ISO 22195-3:2023

INTERNATIONAL ISO
STANDARD 22195-3
First edition
2023-11
Textiles — Determination of index
ingredient from coloured textile —
Part 3:
Myrobalan
Textiles — Détermination d'indicateurs d'ingrédients de textiles
colorés —
Partie 3: Mirobolant
Reference number
© ISO 2023
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Reagent . 2
6 Apparatus . 2
7 Procedure .2
7.1 Standard preparation . 2
7.2 Preparation of test specimen . 2
7.3 Analysis . 3
7.4 Determination and calculation . 3
7.4.1 Determination of chebulagic acid . 3
7.4.2 Calibration curve. 3
7.4.3 Calculation of chebulagic acid . 3
8 Test report . 3
Annex A (informative) Example of test result . 5
iii
Foreword
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iv
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, materials obtained from nature
to dye fabric have been used. Typically, colourants were obtained from plants or various materials were
extracted from minerals or insects. When dyeing fabrics using materials derived from these natural
substances, it becomes necessary to identify which substances the colourant was derived from. In other
words, there has been a demand to confirm whether a fabric is dyed using a natural substance.
A test method is developed to identify which type of natural substances has been used.
v
INTERNATIONAL STANDARD ISO 22195-3:2023(E)
Textiles — Determination of index ingredient from
coloured textile —
Part 3:
Myrobalan
1 Scope
This document specifies a test method for the determination of the index ingredient of chemicals in
coloured fabric with myrobalan.
2 Normative references
The following document is 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 analy
...