Physical and chemical properties: Molecular Formula: ZnS+BaSO4 Appearance: white power 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 form decomposition of gydrogen sulfide gas when the encounter acid solution. Uses: Pigments, coatings, light colored paints, rubber, printing ink, varnished cloth, oil cloth, paper making, leather, plastic, enamel and tan, etc. 25kg/bag.