SIST EN ISO 14456:2017
(Main)Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO 14456:2015)
Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO 14456:2015)
This International Standard gives a list of FTSC (fire potential, i.e. “oxidizing potential and flammability”,
toxicity, state of the gas, and corrosiveness) codes determined according to the relevant properties of
gases and of some liquids that are transported under pressure.
It does not cover gas material compatibility which is covered by ISO 11114 (all parts).
Gasflaschen - Eigenschaften von Gasen und zugehörige Klassifizierungscodes (FTSC) (ISO 14456:2015)
Diese Internationale Norm gibt eine Liste der FTSC-Codes (Brennbarkeit, d. h. „Oxidationsvermögen und Entzündbarkeitsbereich“, Toxizität, Gaszustand und Korrosivität; en: fire potential, i.e. “oxidizing potential and flammability“, toxicity, state of the gas and corrosiveness) gemäß den entsprechenden Eigenschaften von Gasen und einigen Flüssigkeiten, die unter Druck transportiert werden, wieder.
Sie umfasst nicht die Verträglichkeit von Werkstoffen mit Gas, welche durch ISO 11114 (alle Teile) abgedeckt ist.
Bouteilles à gaz - Propriétés des gaz et codes de classification associés (FTSC) (ISO 14456:2015)
L'ISO 14456:2015 fournit une liste de codes FTSC (potentiel incendiaire, c'est-à-dire «potentiel d'oxydation et inflammabilité», toxicité, état du gaz et corrosivité) déterminés en fonction des propriétés correspondantes des gaz et de certains liquides transportés sous pression.
Elle ne traite pas de la compatibilité des matériaux avec les contenus gazeux, qui est traitée par l'ISO 11114 (toutes les parties).
Plinske jeklenke - Lastnosti plina in pripadajoči razvrstitveni razredi (FTSC) (ISO 14456:2015)
Ta mednarodni standard podaja seznam kod FTSC (možnost vžiga, tj. »možnost oksidacije in vnetljivost«, toksičnost, stanje plina in korozivnost), ki so določene glede na ustrezne lastnosti plinov in nekaterih tekočin, ki se prevažajo pod tlakom.
Ne zajema združljivosti kombinacije plina in materiala, ki je zajeta v standardu ISO 11114 (vsi deli).
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 14456:2017
01-maj-2017
3OLQVNHMHNOHQNH/DVWQRVWLSOLQDLQSULSDGDMRþLUD]YUVWLWYHQLUD]UHGL )76& ,62
Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO
14456:2015)
Gasflaschen - Eigenschaften von Gasen und zugehörige Klassifizierungscodes (FTSC)
(ISO 14456:2015)
Bouteilles à gaz - Propriétés des gaz et codes de classification associés (FTSC) (ISO
14456:2015)
Ta slovenski standard je istoveten z: EN ISO 14456:2016
ICS:
23.020.35 Plinske jeklenke Gas cylinders
SIST EN ISO 14456:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 14456:2017
EN ISO 14456
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2016
EUROPÄISCHE NORM
ICS 23.020.30
English Version
Gas cylinders - Gas properties and associated classification
(FTSC) codes (ISO 14456:2015)
Bouteilles à gaz - Propriétés des gaz et codes de Gasflaschen - Eigenschaften von Gasen und zugehörige
classification associés (FTSC) (ISO 14456:2015) Klassifizierungscodes (FTSC) (ISO 14456:2015)
This European Standard was approved by CEN on 2 September 2016.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14456:2016 E
worldwide for CEN national Members.
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EN ISO 14456:2016 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 14456:2017
EN ISO 14456:2016 (E)
European foreword
The text of ISO 14456:2015 has been prepared by Technical Committee ISO/TC 58 “Gas cylinders” of
the International Organization for Standardization (ISO) and has been taken over as EN ISO 14456:2016
by Technical Committee CEN/TC 23 “Transportable gas cylinders” the secretariat of which is held by
BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2017, and conflicting national standards shall
be withdrawn at the latest by March 2017.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 14456:2015 has been approved by CEN as EN ISO 14456:2016 without any modification.
3
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SIST EN ISO 14456:2017
INTERNATIONAL ISO
STANDARD 14456
First edition
2015-09-15
Gas cylinders — Gas properties and
associated classification (FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification
associés (FTSC)
Reference number
ISO 14456:2015(E)
©
ISO 2015
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SIST EN ISO 14456:2017
ISO 14456:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Gas properties . 2
4.1 Numerical gas code (FTSC) . 2
4.1.1 General. 2
4.1.2 Fire potential, category I . 2
4.1.3 Acute toxicity, category II . 3
4.1.4 State of the gas (in the cylinder at 15 °C), category III . 3
4.1.5 Corrosiveness, category IV . 3
5 List of gases and liquids with the corresponding FTSC codes . 4
5.1 Basic principles and single gases . 4
5.2 Assignment of a gas mixture to a group . 4
5.3 Tables of compatible groups of gases and liquids . 5
Bibliography .17
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 58, Gas cylinders, SC 2, Cylinder fittings.
iv © ISO 2015 – All rights reserved
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Introduction
This International Standard establishes a method of allocating a four-digit code number (FTSC) to any
gas, liquids that are transported under pressure or mixture of gases contained in cylinders. This code
number categorizes the gas, liquids that are transported under pressure or gas mixture in terms of its
physical-chemical properties and/or flammability, toxicity, state of the gas, and corrosiveness (see 4.1).
FTSC is the abbreviation of these properties.
The FTSC code enables a gas, liquids that are transported under pressure or gas mixture to be assigned
to one of the 15 “compatible” gas groups.
The FTSC codes and the method for their determination are currently given in ISO 5145:2014, Annex
A for use in the selection of valve outlets. This annex from ISO 5145 will be removed when the present
standard is published.
The properties and the selection criteria are aligned as appropriate with the Globally Harmonized
System for the Classification and Labelling of Chemicals (GHS).
