Polymer Additives

Zinc Stearate

Zinc Stearate is a white, hydrophobic metallic soap with excellent lubrication, release, and water-repellent properties. It is widely used as an internal lubricant and mold-release agent in plastic and rubber processing, as well as an essential pigment dispersant in the coatings industry. Our high-purity grade ensures consistent flow and non-stick performance in demanding manufacturing environments.

Technical Specifications

Chemical FormulaZn(C18H35O2)2
CAS Number557-05-1
AppearanceFine, soft, white powder
Zinc Content10.5% – 11.5%
Free Fatty Acid≤1.0%
Loss on Drying≤0.5%
StorageStore in a cool, dry place; keep away from open flames

Recommended Applications

  • Plastics Industry: Acts as a vital mold-release agent and lubricant for PVC, polystyrene, and polyolefins, improving mold flow and surface finish.
  • Rubber Manufacturing: Prevents "sticking" during the processing of rubber compounds and acts as a mold lubricant.
  • Coatings & Inks: Functions as a flatting agent and pigment dispersant, enhancing the texture and durability of paints and lacquers.
  • Powder Metallurgy: Used to reduce friction during the compression of metal powders, ensuring high-precision finished parts.