GB/T 7766-2000
Rubber-Determination of carbon black content-Nitric acid digestion method (English Version)

Standard No.

GB/T 7766-2000

Language

Chinese, Available in English version

Release Date

2000

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2009-02

Replace By

GB/T 7766-2008

Latest

GB/T 7766-2008

Scope

This standard specifies the method for the determination of carbon black content in rubber by nitric acid digestion. This method is applicable to "R" rubbers containing unsaturated carbon chains. This method is also applicable to other rubbers that can be degraded by nitric acid into fragments soluble in water, acetone or chloroform, but it must be determined after verification tests on known rubber materials.

GB/T 7766-2000 history

• 2008 GB/T 7766-2008 Rubber products.Test methods for chemical analysis
• 2000 GB/T 7766-2000 Rubber-Determination of carbon black content-Nitric acid digestion method