ISO 18218-1:2015
Leather - Determination of ethoxylated alkylphenols - Part 1: Direct method
- Standard No.
- ISO 18218-1:2015
- Release Date
- 2015
- Published By
- International Organization for Standardization (ISO)
- Status
- 2023-06
- Replace By
- ISO 18218-1:2023
- Latest
- ISO 18218-1:2023
- Scope
- This part of ISO 18218 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 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.
ISO 18218-1:2015 Referenced Document
- ISO 18218-2:2015 Leather - Determination of ethoxylated alkylphenols - Part 2: Indirect method
- ISO 2418:2002 Leather - Chemical, physical and mechanical and fastness tests - Sampling location
- ISO 3696:1987 Water for analytical laboratory use; Specification and test methods
- ISO 4044:2008 Leather - Chemical tests - Preparation of chemical test samples
ISO 18218-1:2015 history
- 2023 ISO 18218-1:2023 Leather. Determination of ethoxylated alkylphenols (APEO) - Direct method
- 2015 ISO 18218-1:2015 Leather - Determination of ethoxylated alkylphenols - Part 1: Direct method
