Physical and chemical properties: Molecular Formula: ZnS+BaSO4 Appearance: white powder Odor: odorless CAS No: 1345-05-7 HS No.: 3206421000 Solubility:insoluble in water,and does not react with hydrogen sulfide and the lye.Resulting from decomposition of hydrogen sulfide gas when they encounter acid solution. Use: Pigments, coatings, light colored paints, rubber, printing ink, varnished cloth, oil cloth, paper making, leather, enamel and tan, etc. 25kg/bag.