... toxic gases; soluble in strong acids/alkalis. Be used in water purifier, fluorides, dyers, pharmacy, building materials etc.Super-fine ... retarding additive of plastic, rubber, resin etc.; basic materials in paper making, coatings and toothpaste; carriers of catalysts. ... Aluminium HydroxideHigh whiteness. Be used as the retardant agent in plastic, latex industries, paper making ,paints, pigments, ...