International Standard
ISO 18218-1:2023
Leather — Determination of ethoxylated alkylphenols (APEO) — Part 1: Direct method
Reference number
ISO 18218-1:2023
Edition 2
2023-06
International Standard
Read sample
ISO 18218-1:2023
83457
Published (Edition 2, 2023)

ISO 18218-1:2023

ISO 18218-1:2023
83457
Language
Format
CHF 63
Convert Swiss francs (CHF) to your currency

Abstract

This document is a method for determining ethoxylated alkylphenols (APEO) [nonyphenol ethoxylate (NPEOn, where 2 ≤ n ≤ 16) and octylphenol ethoxylate (OPEOn, where 2 ≤ n ≤ 16)] in leather. This direct method is especially suitable when a larger number of leather samples are to be checked for the presence of ethoxylated alkylphenols.

This method requires the use of liquid chromatography (LC) with a triple quadrupole mass spectrometer (MS/MS) to identify and quantify the ethoxylated alkylphenols.

NOTE 1        In the leather industry, the most commonly used ethoxylated alkylphenol is the NPEO, with an average of 9 EO. It has an optimum cloud point in water for the typical leather processing temperatures of 40 °C to 55 °C.

NOTE 2        This document and ISO 18218-2 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.

General information

  •  : Published
     : 2023-06
    : International Standard published [60.60]
  •  : 2
     : 10
  • IULTCS
    59.140.30 
  • RSS updates

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)