Reaffirmed 2023

NATIONAL FOREWORD

This Indian Standard (Part 2) which is identical with ISO 16373-2 : 2014 ‘Textiles — Dyestuffs — Part 2: General method for the determination of extractable dyestuffs including allergenic and carcinogenic dyestuffs (Method using pyridine-water)’ issued by the International Organization of Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Footwear Sectional Committee and approval of the Chemical Division Council.

Footwear consists of many components made of textiles, for example, insocks, insoles, linings, laces, tongues, whole upper (canvas shoes). Textiles are coloured with the help of several types of dyes, some of which might pose as health hazards. It is thus important to be able to distinguish different types of dyes and to determine them qualitatively and quantitatively. This IS series deals with identification and quantification of dyes used in textiles. In this part of the IS, the principle of the test method for determination of dyes is based on extraction using pyridine-water solution, which has been found to be the most efficient solution to extract a large range of dyestuffs, including allergenic and carcinogenic dyestuffs.

This standard is published in three parts. The other parts in this series are:

Part 1 General principles of testing coloured textiles for dyestuff identification

Part 3 Method for determination of certain carcinogenic dyestuffs (method using triethylamine/methanol)

The text of the ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain terminologies and conventions are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:

a) Wherever the words ‘International Standard’ appear referring to this standard, they should be read as ‘Indian Standard’

b) Comma (,) has been used as a decimal marker, while in Indian Standards, the current practice is to use a point (.) as the decimal marker.