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SIST EN ISO 14456:2017
INTERNATIONAL STANDARD ISO 14456:2015(E)
Gas cylinders — Gas properties and associated
classification (FTSC) codes
1 Scope
This International Standard gives a list of FTSC (fire potential, i.e. “oxidizing potential and flammability”,
toxicity, state of the gas, and corrosiveness) codes determined according to the relevant properties of
gases and of some liquids that are transported under pressure.
It does not cover gas material compatibility which is covered by ISO 11114 (all parts).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 10156, Gases and gas mixtures — Determination of fire potential and oxidizing ability for the selection
of cylinder valve outlets
ISO 10298, Determination of toxicity of a gas or gas mixture
ISO 10286:2015, Gas cylinders — Terminology
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
gas mixture
combination of different single gases deliberately mixed in specified proportions
[SOURCE: ISO 10286:2015, definition 704]
3.2
liquefied gas
gas, which, when packaged for transport, is partially liquid (or solid) at temperature above −50 °C
[SOURCE: ISO 10286:2015, definition 706]
3.3
compressed gas
gas, which, when packaged under pressure for transport, is entirely gaseous at −50 °C
Note 1 to entry: This category includes all gases with a critical temperature less than or equal to −50 °C.
[SOURCE: ISO 10286:2015, definition 705]
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3.4
lethal concentration 50
LC
50
concentration of a gas (or a gas mixture) in air administered by a single exposure during a short period
of time (24 h or less) to a group of young adult albino rats (males and females) which leads to the death
of half of the animals in at least 14 d
[SOURCE: ISO 10298:2010, definition 2.1]
4 Gas properties
4.1 Numerical gas code (FTSC)
4.1.1 General
The code number assigned to a gas or liquid is based on the following four physical-chemical properties:
a) Category I (F): fire potential, defining the gas behaviour with respect to combustion;
b) Category II (T): acute toxicity;
c) Category III (S): gas state, defining the physical state of the fluid in the cylinder at 15 °C within a
given pressure range;
d) Category IV (C): corrosiveness (ability to damage or destroy living tissues: eyes, skin, and
mucous membranes).
Each category is subdivided into different characteristics (subdivisions), each identified by a different
digit. In this way, a gas in a given state is characterized by a series of four digits (one digit per category)
as illustrated below.
4.1.2 Fire potential, category I
Subdivision 0: inert (any gas not classified under subdivisions 1 to 5 below);
Subdivision 1: supports combustion (gas having an oxidizing power equal to or less than a mixture
containing 23,5 % of oxygen in nitrogen);
Subdivision 2: flammable (gas having flammability limits in air);
NOTE 1 See ISO 10156 for more information.
Subdivision 3: pyrophoric (spontaneously flammable);
Subdivision 4: oxidizing (gas having an oxidizing power greater than a mixture containing 23,5 % O in
2
N );
2
NOTE 2 See ISO 10156 for more information.
Subdivision 5: chemically unstable (flammable and subject to rapid decomposition or polymerization).
NOTE 3 When considering the properties of gases from subdivisions 1 and 4, the following applies:
a) Subdivision 4 considers the risk of accelerating combustion more than air does;
b) For gas material compatibility with gases under pressure of subdivisions 1 and 4, it is considered that the
risk of ignition exists when the oxygen partial pressure is more than 30 bar;
c) For valves outlet selection (for example, see ISO 5145), the risk is to mix a flammable gas (subdivision 2
and/or 3) with a gas of subdivision 1 and/or 4.
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4.1.3 Acute toxicity, category II
Subdivision 0: supporting human life;
Subdivision 1: non-toxic LC > 0,5 % by volume (5 000 ppm);
50 rat 1h
Subdivision 2: toxic; 0,02 % by volume (200 ppm) < LC ≤ 0,5 % by volume (5 000 ppm);
50 rat 1h
Subdivision 3: very toxic LC < 0,02 % by volume (200 ppm).
50 rat 1h
NOTE See ISO 10298 for more information.
4.1.4 State of the gas (in the cylinder at 15 °C), category III
All pressures for compressed gases are working pressures according to the definition given in ISO 10286.
For liquefied gases, this is the developed pressure at 65 °C (normally equal to the cylinder test pressure).
Subdivision 0: liquefied gas of 35 bar or less;
Subdivision 1: liquefied gas at a pressure greater than 35 bar;
Subdivision 2: liquid withdrawal – liquefied gas (optional);
Subdivision 3: dissolved gas;
Subdivision 4: gas phase withdrawal at 35 bar or less;
Subdivision 5: compressed gas between 35 bar and 250 bar (Europe);
Subdivision 6: compressed gas between 35 bar and 207 bar (North America);
Subdivision 7: compressed gas above 207 bar (North America) or 250 bar (Europe).
NOTE 1 Subdivisions 5 and 6 have been adopted as a result of a compromise between the European and the
North American approach. The European preference for a limit of 250 bar reflects the current tendency towards
higher pressure applications. The current North American practice requires a limit of 207 bar for which their
pressure reducing valves are designed. This is the working pressure at the referenced temperature of 15 °C.
Therefore, three pressure classes have been retained. Other jurisdictions might use different values.
Either subdivision 5 or subdivision 6 shall be used, never both. The selection of either subdivision will
determine the applicable pressure for subdivision 7.
Subdivision 5 or 6: medium pressure range, each user being required to select one subdivision
exclusively to determine the upper limit of the medium pressure range (i.e. 182 bar or 250 bar).
Subdivision 7: high pressure range, the lower limit (182 bar or 250 bar) of which depends on the
subdivision selected for the medium pressure range.
After the introduction of subdivisions 5, 6, and 7, a number of pressure ranges have been (or are being)
established to make the selection of the proper cylinder valve outlet connection (e.g. 500 bar, 800 bar,
sub atmospheric pressure. These ranges have been chosen to protect downstream regulators and other
ancillary equipment from over-pressurized conditions. Consequently, for the tables in 5.3, the third
digit (S) used for all compressed gases is “5” to indicate that this is a compressed gas.
