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GB/T 40723-2021Rubber - Determination the contents of total sulfur and total nitrogen - Automatic analyser method (English PDF)

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Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

October 11, 2021

Implementation date

May 1, 2022

Scope

GB/T 40723-2021 (Rubber - Determination the contents of total sulfur and total nitrogen - Automatic analyser method) is available as an English-translated PDF.

GB/T 40723-2021 is the Chinese standard "Rubber - Determination the contents of total sulfur and total nitrogen - Automatic analyser method". Its scope clause reads: This document describes the method to determine the total sulfur content (method A) and total nitrogen content (method B) in rubber using the automatic analyzer method.

This document is applicable to the determination of total sulfur and total nitrogen content in rubber. Note. When determining the total sulfur content in rubber, it will be affected by the sulfur content of accelerators, antioxidants and other additives.

The final measurement result is lower than the actual sulfur content added. The amount is high. Its clauses include terms and definitions.

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Document preview — GB/T 40723-2021

National Standard of the People's Republic of China

Classification: G 40

Issued by: State Administration for Market Regulation, China National Standardization Administration

Foreword
1 Scope
2 Normative references

1 Scope

This document describes the method to determine the total sulfur content (method A) and total nitrogen content (method B) in rubber using the automatic analyzer method.

This document is applicable to the determination of total sulfur and total nitrogen content in rubber.

Note. When determining the total sulfur content in rubber, it will be affected by the sulfur content of accelerators, antioxidants and other additives. The final measurement result is lower than the actual sulfur content added.

The amount is high.

2 Normative references

The contents of the following documents constitute the indispensable clauses of this document through normative references in the text. Among them, dated quotations

Only the version corresponding to that date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to

This document.

GB/T 15340 Natural and synthetic raw rubber sampling and sample preparation method (GB/T 15340-2008, ISO 1795.2000, IDT)

GB/T 17783 Preparation of chemical test samples and test specimens for vulcanized rubber or thermoplastic rubber (GB/T 17783-2019,

ISO 4661-2.2018, MOD)

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Sample

Select the part that represents the entire material for analysis.

3.2 Sample testportion

Used as the actual material for analysis.

3.3 Controlsample

Samples with known total nitrogen or total sulfur content.

Note. Analyze simultaneously with the sample. […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

ISO 1795.2000 · ISO 4661

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