Textiles — Determination of index ingredient from coloured textile — Part 4: Catechu

This document specifies a test method which identifies the index ingredient chemical included in coloured fabric with catechu. Catechu can be applied to both natural fibre and man-made fibre.

Textiles — Détermination d'indicateurs d'ingrédients de textiles colorés — Partie 4: Cachou

General Information

Status
Published
Publication Date
08-Nov-2021
Current Stage
6060 - International Standard published
Start Date
09-Nov-2021
Completion Date
09-Nov-2021
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ISO 22195-4:2021 - Textiles -- Determination of index ingredient from coloured textile
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INTERNATIONAL ISO
STANDARD 22195-4
First edition
2021-11
Textiles — Determination of index
ingredient from coloured textile —
Part 4:
Catechu
Textiles — Détermination d'indicateurs d'ingrédients de textiles
colorés —
Partie 4: Cachou
Reference number
ISO 22195-4:2021(E)
© ISO 2021
---------------------- Page: 1 ----------------------
ISO 22195-4:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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
© ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 22195-4:2021(E)
Contents Page

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

Introduction .................................................................................................................................................................................................................................v

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

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

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

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

5 Reagents ........................................................................................................................................................................................................................ 2

6 Apparatus .................................................................................................................................................................................................................... 2

7 Procedure ....................................................................................................................................................................................................................2

7.1 Standard preparation ....................................................................................................................................................................... 2

7.2 Preparation of specimen ........................................................................................................................................... ..................... 2

7.3 Analysis ......................................................................................................................................................................................................... 3

7.4 Qualification of catechin ................................................................................................................................................................ 3

8 Test report .................................................................................................................................................................................................................. 3

Annex A (informative) Example of test result ............................................................................................................................................ 4

iii
© ISO 2021 – All rights reserved
---------------------- Page: 3 ----------------------
ISO 22195-4:2021(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.
A list of all parts in the ISO 22195 series can be found on the ISO website.

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.
© ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 22195-4:2021(E)
Introduction

There is no doubt that dyeing plays the most important role in expressing the colour of clothes. Until

the invention of synthetic dyes capable of expressing diverse colours today, humankind used materials

obtained from nature to dye fabric. Typically, colourants were obtained from plants or various materials

were extracted from minerals or insects. Dyeing fabrics using materials derived from these natural

substances made it necessary to identify which substances the colourant was derived from. In other

words, there has been a demand to confirm whether a fabric has been dyed with a natural substance.

There are several natural dyes raw material which give similar colour tone, they have different

colouring molecule and the precise colorant. But each has different environmental profile which decided

Environment impact of dyestuff. Textile dyed with natural dyes is claimed for environmental benefit

mainly. Identification of dye helps in knowing and verifying the claims, that will help environment to

get benefit exactly in
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 23332-1
ISO/TC 38
Textiles — Determination of index
Secretariat: JISC
ingredient from coloured textile —
Voting begins on:
2021-08-11
Part 1:
Voting terminates on:
Catechu
2021-10-06
Textiles — Détermination d'indicateurs d'ingrédients de textiles
colorés —
Partie 1: Cachou
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
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 23332-1:2021(E)
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. ISO 2021
---------------------- Page: 1 ----------------------
ISO/FDIS 23332-1:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 23332-1:2021(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

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

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

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

5 Reagents ........................................................................................................................................................................................................................ 2

6 Apparatus ..................................................................................................................................................................................................................... 2

7 Procedure..................................................................................................................................................................................................................... 2

7.1 Standard preparation ........................................................................................................................................................................ 2

7.2 Preparation of specimen................................................................................................................................................................. 2

7.3 Analysis.......................................................................................................................................................................................................... 3

7.4 Qualification of catechin ................................................................................................................................................................. 3

8 Test report ................................................................................................................................................................................................................... 3

Annex A (informative) Example of test result ............................................................................................................................................. 4

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 23332-1:2021(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.
A list of all parts in the ISO 23332 series can be found on the ISO website.

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 © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/FDIS 23332-1:2021(E)
Introduction

There is no doubt that dyeing plays the most important role in expressing the colour of clothes. Until

the invention of synthetic dyes capable of expressing diverse colours today, humankind used materials

obtained from nature to dye fabric. Typically, colourants were obtained from plants or various materials

were extracted from minerals or insects. Dyeing fabrics using materials derived from these natural

substances made it necessary to identify which substances the colourant was derived from. In other

words, there has been a demand to confirm whether a fabric has been dyed with a natural substance.

There are several natural dyes raw material which give similar colour tone, they have different

colouring molecule and the precise colorant. But each has different env
...

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