IS 582 : Part 15 : Sec 2 : 2024/ISO 18218-2 : 2019 Methods of Chemical Testing of Leather - Part 15 Determination of Ethoxylated Alkylphenols (APEO) - Section 2 Indirect Method
NATIONAL FOREWORD
This Indian Standard (Part 15/Sec 2) which is identical to ISO 18218 -2 : 2019 'Leather - Determination of ethoxylated alkylphenols - Part 2: Indirect method' issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of the Leather, Tanning Materials and Allied Products Sectional Committee and approval of the Chemical Division Council.
Nonylphenol ethoxylate belongs to the non-ionic surfactants. The biodegradation of nonylphenol ethoxylate releases the persistent pollutant branched nonylphenol. Nonylphenol is a hormonal acting substance that is toxic for waterborne organisms and many other organisms. For this reason, the release of nonylphenol ethoxylate into the environment shall be avoided.
This standard specifies a method for determining alkylphenols (nonylphenol and octylphenol) and alkylphenol ethoxylates (nonylphenol ethoxylate and octylphenol ethoxylate) in leather and process auxiliaries. The analysis is based on high-performance liquid chromatography (HPLC) or gas chromatography-mass spectrometry (GC-MS).
The Committee responsible for formulating this standard has decided to harmonize the methods of test prescribed in IS 582 with those prescribed in ISO/IULTCS standards. Accordingly, the committee decided to retain IS 582 and publish the harmonized/adopted test methods published by ISO/IULTCS in various parts of IS 582 as this standard is widely recognized by the Indian Leather Industry.
The committee further decided to publish the adopted/harmonized standards in the following manner:
a) Wherever an existing test method prescribed in IS 582 is being replaced by the corresponding ISO/IULTCS test method, the relevant part will be published with the information in the national foreword about the method of IS 582 being superseded; and
b) When a new test method is being incorporated in IS 582, the same will be published as a new standard and as subsequent part of IS 582.