Textiles -- Quantitative chemical analysis

This document specifies a method, using formic acid and zinc chloride, to determine the mass percentage of viscose or certain types of cupro or modal or lyocell, after removal of non-fibrous matter, in textiles made of mixtures of — viscose or certain types of the cupro or modal or lyocell fibres with — flax fibres. This document is not applicable to mixtures in which the flax fibre has suffered extensive chemical degradation, nor when the viscose, cupro, modal or lyocell fibre is rendered incompletely soluble by the presence of certain permanent finishes or reactive dyes that cannot be removed completely.

Textiles -- Analyse chimique quantitative

Le présent document spécifie une méthode de détermination, ŕ l'acide formique et au chlorure de zinc, de la masse exprimée en pourcentage de viscose ou de certains types de cupro, modal ou lyocell, aprčs élimination des matičres non fibreuses, dans les textiles composés de mélanges de: — viscose ou certains types de fibres de cupro, modal ou lyocell; avec — fibres de lin. Le présent document ne s'applique pas aux mélanges dans lesquels les fibres de lin ont subi une dégradation chimique importante ou lorsque les fibres de viscose, cupro, modal ou lyocell ne sont pas complčtement solubles en raison de la présence de certains appręts permanents ou colorants réactifs qu'il est impossible d'éliminer complčtement.

General Information

Status
Published
Publication Date
10-Dec-2020
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
13-Nov-2020
Completion Date
13-Nov-2020
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INTERNATIONAL ISO
STANDARD 1833-22
Second edition
2020-12
Textiles — Quantitative chemical
analysis —
Part 22:
Mixtures of viscose or certain types
of cupro or modal or lyocell with flax
fibres (method using formic acid and
zinc chloride)
Textiles — Analyse chimique quantitative —
Partie 22: Mélanges de viscose ou de certains types de cupro, modal
ou lyocell avec des fibres de lin (méthode à l’acide formique et au
chlorure de zinc)
Reference number
ISO 1833-22:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 1833-22:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1833-22:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Reagents and apparatus ............................................................................................................................................................................... 2

5.1 General ........................................................................................................................................................................................................... 2

5.2 Reagent .......................................................................................................................................................................................................... 2

5.3 Apparatus .................................................................................................................................................................................................... 2

6 Test procedure ........................................................................................................................................................................................................ 2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Removal of the non-cellulosic components of the flax fibres ......................................................................... 2

6.3 Dissolution of viscose, cupro, modal or lyocell fibre .............................................................................................. 2

7 Calculation and expression of results ............................................................................................................................................. 3

7.1 Calculation of loss in mass during pre-treatment .................................................................................................... 3

7.2 Calculation of dry mass of after-transfer mixture corrected to its initial dry mass

before pre-treatment ......................................................................................................................................................................... 3

7.3 Calculation of dry masses of viscose or cupro or modal or lyocell and pretreated

flax fibres ...................................................................................................................................................................................................... 3

7.4 Calculation of the percentages of each component with agreed percentage

additions for moisture ...................................................................................................................................................................... 4

8 Precision ....................................................................................................................................................................................................................... 4

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 1833-22:2020(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 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).

This second edition cancels and replaces the first edition (ISO 1833-22:2013), which has been technically

revised. The main changes compared to the previous edition are as follows:

— the title has been changed from “Mixtures of viscose or certain types of cupro or modal or lyocell

and flax fibres (method using formic acid and zinc chloride)” to “Mixtures of viscose or certain types

of cupro or modal or lyocell with flax fibres (method using formic acid and zinc chloride)”;

— the warning has been removed (it is already mentioned in ISO 1833-1);

— Clause 3 (Terms and definitions) has been added and subsequent clauses have been renumbered;

— in 5.2 (former 4.2), the sodium hydroxide solution has been removed (as listed in ISO 1833-1:2020);

— in 5.2.1, additional instruction in case of the use of zinc chloride other than fused anhydrous zinc

chloride has been added;

— in 6.2 (former 5.2), the pre-treatment procedure has been replaced with a reference to

ISO 1833-1:2020, A.5.25;

— in 5.3.2, the heating temperature of 40 °C has been removed and changed to 70 °C;

— in 6.3, the testing temperature of 40 °C has been removed and changed to 70 °C, and the neutralisation

stage has been detailed;
— in 7.3, the d-factors for flax has been updated;
— in Clause 8, “percentage point” has been added to avoid confusion;
iv © ISO 2020 – All rights reserved
---------------------- Page: 4
...