NOTE 2 Subdivisions 8 and 9 have been allocated for liquid withdrawal cylinders of cryogenic gases in the USA.
4.1.5 Corrosiveness, category IV
Subdivision 0: non-corrosive;
Subdivision 1: non-halogen acid forming;
Subdivision 2: basic;
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Subdivision 3: halogen acid forming.
NOTE See ISO 13338 for more information.
5 List of gases and liquids with the corresponding FTSC codes
5.1 Basic principles and single gases
The FTSC code enables the assignment of any gas (including gas mixtures) or any liquid to be packaged
under pressure one of the 15 “compatible” gas groups listed in the table below.
NOTE Attention is drawn to the fact that the only purpose of the numerical code is to group compatible
gases together in order that particular valve outlets might be assigned to each group. Use of the code is limited
only to the assignment of valve outlets.
Table 1 — Characteristics of groups
Group Characteristics
1 Non-flammable, non-toxic gases and qualifying gas mixtures, less stable thermally than group 3
b
2 Carbon dioxide
Non-flammable, non-toxic, and thermally stable gases (except carbon dioxide) and qualifying gas
3
mixtures
4 Non-flammable, toxic, and corrosive (or corrosive by hydrolysis) gases and qualifying gas mixtures
b
5 Air
6 Flammable and non-toxic gases and qualifying gas mixtures
7 Flammable, toxic, and corrosive (basic) gases and qualifying gas mixtures
8 Flammable, toxic, and corrosive (acidic) or non-corrosive gases and qualifying gas mixtures
9 Spontaneously flammable gases and qualifying gas mixtures
b a
10 Oxygen
b
11 Nitrous oxide
12 Oxidant, toxic, and/or corrosive gases and qualifying gas mixtures
13 Flammable gases and qualifying gas mixtures subject to decomposition or polymerization
b
14 Acetylene
15 Oxidant, non-toxic, and non-corrosive gas mixtures
a
In ISO 5145, characteristics of group 10 is “oxygen and high pressure oxidant”. Terms and “high pressure oxidant” will
be removed during the next revision of ISO 5145.
b
Groups 2, 5, 10, 11, and 14 only contain one single gas and are assigned to individual named gases from which mixtures
and other gases are excluded.
5.2 Assignment of a gas mixture to a group
For the purposes of this International Standard, a gas mixture is defined as an intentional combination
of two or more gases, which might be either in the gaseous phase or liquefied under pressure when in a
gas cylinder.
NOTE This International Standard does not attempt to identify gas mixtures which can be safely and
satisfactorily prepared; this is the responsibility of the gas manufacturer. It does not describe any methods or
techniques for preparing gas mixtures.
The principle of allocation of a four-digit numerical code (FTSC) to gas mixtures is the same as that for
single gases. The allocation of the FTSC code to a gas mixture, which allows the assignment of this mixture
to one of the group of gases and gas mixtures (see Table 1), depends on the flammability, oxidizing ability,
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toxicity, and corrosiveness of the final mixture. The determination of flammability and oxidizing ability
is given in ISO 10156, that of toxicity in ISO 10298, and that for corrosiveness in ISO 13338.
Mixtures containing spontaneously flammable gases (i.e. pyrophoric gases such as silane in Table 10)
shall be considered as spontaneously flammable gas mixtures if the content of the pyrophoric gas(es) is
more than 1 % (by volume).
NOTE Tables 2 to 15 are based on, but have been expanded, from ISO 5145. These tables will be removed
when this International Standard has been published and ISO 5145 will be revised.
Table 16 gives the complete list of gases in alphabetical order.
5.3 Tables of compatible groups of gases and liquids
Table 2 — Gases and gas/liquid mixtures belonging to group 1 (non-flammable, non-toxic gases
and gas mixtures, less stable thermally than group 3)
Gas FTSC code Synonym CAS Number
Bromochlorodifluoromethane 0100 R12B 1 353–59–3
a
Bromochloromethane 0100 Halon 1011 74–97–5
Bromotrifluoromethane 0100 Trifluorobromomethane R13B1 75–63–8
Chlorodifluoromethane 0100 Monochlorodifluoromethane R22 75–46–6
Chlorodifluoromethane and azeotropic mixture
0100 R502
Chloropentafluoroethane
a
Chloroheptafluorocyclobutane 0100 C317 377–41–3
Monochloropentafluoroethane 76–15–3
Chloropentafluoroethane 0100
R115
1-Chloro-1,2,2,2-tetrafluoroethane 0100 R124 28–37–89–0
1-Chloro-2,2,2-trifluoroethane 0100 R 133a 75–88–7
Chlorotrifluoromethane 0100 Monochlorotrifluoromethane R1 3 75–72–9
Chlorotrifluoromethane and azeotropic mixture
0100 R503
Trifluoromethane
a
1, 2-Dibromotetrafluoroethane 0100 R114B2 174–73–2
1, 2-Dichlorodifluoroethylene 0100 R1112a 79–35–6
