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

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English

Published date

16-11-2017

Publisher

International Organization for Standardization

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	ISO 7781:2008

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

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