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EN ISO 23649:2025

Chemicals for the leather tanning industry - Determination of cyclosiloxanes (ISO 23649:2025)

Publication date:   Apr 14, 2025

General information

60.60   Standard published   Feb 26, 2025

CEN

CEN/TC 289 Leather

European Norm

59.140.30   Leather and furs

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Scope

This document specifies a method for determining the total content of the following cyclosiloxanes in chemicals for the leather tanning industry:
—     octamethylcyclotetrasiloxane (D4);
—     decamethylcyclopentasiloxane (D5);
—     dodecamethylcyclohexasiloxane (D6);
This method requires the use of gas chromatography (GC) equipped with a single quadrupole mass spectrometer (MS) to identify and quantify the cyclosiloxanes.

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PUBLISHED
EN ISO 23649:2025
60.60 Standard published
Feb 26, 2025