ISO 14456:2024

Gas cylinders — Gas properties and associated classification (FTSC) codes

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 the ISO 11114 series.

Bouteilles à gaz — Propriétés des gaz et codes de classification associés (FTSC)

Le présent document fournit une liste de codes FTSC (potentiel d’inflammabilité, c’est-à-dire «pouvoir comburant et inflammabilité», toxicité, état du gaz et corrosivité) déterminés en fonction des propriétés correspondantes des gaz et de certains liquides transportés sous pression. Il ne traite pas de la compatibilité des matériaux avec les contenus gazeux, qui est traitée par la série ISO 11114.

General Information

• Status: Published
• Publication Date: 22-Apr-2024
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: ISO/TC 58/SC 2 - Cylinder fittings
• Drafting Committee: ISO/TC 58/SC 2 - Cylinder fittings
• Current Stage: 6060 - International Standard published
• Start Date: 23-Apr-2024
• Due Date: 11-Oct-2024
• Completion Date: 23-Apr-2024

Relations

• Revises: ISO 14456:2015 - Gas cylinders — Gas properties and associated classification (FTSC) codes
• Effective Date: 06-Jun-2022
• Revises: ISO 14456:2015/Amd 1:2019 - Gas cylinders — Gas properties and associated classification (FTSC) codes — Amendment 1
• Effective Date: 06-Jun-2022

Standards Content (Sample)

International
Standard
ISO 14456
Second edition
Gas cylinders — Gas properties and
2024-04
associated classification (FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification
associés (FTSC)
Reference number
ISO 14456:2024(en) © ISO 2024

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ISO 14456:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

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ISO 14456:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Gas properties - Numerical gas code (FTSC) . 2
4.1 General .2
4.2 Fire potential, category I .2
4.3 Acute toxicity, category II .2
4.4 State of the gas (in the cylinder at 15 °C), category III .3
4.5 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
Annex A (informative) Chemical and hazard data related to additional proposed FTSC entries . 19
Bibliography .43

© ISO 2024 – All rights reserved
iii

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ISO 14456:2024(en)
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 b
...

Norme
internationale
ISO 14456
Deuxième édition
Bouteilles à gaz — Propriétés
2024-04
des gaz et codes de classification
associés (FTSC)
Gas cylinders — Gas properties and associated classification
(FTSC) codes
Numéro de référence
ISO 14456:2024(fr) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 14456:2024(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: [phone]
E-mail: [e-mail]
Web: www.iso.org
Publié en Suisse

© ISO 2024 – Tous droits réservés
ii

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ISO 14456:2024(fr)
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Propriétés des gaz - Code numérique d’identification des gaz (FTSC) . 2
4.1 Généralités .2
4.2 Potentiel d’inflammabilité, catégorie I .2
4.3 Toxicité aiguë, catégorie II .3
4.4 État du gaz (dans la bouteille à 15 °C), catégorie III .3
4.5 Corrosivité, catégorie IV .4
5 Liste des gaz et liquides et des codes FTSC correspondants . 4
5.1 Principes de base et gaz purs .4
5.2 Affectation d’un mélange de gaz à un groupe .5
5.3 Tableaux des groupes de gaz et de liquides compatibles .5
Annexe A (informative) Données sur les produits chimiques et leurs dangers relatives aux
entrées FTSC qu’il est proposé d’ajouter .20
Bibliographie .46

© ISO 2024 – Tous droits réservés
iii

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ISO 14456:2024(fr)
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes nationaux
de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est en général
c
...

FINAL DRAFT
International
Standard
ISO/FDIS 14456
ISO/TC 58/SC 2
Gas cylinders — Gas properties and
Secretariat: AFNOR
associated classification (FTSC)
Voting begins on:
codes
2024-01-22
Bouteilles à gaz — Propriétés des gaz et codes de classification
Voting terminates on:
associés (FTSC)
2024-03-18
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 14456:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 14456:2024(en)
International
Standard
ISO/FDIS 14456
ISO/TC 58/SC 2
Gas cylinders — Gas properties and
Secretariat: AFNOR
associated classification (FTSC)
Voting begins on:
codes
Bouteilles à gaz — Propriétés des gaz et codes de classification
Voting terminates on:
associés (FTSC)
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 14456:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO/FDIS 14456:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Gas properties - Numerical gas code (FTSC) . 2
4.1 General .2
4.2 Fire potential, category I .2
4.3 Acute toxicity, category II .2
4.4 State of the gas (in the cylinder at 15 °C), category III .3
4.5 Corrosiveness, category IV .3
5 List of gases and liquids with
...

FINAL DRAFT INTERNATIONAL STANDARD
ISO/FDIS 14456:2023(E)
ISO /TC 58/SC 2/WG 7
Secretariat: AFNOR
Date: 2023-04-182024-01-05

Gas cylinders — Gas properties and associated classification
(FTSC) codes
Bouteilles à gaz — Propriétés des gaz et codes de classification associés (FTSC)
FDIS stage

---------------------- Page: 1 ----------------------
ISO/FDIS 14456:2024(E)
© ISO 20232024
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
© ISO 2024 – All rights reserved

ii

---------------------- Page: 2 ----------------------
ISO/FDIS 14456:2024(E)
Contents
Foreword . v
Introduction . vi
1 Scope .iii
2 Normative references .iii
3 Terms and definitions .iii
4 Gas properties - Numerical gas code (FTSC) . iv
4.1 General . iv
4.2 Fire potential, category I . 1
4.3 Acute toxicity, category II . 1
4.4 State of the gas (in the cylinder at 15 °C), category III . 1
4.5 Corrosiveness, category IV . 2
5 List of gases and liquids with the corresponding FTSC codes . 2
5.1 Basic principles and single gases . 2
5.2 Assignment of a gas mixture to a group . 3
5.3 Tables of compatible groups of gases and liquids . 3
Annex A (informative) Chemical and hazard data related to additional proposed FTSC entries . 20
A.1 Presentation . 20
A.1.1 Format of the information . 20
A.1.2 Major sources of the information in Table A.1 to Table A.32 . 20
A.2 Rationale for introduction of new FTSC codes . 20
Bibliography . 48

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 S
...