Rubber & Plastics

Metallic stearates are compounds of long-chain fatty acids with metals of different valencies. The most important metallic stearates, in terms of quantity, are the metallic stearates of aluminum, calcium, magnesium, and zinc. Applications are widely varied. They are used for their lubricating properties, separating properties, water repellence, gelling capacity, stabilizing effect, foam inhibition, acid scavenging effect, and more.

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Zinc Stearate

shutterstock_519137797Zinc stearate is a fine, creamy-white powder. It is the zinc salt of stearic acid. It is insoluble in water, alcohol and ether. It dissolves well in aromatic compounds like benzene and chlorinated hydrocarbons on heating. In fact, zinc stearate is strongly hydrophobic.

Zinc stearate is widely used as a binder, release agent, lubricant and vulcanization activator in the rubber and tire industry.

Zinc Stearate
Chemical FormulaZn (C17 H35COO3)2
AppearanceFine, white powder
Molecular weight631
Specific gravity1.095
Moisture≤ 1.0%
Melting point115 - 125 °C
Particle Size≥ 95.0% through 325 mesh
Free Fatty Acid≤ 1.0%
Zinc stearate is packaged in 25 kg lined kraft paper bags. Super sacks and custom packaging are also available upon request.