ISO 18218-1:2015

Leather — Determination of ethoxylated alkylphenols — Part 1: Direct method

Standard Details

ISO 18218-1:2015 is a method for determining ethoxylated alkylphenols (nonyphenol ethoxylate [NPEOn with 1 ≤ n ≤ 16] and octylphenol ethoxylate [OPEOn with 1 ≤ n ≤ 16]) in leather. This direct method is especially suitable where a larger number of leather samples are to be checked for the presence of ethoxylated alkylphenols.

This method requires the use of high-performance liquid chromatography (HPLC) with triple quadrupole mass spectrometer (MSMS) to identify and quantify the ethoxylated alkylphenols.

NOTE 1 In the leather industry, the most commonly used commercial 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 ISO 18218-1 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

Status : WITHDRAWN

Standard Type: Main

Document No: ISO 18218-1:2015

Document Year: 2015

Pages: 7

Edition: 1

ICS:
59.140.30 Leather and furs

Preview Document

Life Cycle

Published

ISO 18218-1:2023

Currently Viewing

WITHDRAWN

ISO 18218-1:2015

ISO 18218-1:2015

Standard Details

General Information

Life Cycle

Add Standards To Trackedge

Enquiry Form