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EVS-EN ISO 18218-2:2019

Leather - Determination of ethoxylated alkylphenols - Part 2: Indirect method (ISO 18218-2:2019)

General information
Valid from 01.08.2019
Base Documents
ISO 18218-2:2019; EN ISO 18218-2:2019
Directives or regulations
None
Standard history
Status
Date
Type
Name
01.08.2019
Main
02.07.2015
Main
This document 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 analysis of the alkylphenol ethoxylate is made by cleaving the alkylphenol ethoxylate and measuring the released alkylphenol. NOTE ISO 18218-1 and this document use different solvents for the extraction of the ethoxylated alkylphenols from leather. Consequently, the two analytical methods are expected to give similar trends but not necessarily the same absolute result for the ethoxylated alkylphenol content in leather.
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