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ISO 23649:2025

Chemicals for the leather tanning industry — Determination of cyclosiloxanes

Standard Details

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.

General Information

Status : Published
Standard Type: Main
Document No: ISO 23649:2025
Document Year: 2025
Pages: 9
Edition: 1

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ISO 23649:2025
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