Molecular formula： Zn（C17H35COO）2 Physico-chemical properties White soft powder, with slight characteristic odor; neutral reaction, combustible, innoxious, specific density 1.095, insoluble in water, ethanol and ethyl oxide, soluble in hot ordinary solvent and acid, It becomes colloid substance when heated and dissolved, can be decomposed steric acid and corresponding by dilute acid, soluble in benzene, good adhesion to skin, lubricating. Direction for use Too much use would decompose PVC and generate black points. The product could have the performance of resistance to original coloration by synthesis white zinc sulfate with the sulphide in the atmosphere. It is widely used together with other soap products.