Dichlorodifluoromethane 0100 R12 75–71–8
Dichlorodifluoromethane and azeotropic mixture
0100 R500
1,1-Difluoroethane
Dichlorofluoromethane 0100 R21 75–43–4
a
1,2-Dichlorohexafluorocyclobutane 0100 C316 356–18–3
1,1-Dichlorotetrafluoroethane 0100 R1 14a 374–07–2
1,2-Dichlorotetrafluoroethane 0100 R 114 76–14–2
a
2,2-Dichloro-1,1,1–trifluoro ethane 0100 R 123 306–83–2
Difluoromethane, Pentafluoroethane, zeotropic mixture
0100 R407A, R407B, R407C
and 1,1,1,2-Tetrafluoroethane
Heptafluoropropane 0100 R227 431–89–0
Hexafluoroethane 0100 Perfluoroethane R1 16 76–16–4
Hexafluoropropylene 0100 Hexafluoropropene R 1216 116–15–4
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
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Table 2 (continued)
Gas FTSC code Synonym CAS Number
Octafluorobut-2-ene 0100 R1318 360–89–4
Octafluorocyclobutane 0100 Perfluorocyclobutane RC 318 115–25–3
Octafluoropropane 0100 Perfluoropropane R 218 76–19–7
a
Pentachlorofluoroethane 0100 29756–45–4
Pentafluoroethane 0100 R125 354–33–6
Pentafluoroethane,
1,1,1-Trifluoroethane, and 0100 R404A
1,1,1,2-Tetrafluoroethane zeotropic mixture
a
Pentafluoroethyliodide 0100 354–64–3
Perfluorobutane 0100 R610 355–25–9
Sulfur hexafluoride 0100 2551–62–4
1,1,1,2-Tetrachlorodifluoroethane 76–11–9
0100 R112a
(solid)
a
1,1,2,2-Tetrachlorodifluoroethane 0100 R112 76–12–0
1,1,2,2-Tetrafluoro-1-chloroethane 0100 R124a 354–25–6
1,1,1,2-Tetrafluoroethane 0100 R134a 811–97–2
a
Trichlorofluoromethane 0100 Trichloromonofluoromethane, R11 75–69–4
a
1,1,1-Trichlorotrifluoroethane 0100 R113a 354–58–5
a
1,1,2-Trichlorotrifluoroethane 0100 R113 76–13–1
Trifluoromethane 0100 Fluoroform, R23 75–46–7
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
Table 3 — Gases belonging to group 2 (carbon dioxide)
Gas FTSC code Synonym CAS Number
Carbon dioxide 0110 Carbonic acid anhydride R744 124–38–9
Table 4 — Gases and gas mixtures belonging to group 3 (non-flammable, non-toxic, and
thermally stable gases and gas mixtures)
Gas FTSC code Synonym CAS Number
Argon 0150 7440–37–1
Helium 0150 7440–59–7
Krypton 0150 7439–90–9
Neon 0150 7440–01–9
Nitrogen 0150 7727–37–9
a
Xenon 0110 7440–63–3
Tetrafluoromethane 0150 Carbon tetrafluoride R14 75–73–0
a
FTCS code due to the critical point of the gas of above 15 °C.
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Table 5 — Gases and gas mixtures belonging to group 4 (non-flammable, toxic, and corrosive
(or corrosive by hydrolysis) gases and gas mixtures)
Gas FTSC code Synonym CAS Number
a
Antimony pentafluoride 0303 7783–70–2
Boron trichloride 0203 Boron chloride 10294–34–5
Boron trifluoride 0253 Boron fluoride 7637–07–2
a b
Bromoacetone (0303)-2203 598–31–2
Carbonyl-fluoride 0213 353–50–4
Cyanogen chloride 0303 506–77–4
Deuterium chloride 0213 7698–05–7
Deuterium fluoride 0203 14333–26–7
a
Dibromodifluoromethane 0100 R12B2 75–61–6
a
Dichloro-2-chlorovinyl arsine 0303 Lewisite 541–25–3
a
Diphosgene 0303 503–38–8
a
Ethyldichloroarsine 0303 598–14–1
1,1,1,3,3,3,-hexafluoro-2-pro- 684–16–2
Hexafluoroacetone 0203
panone
Hydrogen bromide 0203 Hydrobromic acid (anhydrous) 10035–10–6
Hydrogen chloride 0213 Hydrochloric acid (anhydrous) 7647–01–0
a
Hydrogen fluoride 0203 Hydrofluoric acid (anhydrous) 7664–39–3
Hydrogen iodide 0203 Hydroiodic acid (anhydrous) 10034–85–2
b
Iodotrifluoromethane (0200)-0100 Trifluoromethyl iodide 2314–97–8
b
Methyl bromide (0300)-2200 Bromomethane 74–83–9
a
Methyldichloroarsine 0303 593–89–5
Nitrosyl chloride 0303 2696–92–6
(0200)- Octafluorobutene; R1318 360–89–4
Perfluoro-2-butene
b
0100
a b
Phenylcarbylamine Chloride (0303)-2303 622–44–6
Phosgene 0303 Carbonyl chloride 75–44–5
Phosphorus pentafluoride 0203 7647–19–0
Phosphorus trifluoride 0203 7783–55–3
a
Silicon tetrachloride 0203 10026–04–7
Silicon tetrafluoride 0253 Tetrafluorosilane R764 7783–61–1
Sulfur dioxide 0201 7446–09–5
Sulfur tetrafluoride 0303 7783–60–0
Sulfuryl fluoride 0300 Sulfuryl difluoride 2699–79–8
Tungsten hexafluoride 0203 7783–82–6
Uranium hexafluoride (liquid/solid, class 7) 0303 7783–81–5
The FTSC codes in brackets are from the first version of ISO 5145 (1990). This explains why the corresponding
gases are in this table.
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in
non-pressurized containers. They are included in this grouping because valve outlets are necessary when these
products are supplied together with a propellant in a pressurized container.
b
To be consistent with ISO 10298, the former FTSC code is completed by the new one in bold figures cor-
responding to the new toxicity level.
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SIST EN ISO 14456:2017
ISO 14456:2015(E)
Table 6 — Gases belonging to group 5 (air)
Gas FTSC code Synonym CAS Number
Air 1050 132259
...
