Textiles — Determination of total halogens in textile products — Combustion and ion chromatography (C-IC) test method

This document specifies a test method for the determination of adsorbable organic halogens and total organic halogens in textiles by ion chromatography.

Textiles — Détermination des halogènes totaux présents dans les produits textiles — Méthode par combustion et chromatographie ionique (C-CI)

General Information

Status
Not Published
Technical Committee
ISO/TC 38 - Textiles
Drafting Committee
ISO/TC 38 - Textiles
Current Stage
5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
Start Date
28-Jan-2026
Completion Date
28-Jan-2026

Relations

Effective Date
12-Feb-2026
Effective Date
01-Mar-2025

Overview

ISO/FDIS 20999 is an emerging international standard titled "Textiles - Determination of total halogens in textile products - Combustion and ion chromatography (C-IC) test method". Developed by ISO Technical Committee 38 (Textiles), this standard establishes a precise and reliable test method to quantify total halogens-including fluorine, chlorine, bromine, and iodine-in textile products. The method employs combustion followed by ion chromatography (C-IC) to detect and measure halogen presence, which is crucial for assessing chemical safety, regulatory compliance, and quality control in textiles.

Although currently in the draft stage (FDIS) and not yet a full International Standard, ISO/FDIS 20999 aims to unify testing protocols globally, facilitating consistent screening for halogenated substances in fibers, fabrics, coatings, and other textile components.

Key Topics

  • Scope and Applicability
    The method applies to all combustible textile materials including fibers, fabrics, plastic coatings, and wood components found within textile products. It covers the total halogen content without differentiating between organic or inorganic halogens.

  • Test Principle
    Textile samples are combusted in a high-temperature tube (≥1000°C) in the presence of oxygen and water vapor. This pyrohydrolysis process releases halogens as hydrogen halides, which are captured in an absorption solution and subsequently analyzed by ion chromatography to determine halogen concentration.

  • Preparation and Calibration
    Samples are homogenized and cut to uniform sizes. Calibration requires preparing standard stock solutions of halides such as sodium fluoride, sodium chloride, potassium bromide, and potassium iodide. Calibration solutions are diluted from these stocks to ensure accurate quantification across expected halogen ranges.

  • Apparatus Specifications
    The test can be performed using separate combustion and ion chromatography devices or an integrated combustion-ion chromatography system. Precision balances, pipettes, volumetric flasks, and halogen-free membrane filters are essential for accurate sample preparation and analysis.

  • Result Expression and Reliability
    Quantitative results are obtained via a five-point calibration curve. The standard specifies limit of quantification (LOQ) values and discusses reliability factors for reproducibility and accuracy in halogen measurements.

  • Safety Considerations
    Handling highly halogenated textiles requires care as combustion residues can contaminate equipment and pose risks. Protective protocols are emphasized during sample preparation and analysis.

Applications

  • Chemical Safety and Compliance Testing
    Identifying total halogen content supports regulatory compliance by detecting restricted substances such as perfluorinated alkyl substances (PFAS), flame retardants, or biocides used in textiles.

  • Quality Control in Textile Manufacturing
    Accurate measurement of halogen compounds enables manufacturers to monitor additive levels and maintain product safety standards.

  • Environmental and Health Screening
    Since certain halogens in textiles may be harmful to the environment or consumer health, this testing method aids in screening textiles for potentially hazardous chemical content.

  • Research and Development
    Development of new textile treatments, coatings, and fibers may require assessment for halogen incorporation to balance functional properties with safety.

Related Standards

  • ISO 3696: Specifies Grade 1 water quality for analytical laboratory use, essential for preparing solutions and calibrants in halogen testing.

  • ISO/IEC Directives, Part 1 and 2: Provide guidelines for the development, maintenance, and editorial rules of ISO standards, including those related to textiles and chemical testing.

  • Relevant ISO standards in textiles analysis: ISO continues to develop complementary methods for chemical and physical testing of textile products.


ISO/FDIS 20999 offers a standardized, validated approach for the crucial measurement of halogens in textiles using combustion and ion chromatography. It supports global harmonization of textile chemical testing, ensuring more consistent product safety assurances and environmental compliance throughout the textile industry.

