BS 7164-14:1996 - Chemical tests for raw and vulcanized rubber - Methods for determination of carbon black content
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1.1 This International Standard specifies a pyrolytic method (A) and two chemical degradation methods (B
and C) for the determination of the carbon black content of rubber.
1.2 Method A is preferred and should be used for the following polymers, except when certain com-
pounding materials such as lead and cobalt salts, graphitic carbon blacks, phenolic and other resins,
bitumen, or cellulose, etc., which cause the formation of a carbonaceous residue during pyrolysis, are pre-
sent:
polyisoprene, natural or synthetic;
- polybutadiene;
styrene-butadiene copolymers;
- butyl rubber;
acrylate rubber,