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BS ISO 7781:2017

BS ISO 7781:2017

Current

Current

The latest, up-to-date edition.

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

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-11-2017

Publisher

British Standards Institution

This document 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.

  • 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.

Committee
PRI/50
DevelopmentNote
Supersedes 00/121312 DC and BS 7164-9(1997). (02/2002) Supersedes 06/30160034 DC. (06/2008) Supersedes 17/30351848 DC. (12/2017)
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Current
Supersedes

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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