oSIST prEN ISO 14456:2023
(Main)Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO/DIS 14456:2023)
Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO/DIS 14456:2023)
ISO 14456:2015 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.
Gasflaschen - Eigenschaften von Gasen und zugehörige Klassifizierungscodes (FTSC) (ISO/DIS 14456:2023)
Bouteilles à gaz - Propriétés des gaz et codes de classification associés (FTSC) (ISO/DIS 14456:2023)
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/DIS 14456:2023)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 14456:2023
01-marec-2023
Plinske jeklenke - Lastnosti plina in pripadajoči razvrstitveni razredi (FTSC)
(ISO/DIS 14456:2023)
Gas cylinders - Gas properties and associated classification (FTSC) codes (ISO/DIS
14456:2023)
Gasflaschen - Eigenschaften von Gasen und zugehörige Klassifizierungscodes (FTSC)
(ISO/DIS 14456:2023)
Bouteilles à gaz - Propriétés des gaz et codes de classification associés (FTSC)
(ISO/DIS 14456:2023)
Ta slovenski standard je istoveten z: prEN ISO 14456 rev
ICS:
23.020.35 Plinske jeklenke Gas cylinders
oSIST prEN ISO 14456:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 14456:2023
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oSIST prEN ISO 14456:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14456
ISO/TC 58/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2023-02-01 2023-04-26
Gas cylinders — Gas properties and associated
classification (FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification associés (FTSC)
ICS: 23.020.35
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
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WHICH REFERENCE MAY BE MADE IN
Reference number
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ISO/DIS 14456:2023(E)
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RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 14456
ISO/TC 58/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
Gas cylinders — Gas properties and associated
classification (FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification associés (FTSC)
ICS: 23.020.35
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
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© ISO 2023
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ii
© ISO 2023 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2022
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
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 . 4
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 . 5
5.3 Tables of compatible groups of gases and liquids . 5
Annex A (informative) Chemical and hazard data related to FTSC entries proposed for
addition to ISO 14456:2015 .19
Bibliography .46
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 58, Gas cylinders , Subcommittee SC 2,
Cylinder valves
This second edition cancels and replaces the first edition (ISO 14456:2015), which has been technically
revised.
The main changes are as follows:
— Corrections to CAS numbers and FTSC codes;
— Consequential revisions as a result of a new edition of ISO 5145:2017; and
— Addition of new FTSC codes for commonly used gases and liquids.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
Introduction
This document establishes a method of allocating a four-digit code number (FTSC) to any gases and
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 gases and liquids that are transported under pressure or gas mixtures to be
assigned to one of the 15 “compatible” gas groups.
The properties and the selection criteria are aligned as appropriate with the Globally Harmonized
System of Classification and Labelling of Chemicals (GHS).
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oSIST prEN ISO 14456:2023
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oSIST prEN ISO 14456:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 14456:2022(E)
Gas cylinders — Gas properties and associated
classification (FTSC) codes
1 Scope
This document gives a list of FTSC (fire potential, i.e. “oxidizing power 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 material compatibility with gases which is covered by ISO 11114 (all parts).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 10156, Gas cylinders — Gases and gas mixtures — Determination of fire potential and oxidizing ability
for the selection of cylinder valve outlets
ISO 10298, Gas cylinders — Gases and gas mixtures — Determination of toxicity for the selection of cylinder
valve outlets
ISO 10286:2021, Gas cylinders — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286:2021 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https:// www .electropedia .org/
— ISO Online browsing platform: available at https:// www .iso .org/ obp
3.1
gas mixture
combination of different single gases and/or liquids deliberately mixed in specified proportions
resulting in a homogeneous gaseous mixture.
[SOURCE: ISO 10286:2021, definition 3.5.2, modified change may be needed later if ISO 10286 definition
changes in future edition]
3.2
liquefied gas
gas, which, when packaged for transport, is partially liquid (or solid) at temperatures above −50 °C
[SOURCE: ISO 10286:2021, definition 3.5.4 change may be needed later if ISO 10286 definition changes
in future edition]
1
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
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 10286:2021, definition 3.5.3 change may be needed later if ISO 10286 definition changes
in future edition]
3.4
lethal concentration 50
LC
50
concentration of a substance in air exposure to which, for a specified length of time, it is expected
tocause the death of 50 % of the entire defined experimental animal population after a defined time
period
3
Note 1 to entry: Lethal concentration is usually measured as ppm (volume fraction) or mg/m .
[SOURCE: ISO 10298:2018, definition 3.1 without Note 1 to entry]
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, i.e. “oxidizing power and flammability”, which defines 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, or the potential for an acid/base chemical reaction).
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 % O2
in N2);
NOTE 2 See ISO 10156 for more information.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
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 valve 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.
4.1.3 Acute toxicity, category II
Subdivision 0: supporting human life;
Subdivision 1: non-toxic LC (1 h) > 0,5 % by volume (5 000 ppm);
50
Subdivision 2: toxic; 0,02 % by volume (200 ppm) < LC (1 h) ≤ 0,5 % by volume (5 000 ppm);
50
Subdivision 3: very toxic LC (1 h) ≤ 0,02 % by volume (200 ppm)
50
NOTE See ISO 10298:2018 for more information. For LC values see Table B.1 of ISO 10298:2018
50
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 and up to 350 bar (North America) or above 250 bar up to
350 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.
Subdivision 7: high pressure range, the lower limit of which depends on the subdivision selected for the
medium pressure range.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
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;
Subdivision 3: halogen acid forming.
NOTE See ISO 13338 for more information. For corrosiveness subdivisions, see Table 1 of ISO 13338:2022.
