... bright crystals, efflorescent in warm dry air, soluble in water, alcohol but insoluble in water, alcohol but insoluble in benzene, chloroform, ... precipitating and separating function for Rare-earth metal. 2. In light industry: Polishing for marble, rust-remover, bleaching, dirt ... porcelain capacitor, preparation of electron equipment detergent. 5. In other aspects: As analysis reagent, raw material of ...