Zinc Stearate


Zinc stearate is a chemical compound . It is a white, powdery substance that is commonly used as a lubricant and release agent in various industries. Zinc stearate has the chemical formula Zn(C18H35O2)2 and is formed through the reaction of zinc oxide with stearic acid.

Zinc stearate has low solubility in water, but it is soluble in organic solvents such as mineral spirits and ethanol. It has several important properties that make it useful in various applications. It is an effective lubricant, which means it can reduce friction between surfaces and improve the flow of materials. Zinc stearate also acts as a release agent, preventing materials from sticking to molds or surfaces during manufacturing processes.
The compound is widely used in the plastics industry as a mold release agent and lubricant for processing polymers, rubber, and elastomers. It helps in preventing adhesion and sticking of the materials to the processing equipment. Zinc stearate is also employed in the production of paints, coatings, and varnishes to improve their flow properties, prevent caking, and provide matting effects.




Off White Powder

Free Fatty Acid

Below 0.5 % (as stearic acid)

Zinc Content (%)

10.5-11.5 % appr

Moisture Content (%)

Below 1%

Melting Point

118-120°C appr

Ash Content

13-14 % appr

Sieve residue on 75 micron

Below 0.3 %


Soluble in hot toluene and xylene