SLOVENSKI STANDARD
oSIST prEN ISO 14456:2016
01-maj-2016
3OLQVNHMHNOHQNH/DVWQRVWLSOLQDLQSULSDGDMRþLUD]YUVWLWYHQLUD]UHGL )76& ,62
Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO
14456:2015)
Gasflaschen - Eigenschaften von Gasen und zugehörige Klassifizierungscodes (FTSC)
(ISO 14456:2015)
Bouteilles à gaz - Propriétés des gaz et codes de classification associés (FTSC) (ISO
14456:2015)
Ta slovenski standard je istoveten z: prEN ISO 14456
ICS:
23.020.35 Plinske jeklenke Gas cylinders
oSIST prEN ISO 14456:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 14456:2016
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oSIST prEN ISO 14456:2016
INTERNATIONAL ISO
STANDARD 14456
First edition
2015-09-15
Gas cylinders — Gas properties and
associated classification (FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification
associés (FTSC)
Reference number
ISO 14456:2015(E)
©
ISO 2015
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oSIST prEN ISO 14456:2016
ISO 14456:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved
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Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Gas properties . 2
4.1 Numerical gas code (FTSC) . 2
4.1.1 General. 2
4.1.2 Fire potential, category I . 2
4.1.3 Acute toxicity, category II . 3
4.1.4 State of the gas (in the cylinder at 15 °C), category III . 3
4.1.5 Corrosiveness, category IV . 3
5 List of gases and liquids with the corresponding FTSC codes . 4
5.1 Basic principles and single gases . 4
5.2 Assignment of a gas mixture to a group . 4
5.3 Tables of compatible groups of gases and liquids . 5
Bibliography .17
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Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT), see the following URL: Foreword — Supplementary information.
The committee responsible for this document is ISO/TC 58, Gas cylinders, SC 2, Cylinder fittings.
iv © ISO 2015 – All rights reserved
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Introduction
This International Standard establishes a method of allocating a four-digit code number (FTSC) to any
gas, liquids that are transported under pressure or mixture of gases contained in cylinders. This code
number categorizes the gas, liquids that are transported under pressure or gas mixture in terms of its
physical-chemical properties and/or flammability, toxicity, state of the gas, and corrosiveness (see 4.1).
FTSC is the abbreviation of these properties.
The FTSC code enables a gas, liquids that are transported under pressure or gas mixture to be assigned
to one of the 15 “compatible” gas groups.
The FTSC codes and the method for their determination are currently given in ISO 5145:2014, Annex
A for use in the selection of valve outlets. This annex from ISO 5145 will be removed when the present
standard is published.
The properties and the selection criteria are aligned as appropriate with the Globally Harmonized
System for the Classification and Labelling of Chemicals (GHS).
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INTERNATIONAL STANDARD ISO 14456:2015(E)
Gas cylinders — Gas properties and associated
classification (FTSC) codes
1 Scope
This International Standard gives a list of FTSC (fire potential, i.e. “oxidizing potential and flammability”,
toxicity, state of the gas, and corrosiveness) codes determined according to the relevant properties of
gases and of some liquids that are transported under pressure.
It does not cover gas material compatibility which is covered by ISO 11114 (all parts).
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 10156, Gases and gas mixtures — Determination of fire potential and oxidizing ability for the selection
of cylinder valve outlets
ISO 10298, Determination of toxicity of a gas or gas mixture
ISO 10286:2015, Gas cylinders — Terminology
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
gas mixture
combination of different single gases deliberately mixed in specified proportions
[SOURCE: ISO 10286:2015, definition 704]
3.2
liquefied gas
gas, which, when packaged for transport, is partially liquid (or solid) at temperature above −50 °C
[SOURCE: ISO 10286:2015, definition 706]
3.3
compressed gas
gas, which, when packaged under pressure for transport, is entirely gaseous at −50 °C
Note 1 to entry: This category includes all gases with a critical temperature less than or equal to −50 °C.
[SOURCE: ISO 10286:2015, definition 705]
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3.4
lethal concentration 50
LC
50
concentration of a gas (or a gas mixture) in air administered by a single exposure during a short period
of time (24 h or less) to a group of young adult albino rats (males and females) which leads to the death
of half of the animals in at least 14 d
[SOURCE: ISO 10298:2010, definition 2.1]
4 Gas properties
4.1 Numerical gas code (FTSC)
4.1.1 General
The code number assigned to a gas or liquid is based on the following four physical-chemical properties:
a) Category I (F): fire potential, defining the gas behaviour with respect to combustion;
b) Category II (T): acute toxicity;
c) Category III (S): gas state, defining the physical state of the fluid in the cylinder at 15 °C within a
given pressure range;
d) Category IV (C): corrosiveness (ability to damage or destroy living tissues: eyes, skin, and
mucous membranes).
Each category is subdivided into different characteristics (subdivisions), each identified by a different
digit. In this way, a gas in a given state is characterized by a series of four digits (one digit per category)
as illustrated below.
4.1.2 Fire potential, category I
Subdivision 0: inert (any gas not classified under subdivisions 1 to 5 below);
Subdivision 1: supports combustion (gas having an oxidizing power equal to or less than a mixture
containing 23,5 % of oxygen in nitrogen);
Subdivision 2: flammable (gas having flammability limits in air);
NOTE 1 See ISO 10156 for more information.
Subdivision 3: pyrophoric (spontaneously flammable);
Subdivision 4: oxidizing (gas having an oxidizing power greater than a mixture containing 23,5 % O in
2
N );
2
NOTE 2 See ISO 10156 for more information.
Subdivision 5: chemically unstable (flammable and subject to rapid decomposition or polymerization).
NOTE 3 When considering the properties of gases from subdivisions 1 and 4, the following applies:
a) Subdivision 4 considers the risk of accelerating combustion more than air does;
b) For gas material compatibility with gases under pressure of subdivisions 1 and 4, it is considered that the
risk of ignition exists when the oxygen partial pressure is more than 30 bar;
c) For valves outlet selection (for example, see ISO 5145), the risk is to mix a flammable gas (subdivision 2
and/or 3) with a gas of subdivision 1 and/or 4.
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4.1.3 Acute toxicity, category II
Subdivision 0: supporting human life;
Subdivision 1: non-toxic LC > 0,5 % by volume (5 000 ppm);
50 rat 1h
Subdivision 2: toxic; 0,02 % by volume (200 ppm) < LC ≤ 0,5 % by volume (5 000 ppm);
50 rat 1h
Subdivision 3: very toxic LC < 0,02 % by volume (200 ppm).
