... which is widely used in pesticide, leather,dyestuff, medicine and rubber industries.(1) Medicine Industry: Caffeine, analgin, aminopyrine, aminophylline, cacaine ... bakelite, pickled plate, etc.(4) Leather Industry: Leather tanning agent, deliming agent, and neutralizer.(5) Rubber Industry: Natural rubber polycoagulant.(6) Other: ... agent, animal fodder additive, etc. FORMIC ACID for leather industry