Draft

ISO/FDIS 20999 - Textiles — Determination of total halogens in textile products — Combustion and ion chromatography (C-IC) test method Released:14. 01. 2026

English language
11 pages
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Draft

REDLINE ISO/FDIS 20999 - Textiles — Determination of total halogens in textile products — Combustion and ion chromatography (C-IC) test method Released:14. 01. 2026

English language
11 pages
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Draft

ISO/FDIS 20999 - Textiles — Détermination des halogènes totaux présents dans les produits textiles — Méthode par combustion et chromatographie ionique (C-CI) Released:6. 02. 2026

French language
12 pages
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Frequently Asked Questions

ISO/FDIS 20999 is a draft published by the International Organization for Standardization (ISO). Its full title is "Textiles — Determination of total halogens in textile products — Combustion and ion chromatography (C-IC) test method". This standard covers: This document specifies a test method for the determination of adsorbable organic halogens and total organic halogens in textiles by ion chromatography.

This document specifies a test method for the determination of adsorbable organic halogens and total organic halogens in textiles by ion chromatography.

ISO/FDIS 20999 is classified under the following ICS (International Classification for Standards) categories: 59.080.01 - Textiles in general. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO/FDIS 20999 has the following relationships with other standards: It is inter standard links to FprEN ISO 20999, ISO 20080:2019/Amd 1:2021. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

ISO/FDIS 20999 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


FINAL DRAFT
International
Standard
ISO/TC 38
Textiles — Determination
Secretariat: SAC
of total halogens in textile
Voting begins on:
products — Combustion and ion
2026-01-28
chromatography (C-IC) test method
Voting terminates on:
2026-03-25
Textiles — Détermination des halogènes totaux présents dans les
produits textiles — Méthode par combustion et chromatographie
ionique (C-CI)
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
FINAL DRAFT
International
Standard
ISO/TC 38
Textiles — Determination
Secretariat: SAC
of total halogens in textile
Voting begins on:
products — Combustion and ion
chromatography (C-IC) test method
Voting terminates on:
Textiles — Détermination des halogènes totaux présents dans les
produits textiles — Méthode par combustion et chromatographie
ionique (C-CI)
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.
© ISO 2026
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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents and materials . 1
5.2 Halide salts .2
5.3 Standard solutions .2
5.3.1 General .2
5.3.2 Standard stock solutions .2
5.3.3 Standard working solution .2
5.3.4 Calibration solutions .2
5.4 Eluent .3
5.5 Absorption solution . .3
5.6 Oxygen .3
6 Apparatus . 3
7 Preparation of test specimen . 4
8 Procedure . 4
8.1 Combustion by separate combustion device .4
8.2 Determination by separate ion chromatograph (IC) .4
8.3 Determination by combustion device coupled to an ion chromatograph (C-IC) .4
9 Expression of results . 4
9.1 Calculation .4
9.2 Limit of quantification (LOQ) .5
9.3 Reliability of the test method .5
10 Test report . 5
Annex A (informative) Combustion device . 6
Annex B (informative) Ion chromatographic analysis . 9
Annex C (informative) Reliability of method .11

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.ISO shall not be held responsible for identifying any or all such patent rights.
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 TC 38, Textiles, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
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.

iv
Introduction
The determination of the total content of various halogens can be used as a screening method for harmful
substances whose constituents include one or more of these halogens. For example, the fluorine content of
a textile can indicate that it contains legally restricted perfluorinated and polyfluorinated alkyl substances
(PFAS) or organic fluorine. High chlorine and bromine concentrations can indicate the presence of flame
retardants or biocides in the textile. It should be noted that the test method is not able to distinguish
between organically and inorganically bound halogens. It can also not distinguish between PFAS which
are characterised by at least one fully fluorinated methyl (-CF ) or methylene (-CF -) carbon atoms and
3 2
fluorinated alkyl substances which do comply with this specification.

v
FINAL DRAFT International Standard ISO/FDIS 20999:2026(en)
Textiles — Determination of total halogens in textile products
— Combustion and ion chromatography (C-IC) test method
1 Scope
This document specifies a test method for the determination of total amount of halogens (including fluorine,
chlorine, bromine and iodine) present in textile products by combustion and ion chromatography (C-IC).
This document is applicable to all materials of textile products which are combustible, e.g. fibres, fabrics,
plastic components (including coating), wood.
WARNING — If the textile products are made of halogenated fibres, the high amount of halogens can
contaminate the combustion and IC system.
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 3696, Water for analytical laboratory use — Specification and test methods
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
4 Principle
The test specimen is placed into a sample boat, and introduced into a combust
...


