Reaffirmed 2024

NATIONAL FOREWORD

This Indian Standard (Part 1) which is identical with ISO 2871-1 : 2010 ‘Surface active agents — detergents — determination of cationic-active matter content — Part 1: High-molecular-mass cationic-active matter’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on recommendation of the Soaps and other surface active agents Sectional Committee and approval of the Chemical Division Council.

The cationic active matter in detergent are the materials such as ‘quaternary ammonium compounds in which two of the alkyl groups each contain 10 or more carbon atoms’ or ‘salts of imidazoline or 3-methylimidazoline’.Considering the importance of test method for determination of cationic active matter content and to follow the uniform practices globally, the Committee felt that it would be more convenient to prepare this standard method by adoption of ISO 2871-1 on dual number basis. This method is applicable to solids or to aqueous solutions of the active material when the relative molecular mass of the cationic active matter is known or when it has been previously determined if its content is expressed as a percentage by mass.

Besides adopting ISO 2871-1, the committee decided to adopt ISO 2871-2 also, which is for determination of cationic active matter of low molecular mass on dual number basis in order to maintain the complete set of standards on Determination of cationic active matter content. Accordingly, it is decided to adopt this ISO standard as Part 1 of corresponding Indian Standard. The other part of this series is given below:

IS 17054 (Part 2) : 2018/ISO 2871-2 : 2010 Surface active agents — Detergents — Determination of cationic-active matter content: Part 2 Cationic-active matter of low molecular mass (between 200 and 500)

The text of 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.