prSSH EN ISO 23649:2025

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

General information

Current stage: 40.60 Effective date: 11 maj 2026

Next stage: 50.99

Originator: DPS

Owner: DPS/KT 309

Type: European Norm

ICS: 59.140.30

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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prSSH EN ISO 23649:2025
40.60 Close of voting
11 maj 2026

prSSH EN ISO 23649:2025

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

General information

Scope

Life cycle

NOW

Related project

Adopted from EN ISO 23649:2025 IDENTICAL

Adopted from ISO 23649:2025 IDENTICAL