... metal. 2. In pharmaceutical industry: used in Tetracycline, Oxytetracycline, Phenobarbital, and Borneol, etc. 3. In Light industry: polishing for ... Marble, rust-remover, bleaching, dirt-remover, leather-processing, wood, and aluminium products etc. 4. In ... mordant for fast pigment dyestuff. 5. In organic synthetic: used in 2133 resin, Urea-formaldehyde molding powder, ...