LdSt has good heat stability and fine lubricity. Possesses excellent synergistic effects with Cd and Ba stabilizers. It has toxicity and not be durable to sulfide. It can be used for the opaque PVC products, and the referenced dosage is no more than 2% in use. Quality standard of the product: Appearance: white powder. Content of Lead: 27.5?.5% Melting point: >=103-110centimeters Heating loss: <=0.3% Dissociate fatty acid: <=0.8%