ISO 7781:2017
Current
The latest, up-to-date edition.
Styrene-butadiene rubber, raw — Determination of soap and organic-acid content
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English
16-11-2017
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ISO 7781:2017 specifies three 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 automatic potentiometric titrator.
- Method C is the back titration method using an automatic potentiometric titrator.
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.
| DevelopmentNote |
Supersedes ISO/DIS 7781. (11/2017)
|
| DocumentType |
Standard
|
| Pages |
12
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| BS ISO 7781:2008 | Identical |
| NEN ISO 7781 : 2017 | Identical |
| BS ISO 7781:2017 | Identical |
| BS 7164-9:1997 | Identical |
| GOST ISO 7781 : 2013 | Identical |
| UNI ISO 7781 : 2008 | Identical |
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| ISO 1042:1998 | Laboratory glassware — One-mark volumetric flasks |
| ISO 648:2008 | Laboratory glassware — Single-volume pipettes |
| ISO 1795:2017 | Rubber, raw natural and raw synthetic — Sampling and further preparative procedures |
| ISO 4799:1978 | Laboratory glassware — Condensers |
| ISO/TR 9272:2005 | Rubber and rubber products Determination of precision for test method standards |
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