Lead stearate

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A white powder that is used as a Drier in oil paints and varnishes to speed the polymerization and oxidation processes. Lead stearate is also used as a lubricant during extrusion, as a stabilizer in vinyl polymers and as a corrosion inhibitor in petroleum products.

Synonyms and Related Terms

stearic acid lead salt


  • Toxic by inhalation or ingestion.
  • Absorbed by the skin. Skin contact may cause irritation or ulcers.
  • Carcinogen, teratogen, suspected mutagen.
  • EChemi: SDS

Physical and Chemical Properties

Soluble in hot ethanol. Insoluble in water.

Composition Pb(C18H35O2)2
CAS 1072-35-1
Melting Point ~125 C
Density 1.4 g/ml

Resources and Citations

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry # 5442