NORME ISO
INTERNATIONALE 1833-22
Deuxième édition
2020-12
Textiles — Analyse chimique
quantitative —
Partie 22:
Mélanges de viscose ou de certains
types de cupro, modal ou lyocell avec
des fibres de lin (méthode à l’acide
formique et au chlorure de zinc)
Textiles — Quantitative chemical analysis —
Part 22: Mixtures of viscose or certain types of cupro or modal or
lyocell with flax fibres (method using formic acid and zinc chloride)
Numéro de référence
ISO 1833-22:2020(F)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 1833-22:2020(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2020

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.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2020 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO 1833-22:2020(F)
Sommaire Page

Avant-propos ..............................................................................................................................................................................................................................iv

1 Domaine d’application ................................................................................................................................................................................... 1

2 Références normatives ................................................................................................................................................................................... 1

3 Termes et définitions ....................................................................................................................................................................................... 1

4 Principe .......................................................................................................................................................................................................................... 1

5 Réactifs et appareillage ................................................................................................................................................................................. 2

5.1 Généralités .................................................................................................................................................................................................. 2

5.2 Réactif ............................................................................................................................................................................................................. 2

5.3 Appareillage............................................................................................................................................................................................... 2

6 Mode opératoire d’essai................................................................................................................................................................................ 2

6.1 Généralités .................................................................................................................................................................................................. 2

6.2 Élimination des composants non cellulosiques des fibres de lin ................................................................ 2

6.3 Dissolution des fibres de viscose, cupro, modal ou lyocell ............................................................................... 2

7 Calcul et expression des résultats ...................................................................................................................................................... 3

7.1 Calcul de la perte de masse lors du prétraitement .................................................................................................. 3

7.2 Calcul de la masse anhydre du mélange après transfert, corrigée de sa masse

anhydre initiale avant prétraitement ................................................................................................................................... 3

7.3 Calcul des masses anhydres des fibres de viscose, cupro, modal ou lyocell et

des fibres de lin prétraitées ......................................................................................................................................................... 4

7.4 Calcul des pourcentages de chaque composant avec taux de reprise d’humidité

conventionnels ........................................................................................................................................................................................ 5

8 Fidélité ............................................................................................................................................................................................................................ 5

© ISO 2020 – Tous droits réservés iii
---------------------- Page: 3 ----------------------
ISO 1833-22:2020(F)
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’attention est attirée sur le fait que certains des éléments du présent document peuvent faire l’objet de

droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable

de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant

les références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de

l’élaboration du document sont indiqués dans l’Introduction et/ou dans la liste des déclarations de

brevets reçues par l’ISO (voir www .iso .org/ brevets).

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 nature volontaire des normes, 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.

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).

Cette deuxième édition annule et remplace la première édition (ISO 1833-22:2013), qui a fait l’objet

d’une révision technique. Les principales modifications par rapport à l’édition précédente sont les

suivantes:

— modification du titre de «Mélanges de viscose ou de certains types de cupro, modal ou lyocell et

de fibres de lin (méthode à l’acide formique et au chlorure de zinc)» en «Mélanges de viscose ou de

certains types de cupro, modal ou lyocell avec des fibres de lin (méthode à l’acide formique et au

chlorure de zinc»;
— suppression de l’avertissement (lequel est déjà mentionné dans l’ISO 1833-1);

— ajout de l’Article 3 (Termes et définitions) et renumérotation des articles suivants;

— en 5.2 (auparavant 4.2), suppression de la solution d’hydroxyde de sodium (comme spécifié dans

l’ISO 1833-1:2020);

— en 5.2.1, ajout d’instructions supplémentaires pour l’utilisation de chlorure de zinc autre que du

chlorure de zinc anhydre fondu;

— en 6.2 (auparavant 5.2), remplacement du mode opératoire de prétraitement par un renvoi

