ISO 7781:2001
Styrene-butadiene rubber, raw - Determination of soap and organic-acid content
- Standard No.
- ISO 7781:2001
- Release Date
- 2001
- Published By
- International Organization for Standardization (ISO)
- Status
- 2008-04
- Replace By
- ISO 7781:2008
- Latest
- ISO 7781:2017
- Scope
- This International Standard specifies methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR). Method A is suitable for non-oil-extended styrene-butadiene rubbers. Method B is applicable to oil-extended styrene-butadiene rubbers. 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.
ISO 7781:2001 history
- 2017 ISO 7781:2017 Styrene-butadiene rubber, raw - Determination of soap and organic-acid content
- 2008 ISO 7781:2008 Styrene-butadiene rubber, raw - Determination of soap and organic-acid content
- 2001 ISO 7781:2001 Styrene-butadiene rubber, raw - Determination of soap and organic-acid content
- 1996 ISO 7781:1996 Rubber, raw styrene-butadiene - Determination of soap and organic-acid content
- 1986 ISO 7781:1986 Rubber, raw styrene-butadiene; Soap and organic acid content; Determination