50 rat 1h
NOTE See ISO 10298 for more information.
4.1.4 State of the gas (in the cylinder at 15 °C), category III
All pressures for compressed gases are working pressures according to the definition given in ISO 10286.
For liquefied gases, this is the developed pressure at 65 °C (normally equal to the cylinder test pressure).
Subdivision 0: liquefied gas of 35 bar or less;
Subdivision 1: liquefied gas at a pressure greater than 35 bar;
Subdivision 2: liquid withdrawal – liquefied gas (optional);
Subdivision 3: dissolved gas;
Subdivision 4: gas phase withdrawal at 35 bar or less;
Subdivision 5: compressed gas between 35 bar and 250 bar (Europe);
Subdivision 6: compressed gas between 35 bar and 207 bar (North America);
Subdivision 7: compressed gas above 207 bar (North America) or 250 bar (Europe).
NOTE 1 Subdivisions 5 and 6 have been adopted as a result of a compromise between the European and the
North American approach. The European preference for a limit of 250 bar reflects the current tendency towards
higher pressure applications. The current North American practice requires a limit of 207 bar for which their
pressure reducing valves are designed. This is the working pressure at the referenced temperature of 15 °C.
Therefore, three pressure classes have been retained. Other jurisdictions might use different values.
Either subdivision 5 or subdivision 6 shall be used, never both. The selection of either subdivision will
determine the applicable pressure for subdivision 7.
Subdivision 5 or 6: medium pressure range, each user being required to select one subdivision
exclusively to determine the upper limit of the medium pressure range (i.e. 182 bar or 250 bar).
Subdivision 7: high pressure range, the lower limit (182 bar or 250 bar) of which depends on the
subdivision selected for the medium pressure range.
After the introduction of subdivisions 5, 6, and 7, a number of pressure ranges have been (or are being)
established to make the selection of the proper cylinder valve outlet connection (e.g. 500 bar, 800 bar,
sub atmospheric pressure. These ranges have been chosen to protect downstream regulators and other
ancillary equipment from over-pressurized conditions. Consequently, for the tables in 5.3, the third
digit (S) used for all compressed gases is “5” to indicate that this is a compressed gas.
NOTE 2 Subdivisions 8 and 9 have been allocated for liquid withdrawal cylinders of cryogenic gases in the USA.
4.1.5 Corrosiveness, category IV
Subdivision 0: non-corrosive;
Subdivision 1: non-halogen acid forming;
Subdivision 2: basic;
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Subdivision 3: halogen acid forming.
NOTE See ISO 13338 for more information.
5 List of gases and liquids with the corresponding FTSC codes
5.1 Basic principles and single gases
The FTSC code enables the assignment of any gas (including gas mixtures) or any liquid to be packaged
under pressure one of the 15 “compatible” gas groups listed in the table below.
NOTE Attention is drawn to the fact that the only purpose of the numerical code is to group compatible
gases together in order that particular valve outlets might be assigned to each group. Use of the code is limited
only to the assignment of valve outlets.
Table 1 — Characteristics of groups
Group Characteristics
1 Non-flammable, non-toxic gases and qualifying gas mixtures, less stable thermally than group 3
b
2 Carbon dioxide
Non-flammable, non-toxic, and thermally stable gases (except carbon dioxide) and qualifying gas
3
mixtures
4 Non-flammable, toxic, and corrosive (or corrosive by hydrolysis) gases and qualifying gas mixtures
b
5 Air
6 Flammable and non-toxic gases and qualifying gas mixtures
7 Flammable, toxic, and corrosive (basic) gases and qualifying gas mixtures
8 Flammable, toxic, and corrosive (acidic) or non-corrosive gases and qualifying gas mixtures
9 Spontaneously flammable gases and qualifying gas mixtures
b a
10 Oxygen
b
11 Nitrous oxide
12 Oxidant, toxic, and/or corrosive gases and qualifying gas mixtures
13 Flammable gases and qualifying gas mixtures subject to decomposition or polymerization
b
14 Acetylene
15 Oxidant, non-toxic, and non-corrosive gas mixtures
a
In ISO 5145, characteristics of group 10 is “oxygen and high pressure oxidant”. Terms and “high pressure oxidant” will
be removed during the next revision of ISO 5145.
b
Groups 2, 5, 10, 11, and 14 only contain one single gas and are assigned to individual named gases from which mixtures
and other gases are excluded.
5.2 Assignment of a gas mixture to a group
For the purposes of this International Standard, a gas mixture is defined as an intentional combination
of two or more gases, which might be either in the gaseous phase or liquefied under pressure when in a
gas cylinder.
NOTE This International Standard does not attempt to identify gas mixtures which can be safely and
satisfactorily prepared; this is the responsibility of the gas manufacturer. It does not describe any methods or
techniques for preparing gas mixtures.
The principle of allocation of a four-digit numerical code (FTSC) to gas mixtures is the same as that for
single gases. The allocation of the FTSC code to a gas mixture, which allows the assignment of this mixture
to one of the group of gases and gas mixtures (see Table 1), depends on the flammability, oxidizing ability,
4 © ISO 2015 – All rights reserved
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toxicity, and corrosiveness of the final mixture. The determination of flammability and oxidizing ability
is given in ISO 10156, that of toxicity in ISO 10298, and that for corrosiveness in ISO 13338.
Mixtures containing spontaneously flammable gases (i.e. pyrophoric gases such as silane in Table 10)
shall be considered as spontaneously flammable gas mixtures if the content of the pyrophoric gas(es) is
more than 1 % (by volume).
NOTE Tables 2 to 15 are based on, but have been expanded, from ISO 5145. These tables will be removed
when this International Standard has been published and ISO 5145 will be revised.
Table 16 gives the complete list of gases in alphabetical order.