ISO/DISFDIS 20999
ISO/TC 38
Secretariat: JISCSAC
Date: 2025-12-032026-01-14
Textiles — Determination of total halogens fromin textile products —
Method using combustionCombustion and ion chromatography (C-IC)
test method
Textiles — Détermination des halogènes totaux présents dans les produits textiles — Méthode par combustion
et chromatographie ionique (C-CI)
DISFDIS stage
Warning for WD’s and CD’s
This document is not an ISO International Standard. It is distributed for review and comment. It is subject to change
without notice and may not be referred to as an International Standard.
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 supporting documentation.
ThiThis drs drafaft is t is submitted tsubmitted too a a p parallel arallel vovote in ISOte in ISO, CE, CEN.N.
Voting bVoting begins on:egins on: 2025 2025--0707--009    9
Voting tVoting tererminates on: 20minates on: 202525--1010--0101

ISO/DISFDIS 20999:20252026(en)
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
E-mail: copyright@iso.org
Website: www.iso.org
Published in Switzerland
iii
ISO/DISFDIS 20999:20252026(en)
Contents
Foreword . v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagents and materials . 1
5.2 Halide salts . 2
5.3 Standard solutions . 2
5.4 Eluent . 3
5.5 Absorption solution . 3
5.6 Oxygen . 3
6 Apparatus . 3
7 Preparation of test specimen . 4
8 Procedure . 4
8.1 Combustion by separate combustion device . 4
8.2 Determination by separate ion chromatograph (IC) . 4
8.3 Determination by combustion device coupled to an ion chromatograph (C-IC) . 4
9 Expression of results . 5
9.1 Calculation . 5
9.2 Limit of quantification (LOQ) . 5
9.3 Reliability of the test method . 5
10 Test report . 5
Annex A (informative) Combustion device . 6
Annex B (informative) Ion chromatographic analysis . 9
Annex C (informative) Reliability of method . 12

iv
ISO/DISFDIS 20999:20252026(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 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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent rights
in respect thereof. As of the date of publication of this document, ISO [had/had not] received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that this
may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents.ISO shall not be held responsible for identifying any or all such patent rights.
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 TC 38, Textiles, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 248, Textiles and textile products, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
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.
v
ISO/DISFDIS 20999:20252026(en)
Introduction
The determination of the total content of various halogens can be used as a screening method for harmful
substances whose constituents include one or more of these halogens. For example, the fluorine content of a
textile can indicate that it contains legally restricted perfluorinated and polyfluorinated alkyl substances
(PFAS) or organic fluorine. High chlorine and bromine concentrations can indicate the presence of flame
retardants or biocides in the textile. It should be noted that the test method is not able to distinguish between
organically and inorganically bound halogens. It can also not distinguish between PFAS which are
characterised by at least one fully fluorinated methyl (-CF ) or methylene (-CF -) carbon atoms and fluorinated
3 2
alkyl substances which do comply with this specification.
vi
ISO/DISFDIS 20999:20252026(en)
Textiles — Determination of total halogens fromin textile products —
Method using combustionCombustion and ion chromatography (C-IC)
test method
1 Scope
This document specifies a test method for the determination of total amount of halogens (including fluorine,
chlorine, bromine and iodine) present in textile products by combustion and ion chromatography (C-IC).
This document is applicable to all materials of textile productswhichproducts which are combustible, e.g.
fibres, fabrics, plastic components (including coating), wood.
WARNING — If the textile products are made of halogenated fibres, the high amount of halogens can
contaminate the combustion and IC system.
2 Normative references
There are no normative references in this document.
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 3696, Water for analytical laboratory use — Specification and test methods
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Principle
The test specimen is placed into a sample boat, and introduced into a combustion tube to be combusted at a
high temperature under a stream of oxygen and water vapour (pyrohydrolysis). The emerged hydrogen halide
gases are carried away with the gas stream, cooled and collected in an absorption solution. The concentrations
of the different halogens in the absorption solution are determined by ion chromatography (IC).
5 Reagents and materials
Unless otherwise specified, analytical grade chemicals shall be used.
5.1 Water, Grade 1 water as specified in ISO 3696.
ISO/DISFDIS 20999:20252026(en)
5.2 Halide salts
® ® ®1)
5.2.1 Sodium fluoride (NaF), CAS Registry Number (CAS RN ) 7681-49-4. ®
5.2.2 Sodium chloride (NaCl), CAS RN 7647-14-5. ®
5.2.3 Potassium bromide (KBr), CAS RN 7758-02-3. ®
5.2.4 Potassium iodide (KI), CAS RN 7681-11-0.
5.3 Standard solutions
5.3.1 General
The laboratory shall decide which halogens need to be determined. Based on this decision, the required
standard solutions shall be prepared.
Commercially available certified reference materials can be used.
5.3.2 Standard stock solutions
Prepare standard stock solutions of fluorine, chlorine, bromine or iodine with an appropriate concentration
(e.g. c=1 000 mg/l) by dissolving the halide salts (5.2(5.2)) in water (5.1(5.1).). An example for preparing the
standard stock solutions is given in 0Table 1.
It is recommended that the standard stock solution of fluorine should be stored in polypropylene or high-
density polyethylene container. The standard stock solutions of fluorine, chlorine, bromine or iodine should
be stored in a brown bottle at 0 °C to 4 °C for 6 months.
Table 1 — Example for preparing standard stock solutions of halogens
Standard stock Halide salts Mass Final volume Solvent
sol
...


