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ISO 18218-2:2019

Leather — Determination of ethoxylated alkylphenols — Part 2: Indirect method
18 qer 2019

General information

90.93     26 mar 2025

ISO

IULTCS

International Standard

59.140.30  

anglisht   frëngjisht  

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Scope

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.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 18218-2:2015

NOW

PUBLISHED
ISO 18218-2:2019
90.93 Standard confirmed
26 mar 2025