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GB/T 46326.2-2025Rubber products - Determination of toxic and harmful substances - Part 2: Short chain chlorinated paraffins (SCCPs) (English PDF)

橡胶制品　有毒有害物质的测定　第2部分：短链氯化石蜡

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

October 5, 2025

Implementation date

May 1, 2026

Scope

GB/T 46326.2-2025 is the English-translated version of 橡胶制品　有毒有害物质的测定　第2部分：短链氯化石蜡.

GB/T 46326.2-2025 is the Chinese standard "Rubber products - Determination of toxic and harmful substances - Part 2: Short chain chlorinated paraffins (SCCPs)".

Its scope clause reads: This document describes the use of gas chromatography-electron capture negative chemical ion source mass spectrometry to determine C10–C13 short-chain chlorides in rubber products.

Methods for determining the content of SCCPs (skin waxes, copper... This document applies to the determination of SCCPs content in rubber products. Its clauses include terms and definitions; principles; reagents or materials.

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Document preview — GB/T 46326.2-2025

National Standard of the People's Republic of China

ICS: 83.060
Classification: G 40

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
Introduction
1 Scope

1 Scope

This document describes the use of gas chromatography-electron capture negative chemical ion source mass spectrometry to determine C10–C13 short-chain chlorides in rubber products.

Methods for determining the content of SCCPs (skin waxes, copper...

This document applies to the determination of SCCPs content in rubber products.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 3516-2024 Determination of solvent extractables in rubber

GB/T 17783 Preparation of chemical test samples and specimens for vulcanized or thermoplastic rubber

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1

A mixture of chloroalkanes with 10 to 13 carbon atoms, with the general chemical formula Cm H2m 2-nCln (m=10 to 13).

4 Principles

The sample was added to n-hexane and subjected to Soxhlet extraction. The extract was then eluted using a silica gel solid-phase extraction column and purified with concentrated sulfuric acid. The final product was obtained using a gas...

Determination was performed using chromatographic-electron capture negative chemical ionization source mass spectrometry (GC-ECNI-MS), with quantification using the internal standard method.

5 Reagents or materials

Unless otherwise specified, all reagents used are of analytical grade.

5.3 Dichloromethane

chromatographic grade.

5.4 Concentrated sulfuric acid

approximately 98% (mass fraction). […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Normative references

Editions of GB/T 46326.2

Edition	Title	Revision	Status
GB/T 46326.2-2025	Rubber products - Determination of toxic and harmful substances - Part 2: Short chain chlorinated paraffins (SCCPs)	current edition	Current

This page sells the current edition, GB/T 46326.2-2025. Earlier editions are listed for reference only.

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