à l’ISO 1833-1:2020, A.5.25;

— en 5.3.2, suppression de la température de chauffage de 40 °C et remplacement par 70 °C;

iv © ISO 2020 – Tous droits réservés
---------------------- Page: 4 ----------------------
ISO 1833-22:2020(F)

— en 6.3, suppression de la température d’essai de 40 °C et remplacement par 70 °C, ajout de détails

à l’étape de neutralisation;
— en 7.3, mise à jour des facteurs d pour le lin;
— dans l’Article 8, ajout de «point de pourcentage» pour éviter toute confusion;

— suppression de l’ancienne Annexe A informative, relative aux résultats des essais d’aptitude, car elle

se fondait sur une méthode d’essai précédente définissant la température d’essai à 40 °C;

— suppression de la Bibliographie.
Une liste de toutes les parties de la sé
...

INTERNATIONAL ISO
STANDARD 1833-22
Second edition
Textiles — Quantitative chemical
analysis —
Part 22:
Mixtures of viscose or certain types
of cupro or modal or lyocell with flax
fibres (method using formic acid and
zinc chloride)
Textiles — Analyse chimique quantitative —
Partie 22: Mélanges de viscose ou de certains types de cupro, modal
ou lyocell avec des fibres de lin (méthode à l’acide formique et au
chlorure de zinc)
PROOF/ÉPREUVE
Reference number
ISO 1833-22:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 1833-22:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2020

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
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1833-22:2020(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 1

5 Reagents and apparatus ............................................................................................................................................................................... 2

5.1 General ........................................................................................................................................................................................................... 2

5.2 Reagent .......................................................................................................................................................................................................... 2

5.3 Apparatus .................................................................................................................................................................................................... 2

6 Test procedure ........................................................................................................................................................................................................ 2

6.1 General ........................................................................................................................................................................................................... 2

6.2 Removal of the non-cellulosic components of the flax fibres ......................................................................... 2

6.3 Dissolution of viscose, cupro, modal or lyocell fibre .............................................................................................. 2

7 Calculation and expression of results ............................................................................................................................................. 3

7.1 Calculation of loss in mass during pre-treatment .................................................................................................... 3

7.2 Calculation of dry mass of after-transfer mixture corrected to its initial dry mass

before pre-treatment ......................................................................................................................................................................... 3

7.3 Calculation of dry masses of viscose or cupro or modal or lyocell and pretreated

flax fibres ...................................................................................................................................................................................................... 3

7.4 Calculation of the percentages of each component with agreed percentage

additions for moisture ...................................................................................................................................................................... 4

8 Precision ....................................................................................................................................................................................................................... 4

© ISO 2020 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 1833-22:2020(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 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).

This second edition cancels and replaces the first edition (ISO 1833-22:2013), which has been technically

revised. The main changes compared to the previous edition are as follows:

— the title has been changed from “Mixtures of viscose or certain types of cupro or modal or lyocell

and flax fibres (method using formic acid and zinc chloride)” to “Mixtures of viscose or certain types

of cupro or modal or lyocell with flax fibres (method using formic acid and zinc chloride)”;

— the warning has been removed (it is already mentioned in ISO 1833-1);

— Clause 3 (Terms and definitions) has been added and subsequent clauses have been renumbered;

— in 5.2 (former 4.2), the sodium hydroxide solution has been removed (as listed in ISO 1833-1:2020);

— in 5.2.1, additional instruction in case of the use of zinc chloride other than fused anhydrous zinc

chloride has been added;

— in 6.2 (former 5.2), the pre-treatment procedure has been replaced with a reference to

ISO 1833-1:2020, A.5.25;

— in 5.3.2, the heating temperature of 40 °C has been removed and changed to 70 °C;

— in 6.3, the testing temperature of 40 °C has been removed and changed to 70 °C, and the neutralisation

stage has been detailed;
— in 7.3, the d-factors for flax has been updated;
— in Clause 8, “percentage point” has been added to avoid confusion;
iv PROOF/ÉPREUVE © ISO 2020 – All rights reserved
---------------------- Page: 4 ----------------
...

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