BS ISO 7781:2017
Current
The latest, up-to-date edition.
Styrene-butadiene rubber, raw. Determination of soap and organic-acid content
Hardcopy , PDF
English
28-11-2017
Important note : Users cannot be edited or removed once added to your Multi user PDF.| Committee |
PRI/50
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| DevelopmentNote |
Supersedes 00/121312 DC and BS 7164-9(1997). (02/2002) Supersedes 06/30160034 DC. (06/2008) Supersedes 17/30351848 DC. (12/2017)
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| DocumentType |
Standard
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| Pages |
20
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| PublisherName |
British Standards Institution
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| Status |
Current
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| Supersedes |
This document specifies three methods for the determination of the soap and organic-acid content of raw styrene-butadiene rubber (SBR).
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Method A is the titration method using indicator reagent.
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Method B is the titration method using an automatic potentiometric titrator.
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MethodC 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.
| Standards | Relationship |
| ISO 7781:2017 | Identical |
| ISO 385:2005 | Laboratory glassware — Burettes |
| 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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