ISO 23649:2025

Chemicals for the leather tanning industry — Determination of cyclosiloxanes

Publication date: 14 shk 2025

General information

Current stage: 60.60 Effective date: 14 shk 2025

Originator: ISO

Owner: IULTCS

Type: International Standard

ICS: 59.140.30

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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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
ISO 23649:2025
60.60 Standard published
14 shk 2025