... raw materials, which is extensively used in pesticide leather, dyestuff, medicine and rubber industries.(1) Medicine ... remover, bakelite, pickled plate, etc.(4) Leather industry: leather tanning agent, deliming agent, and neutralizer.(5) Rubber industry: natural ... printing mordant, fiber and paper staining agent, processing agent, plasticizing agent, food antistaling agent, animal fodder additive, etc. ...