Zinc Dialkyl Dithiophosphate Lubricant Additive (ZDDP) is used as suitable lubricant additive for engine oil. It is used along with dispersant, detergent and acid neutralizing additives. This additive has stable hydrolytic attributes and thermal characteristics. Available in viscous liquid form, Zinc Dialkyl Dithiophosphate Lubricant Additive (ZDDP) has molar mass of 400 to 2000 Dalton range. This additive has toxic effect on aquatic animals and plants. Good anti wear performance, precise formulation and long storage life are some of its key aspects.