Zinc stearate

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Soft, fine, white, waxy powder. Zinc stearate normally occurs as a mixture of the zinc oxide with zinc salts of stearic and palmitic acids. It is used in cosmetic and lacquer as a flatting agent. It is also used as a lubricant on the surface of rubbers and as a release agent on plastic molds. Zinc stearate has also found uses as a waterproofing agent for concrete, rock wool, paper, and textiles.

Synonyms and Related Terms

octadecanoic acid zinc salt



Other Properties

Soluble in benzene. Insoluble in water, alcohol, ether.

Composition ZnC36H70O4
CAS 557-05-1
Melting Point 130
Density 1.1
Molecular Weight mol. wt. = 632.33

Hazards and Safety

Combustible. Flash point = 277C

LINK: International Chemical Safety Card

Sources Checked for Data in Record

  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 9965

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