PROJET FINAL
Norme
internationale
ISO/TC 38
Textiles — Détermination des
Secrétariat: SAC
halogènes totaux présents dans les
Début de vote:
produits textiles — Méthode par
2026-01-28
combustion et chromatographie
Vote clos le:
ionique (C-CI)
2026-03-25
Textiles — Determination of total halogens in textile products —
Combustion and ion chromatography (C-IC) test method
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
NORMES POUVANT
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
Numéro de référence
PROJET FINAL
Norme
internationale
ISO/TC 38
Textiles — Détermination des
Secrétariat: SAC
halogènes totaux présents dans les
Début de vote:
produits textiles — Méthode par
2026-01-28
combustion et chromatographie
Vote clos le:
ionique (C-CI)
2026-03-25
Textiles — Determination of total halogens in textile products —
Combustion and ion chromatography (C-IC) test method
LES DESTINATAIRES DU PRÉSENT PROJET SONT
INVITÉS À PRÉSENTER, AVEC LEURS OBSERVATIONS,
NOTIFICATION DES DROITS DE PROPRIÉTÉ DONT ILS
AURAIENT ÉVENTUELLEMENT CONNAISSANCE ET À
FOURNIR UNE DOCUMENTATION EXPLICATIVE.
DOCUMENT PROTÉGÉ PAR COPYRIGHT
OUTRE LE FAIT D’ÊTRE EXAMINÉS POUR
ÉTABLIR S’ILS SONT ACCEPTABLES À DES FINS
© ISO 2026 INDUSTRIELLES, TECHNOLOGIQUES ET COM-MERCIALES,
AINSI QUE DU POINT DE VUE DES UTILISATEURS, LES
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
PROJETS DE NORMES
TRAITEMENT PARALLÈLE ISO/CEN
INTERNATIONALES DOIVENT PARFOIS ÊTRE CONSIDÉRÉS
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
DU POINT DE VUE DE LEUR POSSI BILITÉ DE DEVENIR DES
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
NORMES POUVANT
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
SERVIR DE RÉFÉRENCE DANS LA RÉGLEMENTATION
NATIONALE.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse Numéro de référence
ii
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Principe. 1
5 Réactifs et matériaux . 1
6 Appareillage . 3
7 Préparation des éprouvettes . 4
8 Mode opératoire . 4
8.1 Combustion au moyen du système séparé .4
8.2 Détermination au moyen du chromatographe ionique (CI) .4
8.3 Détermination au moyen du système de combustion couplé à un chromatographe
ionique (C-CI) .4
9 Expression des résultats . 5
9.1 Calcul .5
9.2 Limite de quantification (LOQ) .5
9.3 Fiabilité de la méthode d’essai .5
10 Rapport d’essai . 5
Annexe A (informative) Système de combustion . 6
Annexe B (informative) Analyse par chromatographie ionique . 9
Annexe C (informative) Fiabilité de la méthode .11

iii
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
confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude a le droit de faire
partie du comité technique créé à cet effet. Les organisations internationales, gouvernementales et non
gouvernementales, en liaison avec l’ISO participent également aux travaux. L’ISO collabore étroitement avec
la Commission électrotechnique internationale (IEC) en ce qui concerne la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/IEC, Partie 1. Il convient, en particulier, de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document
a été rédigé conformément aux règles de rédaction données dans les Directives ISO/IEC, Partie 2
(voir www.iso.org/directives).
L’ISO attire l’attention sur le fait que la mise en application du présent document peut entraîner l’utilisation
d’un ou de plusieurs brevets. L’ISO ne prend pas position quant à la preuve, à la validité et à l’applicabilité
de tout droit de brevet revendiqué à cet égard. À la date de publication du présent document, l’ISO n’avait
pas reçu notification qu’un ou plusieurs brevets pouvaient être nécessaires à sa mise en application.
Toutefois, il y a lieu d’avertir les responsables de la mise en application du présent document que des
informations plus récentes sont susceptibles de figurer dans la base de données de brevets, disponible à
l’adresse www.iso.org/brevets. L’ISO ne saurait être tenue pour responsable de ne pas avoir identifié tout ou
partie de tels droits de brevet.
Les appellations commerciales éventuellement mentionnées dans le présent document sont données pour
information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un engagement.
Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation
de la conformité, ou pour toute information au sujet de l’adhésion de l’ISO aux principes de l’Organisation
mondiale du commerce (OMC) concernant les obstacles techniques au commerce (OTC), voir le lien
suivant: www.iso.org/iso/fr/avant-propos.html.
Le présent document a été élaboré par le comité technique ISO/TC 38, Textiles, en collaboration avec le
comité technique CEN/TC 248, Textiles et produits textiles, du Comité européen de normalisation (CEN)
conformément à l’Accord de coopération technique entre l’ISO et le CEN (Accord de Vienne).
Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent
document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes se
trouve à l’adresse www.iso.org/fr/members.html.