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 to 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
a
2 Carbon dioxide
3 Non-flammable, non-toxic, and thermally stable gases (except carbon dioxide) and qualifying gas mixtures
4 Non-flammable, toxic, and corrosive (or corrosive by hydrolysis) gases and qualifying gas mixtures
a
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
a
10 Oxygen
a
11 Nitrous oxide
12 Oxidizing, toxic, and/or corrosive gases and qualifying gas mixtures
13 Flammable gases and qualifying gas mixtures subject to decomposition or polymerization
a
14 Acetylene
15 Oxidizing, non-toxic, and non-corrosive gas mixtures
a
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.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
5.2 Assignment of a gas mixture to a group
For the purposes of this document, 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 document 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 power, toxicity, and corrosiveness of the final mixture. The determination of flammability
and oxidizing power 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).
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 75–45–6
Chlorodifluoromethane and Chloro- azeotropic mixture
0100 R502
pentafluoroethane
a
Chloroheptafluorocyclobutane 0100 C317 377–41–3
Chloropentafluoroethane 0100 Monochloropentafluoroethane R115 76–15–3
1-Chloro-1,2,2,2-tetrafluoroethane 0100 R124 2837–89–0
1-Chloro-2,2,2-trifluoroethane 0100 R133a 75–88–7
Chlorotrifluoromethane 0100 Monochlorotrifluoromethane R13 75–72–9
Chlorotrifluoromethane and Trifluo- azeotropic mixture
0100 R503
romethane
a
1,2 - dibromo-1,1-difluoroethane 0100 75-82-1
a
1, 2-Dibromotetrafluoroethane 0100 R114B2 124–73–2
1, 2-Dichlorodifluoroethylene 0100 R1112a 79–35–6
Dichlorodifluoromethane 0100 R12 75–71–8
Dichlorodifluoromethane and 1,1-Dif- azeotropic mixture
0100 R500
luoroethane
Dichlorofluoromethane 0100 R21 75–43–4
a
1,2-Dichlorohexafluorocyclobutane 0100 C316 356–18–3
1,1-Dichlorotetrafluoroethane 0100 R114a 374–07–2
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.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
TTaabblle 2 e 2 ((ccoonnttiinnueuedd))
Gas FTSC code Synonym CAS Number
1,2-Dichlorotetrafluoroethane 0100 R114 76–14–2
a
2,2-Dichloro-1,1,1–trifluoro ethane 0100 R123 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 R116 76–16–4
Hexafluoropropylene 0100 Hexafluoropropene R1216 116–15–4
a
Methylene bromide 0100 Dibromomethane 74-95-3
Octafluorobut-2-ene 0100 R1318 360–89–4
Octafluorocyclobutane 0100 Perfluorocyclobutane RC318 115–25–3
Octafluoropropane 0100 Perfluoropropane R218 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 (solid) 0100 R112a 76–11–9
a
1,1,2,2-Tetrachlorodifluoroethane 0100 R112 76–12–0
a
Tetrachloromethane 0100 Carbon tetrachloride 56-23-5
1,1,2,2-Tetrafluoro-1-chloroethane 0100 R124a 354–25–6
1,1,1,2-Tetrafluoroethane 0100 R134a 811–97–2
a
1,1,2-Trichloroethene 0100 Trichloroethylene 79-01-6
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
a
FTSC code due to the gas having a critical temperature above 15 °C.
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
TTaabblle 4 e 4 ((ccoonnttiinnueuedd))
Gas FTSC code Synonym CAS Number
Nitrogen 0150 7727–37–9
a
Xenon 0110 7440–63–3
Tetrafluoromethane 0150 Carbon tetrafluoride, R14 75–73–0
a
FTSC code due to the gas having a critical temperature above 15 °C.
Table 5 — Gases and gas mixtures belonging to group 4 (non-flammable, toxic, and corrosive
(or corrosive by hydrolysis) gases and gas mixtures)
c
Gas FTSC code Synonym CAS Number
a
Antimony pentafluoride 0303 7783–70–2
Arsenic pentafluoride 0303 7784-36-3
Boron trichloride 0203 Boron chloride 10294–34–5
Boron trifluoride 0253 Boron fluoride 7637–07–2
a b
Bromoacetone (0303)-2203 598–31–2
Bromodifluoromethane 0100 1511-62-2
Carbonylfluoride 0213 Fluorophosgene 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
a
Germanium tetrachloride 0203 Germanium chloride 10038-98-9
Germanium tetrafluoride 0203 Germanium fluoride 7783-58-6
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
a
Methyl iodide 0223 Iodomethane 74-88-4
Nitrosyl chloride 0303 2696–92–6
a
Octafluorocyclopentene 0220 559-40-0
b
Perfluoro-2-butene (0200)- 0100 Octafluorobutene; R1318 360–89–4
a b
Phenylcarbylamine Chloride (0303)-2303 622–44–6
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 corresponding to
the new toxicity level.
c
Some gases with an FTSC code of 0100 are listed in table 5 because they historically have been assigned valve outlet
connections specified for this group, see ISO 5145:2017.
7
© ISO 2022 – All rights reserved
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oSIST prEN ISO 14456:2023
ISO/DIS 14456:2022(E)
TTaabblle 5 e 5 ((ccoonnttiinnueuedd))
c
Gas FTSC code Synonym CAS Number
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 7783–61–1
Sulfur dioxide 0201 R764 7446–09–5
Sulfur tetrafluoride 0303 7783–60–0
Sulfuryl fluoride 0200 Sulfuryl difluoride 2699–79–8
Tungsten hexafluoride 0203 7783–82–6
Uranium hexafluoride (liquid/solid, class 7
...
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