EN ISO 21135:2024

Chemicals for the leather tanning industry - Determination of the total content of certain bisphenols (ISO 21135:2024)

Publication date:   Jul 17, 2024

Scope

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.