iv
Introduction
La détermination de la teneur totale en divers halogènes peut être utilisée comme méthode de criblage de
substances nocives dont les composants comprennent un ou plusieurs de ces halogènes. Par exemple, la
teneur en fluor d'un textile peut indiquer qu'il contient des substances alkylées perfluorées et polyfluorées
(PFAS), dont l'utilisation est légalement restreinte, ou du fluor organique. Des concentrations élevées de
chlore et de brome peuvent indiquer la présence de retardateurs de flamme ou de biocides dans le textile. Il
convient de noter que la méthode d'essai ne permet pas de distinguer les halogènes liés organiquement de
ceux liés inorganiquement. Elle ne permet pas non plus de distinguer les PFAS, qui se caractérisent par au
moins un atome de carbone méthyle (-CF ) ou méthylène (-CF -) entièrement fluoré, des substances alkylées
3 2
fluorées qui sont conformes à cette spécification.

v
PROJET FINAL Norme internationale ISO/FDIS 20999:2026(fr)
Textiles — Détermination des halogènes totaux présents
dans les produits textiles — Méthode par combustion et
chromatographie ionique (C-CI)
1 Domaine d’application
Le présent document spécifie une méthode d’essai pour la détermination de la quantité totale d’halogènes
(y compris le fluor, le chlore, le brome et l’iode) présents dans les produits textiles par combustion et
chromatographie ionique (C-CI).
Le présent document s’applique à tous matériaux de produits textiles qui sont combustibles, tels que des
fibres, des étoffes, des composants plastiques (y compris des enductions), du bois.
AVERTISSEMENT — Si les produits textiles sont fabriqués à partir de fibres halogénées, la quantité
élevée d’halogènes peut contaminer le système de combustion et le système CI.
2 Références normatives
Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur
contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique. Pour
les références non datées, la dernière édition du document de référence s'applique (y compris les éventuels
amendements).
ISO 3696, Eau pour laboratoire à usage analytique — Spécification et méthodes d'essai
3 Termes et définitions
Aucun terme n’est défini dans le présent document.
L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en normalisation,
consultables aux adresses suivantes:
— ISO Online browsing platform: disponible à l’adresse http:// www .iso .org/ obp
— IEC Electropedia: disponible à l’adresse http:// www .electropedia .org/
4 Principe
L’éprouvette est placée dans une capsule de prélèvement et est introduite dans un tube de combustion
pour être brûlée à haute température sous un flux d’oxygène et de vapeur d’eau (pyrohydrolise). Les gaz
d’halogénure d’hydrogène émergés sont entraînés avec le flux de gaz, refroidis et collectés dans une solution
d’absorption. Les concentrations des différents halogènes dans la solution d’absorption sont déterminées
par chromatographie ionique (CI).
5 Réactifs et matériaux
Sauf indication contraire, les réactifs doivent être de qualité analytique.
5.1 Eau, Eau de qualité 1, comme spécifié dans à l’ISO 3696.

5.2 Sels haloïdes
®1)
5.2.1 Fluorure de sodium (NaF), NR CAS: 7681-49-4. ®
5.2.2 Chlorure de sodium (NaCl), NR CAS: 7647-14-5. ®
5.2.3 Bromure de potassium (KBr), NR CAS: 7758-02-3. ®
5.2.4 Iodure de potassium (KI), NR CAS: 7681-11-0.
5.3 Solutions étalons
5.3.1 Généralités
Le laboratoire doit décider quels halogènes doivent être déterminés. En fonction de cette décision, les
solutions étalons requises doivent être préparées.
Des matériaux de référence certifiés disponibles
...

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