5.3 Tables of compatible groups of gases and liquids
Table 2 — Gases and gas/liquid mixtures belonging to group 1 (non-flammable, non-toxic gases
and gas mixtures, less stable thermally than group 3)
Gas FTSC code Synonym CAS Number
Bromochlorodifluoromethane 0100 R12B 1 353–59–3
a
Bromochloromethane 0100 Halon 1011 74–97–5
Bromotrifluoromethane 0100 Trifluorobromomethane R13B1 75–63–8
Chlorodifluoromethane 0100 Monochlorodifluoromethane R22 75–46–6
Chlorodifluoromethane and azeotropic mixture
0100 R502
Chloropentafluoroethane
a
Chloroheptafluorocyclobutane 0100 C317 377–41–3
Monochloropentafluoroethane 76–15–3
Chloropentafluoroethane 0100
R115
1-Chloro-1,2,2,2-tetrafluoroethane 0100 R124 28–37–89–0
1-Chloro-2,2,2-trifluoroethane 0100 R 133a 75–88–7
Chlorotrifluoromethane 0100 Monochlorotrifluoromethane R1 3 75–72–9
Chlorotrifluoromethane and azeotropic mixture
0100 R503
Trifluoromethane
a
1, 2-Dibromotetrafluoroethane 0100 R114B2 174–73–2
1, 2-Dichlorodifluoroethylene 0100 R1112a 79–35–6
Dichlorodifluoromethane 0100 R12 75–71–8
Dichlorodifluoromethane and azeotropic mixture
0100 R500
1,1-Difluoroethane
Dichlorofluoromethane 0100 R21 75–43–4
a
1,2-Dichlorohexafluorocyclobutane 0100 C316 356–18–3
1,1-Dichlorotetrafluoroethane 0100 R1 14a 374–07–2
1,2-Dichlorotetrafluoroethane 0100 R 114 76–14–2
a
2,2-Dichloro-1,1,1–trifluoro ethane 0100 R 123 306–83–2
Difluoromethane, Pentafluoroethane, zeotropic mixture
0100 R407A, R407B, R407C
and 1,1,1,2-Tetrafluoroethane
Heptafluoropropane 0100 R227 431–89–0
Hexafluoroethane 0100 Perfluoroethane R1 16 76–16–4
Hexafluoropropylene 0100 Hexafluoropropene R 1216 116–15–4
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
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Table 2 (continued)
Gas FTSC code Synonym CAS Number
Octafluorobut-2-ene 0100 R1318 360–89–4
Octafluorocyclobutane 0100 Perfluorocyclobutane RC 318 115–25–3
Octafluoropropane 0100 Perfluoropropane R 218 76–19–7
a
Pentachlorofluoroethane 0100 29756–45–4
Pentafluoroethane 0100 R125 354–33–6
Pentafluoroethane,
1,1,1-Trifluoroethane, and 0100 R404A
1,1,1,2-Tetrafluoroethane zeotropic mixture
a
Pentafluoroethyliodide 0100 354–64–3
Perfluorobutane 0100 R610 355–25–9
Sulfur hexafluoride 0100 2551–62–4
1,1,1,2-Tetrachlorodifluoroethane 76–11–9
0100 R112a
(solid)
a
1,1,2,2-Tetrachlorodifluoroethane 0100 R112 76–12–0
1,1,2,2-Tetrafluoro-1-chloroethane 0100 R124a 354–25–6
1,1,1,2-Tetrafluoroethane 0100 R134a 811–97–2
a
Trichlorofluoromethane 0100 Trichloromonofluoromethane, R11 75–69–4
a
1,1,1-Trichlorotrifluoroethane 0100 R113a 354–58–5
a
1,1,2-Trichlorotrifluoroethane 0100 R113 76–13–1
Trifluoromethane 0100 Fluoroform, R23 75–46–7
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
Table 3 — Gases belonging to group 2 (carbon dioxide)
Gas FTSC code Synonym CAS Number
Carbon dioxide 0110 Carbonic acid anhydride R744 124–38–9
Table 4 — Gases and gas mixtures belonging to group 3 (non-flammable, non-toxic, and
thermally stable gases and gas mixtures)
Gas FTSC code Synonym CAS Number
Argon 0150 7440–37–1
Helium 0150 7440–59–7
Krypton 0150 7439–90–9
Neon 0150 7440–01–9
Nitrogen 0150 7727–37–9
a
Xenon 0110 7440–63–3
Tetrafluoromethane 0150 Carbon tetrafluoride R14 75–73–0
a
FTCS code due to the critical point of the gas of above 15 °C.
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Table 5 — Gases and gas mixtures belonging to group 4 (non-flammable, toxic, and corrosive
(or corrosive by hydrolysis) gases and gas mixtures)
Gas FTSC code Synonym CAS Number
a
Antimony pentafluoride 0303 7783–70–2
Boron trichloride 0203 Boron chloride 10294–34–5
Boron trifluoride 0253 Boron fluoride 7637–07–2
a b
Bromoacetone (0303)-2203 598–31–2
Carbonyl-fluoride 0213 353–50–4
Cyanogen chloride 0303 506–77–4
Deuterium chloride 0213 7698–05–7
Deuterium fluoride 0203 14333–26–7
a
Dibromodifluoromethane 0100 R12B2 75–61–6
a
Dichloro-2-chlorovinyl arsine 0303 Lewisite 541–25–3
a
Diphosgene 0303 503–38–8
a
Ethyldichloroarsine 0303 598–14–1
1,1,1,3,3,3,-hexafluoro-2-pro- 684–16–2
Hexafluoroacetone 0203
panone
Hydrogen bromide 0203 Hydrobromic acid (anhydrous) 10035–10–6
Hydrogen chloride 0213 Hydrochloric acid (anhydrous) 7647–01–0
a
Hydrogen fluoride 0203 Hydrofluoric acid (anhydrous) 7664–39–3
Hydrogen iodide 0203 Hydroiodic acid (anhydrous) 10034–85–2
b
Iodotrifluoromethane (0200)-0100 Trifluoromethyl iodide 2314–97–8
b
Methyl bromide (0300)-2200 Bromomethane 74–83–9
a
Methyldichloroarsine 0303 593–89–5
Nitrosyl chloride 0303 2696–92–6
(0200)- Octafluorobutene; R1318 360–89–4
Perfluoro-2-butene
b
0100
a b
Phenylcarbylamine Chloride (0303)-2303 622–44–6
Phosgene 0303 Carbonyl chloride 75–44–5
Phosphorus pentafluoride 0203 7647–19–0
Phosphorus trifluoride 0203 7783–55–3
a
Silicon tetrachloride 0203 10026–04–7
Silicon tetrafluoride 0253 Tetrafluorosilane R764 7783–61–1
Sulfur dioxide 0201 7446–09–5
Sulfur tetrafluoride 0303 7783–60–0
Sulfuryl fluoride 0300 Sulfuryl difluoride 2699–79–8
Tungsten hexafluoride 0203 7783–82–6
Uranium hexafluoride (liquid/solid, class 7) 0303 7783–81–5
The FTSC codes in brackets are from the first version of ISO 5145 (1990). This explains why the corresponding
gases are in this table.
