ISO 21135:2024

Chemicals for the leather tanning industry — Determination of the total content of certain bisphenols

This document specifies a method for determining the total content (solvent extractable) of the following bisphenols in chemicals for the leather tanning industry:

—???? bisphenol A;

—???? bisphenol AF;

—???? bisphenol B;

—???? bisphenol F;

—???? bisphenol S.

This method requires the use of liquid chromatography (LC) with either a single quadrupole mass spectrometer (MS), a triple quadrupole mass spectrometer (MS/MS), an ultraviolet (UV) detector, a diode array detector (DAD) or a fluorescence detector (FLD) to identify and quantify the bisphenols.

NOTE?1??????? This method can also be used for other bisphenols if they are validated by the laboratory.

NOTE?2??????? Bisphenol S cannot be detected with FLD.

Edition	2024
Published Date	2024
Published By	International Standardization Organisation
Page Count	13