... 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 ... capacitor, preparation of electron equipment detergent. 7. In other aspects: as analysis reagent, raw material of ...