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in
non-pressurized containers. They are included in this grouping because valve outlets are necessary when these
products are supplied together with a propellant in a pressurized container.
b
To be consistent with ISO 10298, the former FTSC code is completed by the new one in bold figures cor-
responding to the new toxicity level.
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Table 6 — Gases belonging to group 5 (air)
Gas FTSC code Synonym CAS Number
Air 1050 132259–10–0
Table 7 — Gases and gas mixtures belonging to group 6 (flammable and non-toxic gases and
gas mixtures)
Gas FTSC code Synonym CAS Number
Allene 2100 Propadiene 463–49–0
Bromotrifluoro ethylene 2100 R113B1 589–73–2
Butane 2100 106–97–8
1-Butene 2100 Butylene 106–98–9
Cis-2-Butene 2100 Butylene 590–18–1
Trans-2-Butene 2100 Butylene 624–64–6
1-Chloro-1,1-difluoroethane 2100 R142b 75–68–3
Chlorofluoromethane 2100 R31 593–70–4
Deuterium 2150 7782–39–0
2100 75–37–6
1,1-Difluoroethane Ethylidene fluoride R 152a
2110
2100 75–10–5
Difluoromethane Methylene fluoride R 32
2110
1,1-Difluoroethylene 2110 Vinylidene fluoride R1 132a 75–38–7
Dimethylether 2100 Methyl ether 115–10–6
a
2,2-Dimethylpropane 2100 Tetramethylmethane 463–82–1
Ethane 2110 R170 74–84–0
Ethylacetylene 2100 1-Butyne 107–00–6
a
Ethylchloride 2100 Chloroethane R160 75–00–3
Ethylfluoride 2100 R161 95508–16–0
Ethylene 2150 Ethene 74–85–1
a
Ethyl ether 2100 R1150 60–29–7
Hydrogen 2150 1333–74–0
Isobutane 2100 Trimethylmethane R601 75–28–5
Isobutylene 2100 2-Methylpropene; Isobutene 115–11–7
Methane 2150 R50 74–82–8
Methylacetylene 2100 Allylene; Propyne 74–99–7
a
3-Methyl-1-butene 2100 Isoamylene:Isopropylethylene 563–45–1
Methyl ethyl ether 2100 Ethyl methyl ether 540–67–0
Methyl fluoride 2110 Fluoromethane R41 593–53–3
Natural gas 2150 mixture
Propane 2100 R290 74–98–6
Propylene 2100 Propene R1270 115–07–1
2,2,2,3-Tetrafluoropropene 2100 R1234yf 754–12–1
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
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Table 7 (continued)
Gas FTSC code Synonym CAS Number
1,1,1-Trifluoroethane 2100 R1 43a 420–46–2
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
Table 8 — Gases and gas mixtures belonging to group 7 (flammable, toxic, and corrosive (basic)
gases and gas mixtures)
Gas FTSC code Synonym CAS Number
Ammonia 2102 R717 7664–41–7
Dimethylamine 2102 124–40–3
a
Monoethylamine 2102 Ethylamine R631 75–04–7
Monomethylamine 2102 Methylamine R630 74–89–5
Trimethylamine 2102 75–5-3
a
Some products, being liquid at normal ambient conditions, are included since they might be supplied in non-pressurized
containers. They are included in this grouping because valve outlets are necessary when these products are supplied
together with a propellant in a pressurized container.
Table 9 — Gases and gas mixtures belonging to group 8 (flammable, toxic, and corrosive (acidic)
or non-corrosive gases and gas mixtures)
Gas FTSC code Synonym CAS Number
Arsine 2300 7784–42–1
Carbon monoxide 2250 630–08–0
Carbonyl sulfide 2201 Carbonoxylsulfide 463–58–1
b
Chloromethane (2200)-2100 Methyl chloride R40 74–87–3
Cyanogen 2200 460–19–5
b
Cyclopropane (2200)-2100 Trimethylene 75–19–4
Deuterium selenide 2301 13536–95–3
Deuterium sulfide 2201 13536–94–2
Dichlorosilane 2203 4109–96–0
b
Dimethylsilane (2300)-2100 1111–74–6
b
Fluoroethane (2300)-2100 Ethyl fluoride R161 353–36–6
Germane 2200 7782–65–2
a
Heptafluorobutyronitrile 2300 375–00–8
Hexafluorocyclobutene 2100 697–11–0
Hyrogen selenide 2301 7783–07–5
Hydrogen sulfide 2201 7783–06–4
Methyl mercaptan 2201 Methanethiol 74–93–1
b
Methylsilane (2300)-2100 992–94–9
a
Nickel carbonyl 2300 Nickel tetracarbonyl 13463–39–3
Pentafluoropropionitrile 2300 422–04–8
a
Tetraethyl lead 2300 78–00–2
a
Tetramethyl lead 2200 75–74–1
Trifluo
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