ISO 21135:2024

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

Publication date:   May 15, 2024

General information

60.60 Standard published   May 15, 2024

ISO

IULTCS International Union of Leather Technologists and Chemists Societies

International Standard

59.140.30   Leather and furs

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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.

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PUBLISHED
ISO 21135:2024
60.60 Standard published
May 15, 2024