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BS 6630:1985

BS 6630:1985

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Method for identification of antidegradants in rubber and rubber products by thin layer chromatography

Available format(s)

Hardcopy , PDF

Superseded date

06-20-2022

Language(s)

English

Published date

08-30-1985

Publisher

British Standards Institution

Two methods are described for the detection and identification of antidegradants in raw rubber, unvulcanized compounded rubber or rubber products.

1.1 This International Standard describes two methods for the detection and identification, by thin layer chromatography, of antidegradants (antioxidants, antiozonants and stabilizers), which may be present in raw rubber, unvulcanized compounded rubber, or rubber products.

Method A is a simplified method, based on a single solvent system, which provides for the identification of known materials and may be used to check the presence or absence of a particular antidegradant which should be present.

Method B is a more detailed method, using additional solvents and sprays, which enables a greater degree of separation of the spots to be obtained and therefore may be used to detect and identify an unknown antidegradant.

1.2 Antidegradants to which these methods are applicable include phosphited polyalkyl phenols, substituted bisphenols, secondary amines, substituted cresols and substituted p-phenylenediamines. Examination for other types of antidegradants is possible, provided that the requirement of 11.1 is met.

Committee
PRI/22
DevelopmentNote
Also numbered as ISO 4645 Supersedes 78/52476 DC (09/2005) Reviewed and confirmed by BSI, September 2010. (08/2010)
DocumentType
Standard
Pages
12
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS 7825-3.11:1998 Calibration of rubber and plastics test equipment. Calibration schedules Rubber polymer identification and chemical properties

BS 1673-2:1967 Methods of test for raw rubber and unvulcanized compounded rubber Chemical analysis of raw natural rubber

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Hardcopy - English
PDF - English
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