BS 6630:1985
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Method for identification of antidegradants in rubber and rubber products by thin layer chromatography
Hardcopy , PDF
20-06-2022
English
30-08-1985
Important note : Users cannot be edited or removed once added to your Multi user PDF.Two methods are described for the detection and identification of antidegradants in raw rubber, unvulcanized compounded rubber or rubber products.
| 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Superseded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 |
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.
| 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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