Specification for lac and shellac. Bleached lac
Summary:
Gives requirements for two grades differing in matter insoluble in hot alcohol, matter soluble in water, ash and wax content. Definitions, colour, copals, rosin, free chlorine content, arsenic and lead content tests are all specified.
Pages:
36
BS 7897-3:1997 International Equivalent:
ISO 57:1975
BS 7897-3:1997 Key Phrases:
Lac, Resins (natural), Coatings, Varnishes, Lacquers, Volatile matter determination, Insoluble matter determination, Chlorine, Peroxides, Ash determination, Determination of content, Waxes, Sampling methods, Specimen preparation, Testing conditions, Test equipment, Design, Dimensions, Rosin, Colour tests, Solvent extraction methods, Acid number, Chemical analysis and testing, Acids, Arsenic, Lead, Mathematical calculations
BS 7897-3:1997 Cross References:
BS 410, ISO 565, ANSI Z 23.1, NF X 11-504, DIN 4188-1, DIN 24041, IS 460
BS 7897-3:1997 Replaces:
