EN ISO 14456:2016

SLOVENSKI STANDARD
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
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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.

Contents Page
European foreword . 3

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.
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
ISO 14456:2015(E)
© 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.
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copyright@iso.org
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ii © ISO 2015 – All rights reserved

ISO 14456:2015(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 . 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
ISO 14456:2015(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 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

ISO 14456:2015(E)
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).
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]
ISO 14456:2015(E)
3.4
lethal concentration 50
LC
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 behavio
...