rubber accelerator mbt chemical name: 2-mercaptobenzothiazole cas no: 149-30-4 specification: no. item unit specification 1 appearance - light yellow powder grayish white powder 2 initial m. p. (min) c 170. 0 3 loss on drying (max) % 0. 40 4 ash (max) % 0. 30 5 residues on 150m sieve (max) % 0. 10 application: the product is a hemi-ultra accelerator, extensively used in vulcanization of natural and synthetic rubbers. mainly used in manufacture of rubber tire, rubber belts, rubber shoes and other technical rubber goods.