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SRPS ISO 7781:2014

Styrene-butadiene rubber, raw — Determination of soap and organic-acid content

Apr 30, 2014
95.99   Withdrawal of Standard   Jan 31, 2019

General information

95.99     Jan 31, 2019

ISS

G045

International Standard

83.040.10  

English  

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Scope

ISO 7781:2008 specifies methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR). Method A is the titration method using indicator reagent. Method B is the titration method using an autotitrator or pH-meter.
The methods depend on the extraction of the organic acids and soaps from the rubber by means of a specified solvent. In practice, therefore, it is convenient to determine both organic-acid and soap contents on separate portions of the same solvent extract. Since the soaps and organic acids present in the rubber are not single chemical compounds, the method gives only an approximate value for the soap and organic-acid content.

Life cycle

PREVIOUSLY

WITHDRAWN
SRPS G.C1.062:1984

WITHDRAWN
SRPS G.C1.063:1984

NOW

WITHDRAWN
SRPS ISO 7781:2014
95.99 Withdrawal of Standard
Jan 31, 2019

REVISED BY

PUBLISHED
SRPS ISO 7781:2019

Related project

Adopted from ISO 7781:2008