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Chemical compound From Wikipedia, the free encyclopedia
Lead stearate is a metal-organic compound, a salt of lead and stearic acid with the chemical formula C
36H
70PbO
4.[1] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.[2] The compound is toxic.
Names | |
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Other names
Lead(2+) octadecanoate, lead(II) stearate, lead distearate | |
Identifiers | |
3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.012.733 |
EC Number |
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PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
C 36H 70PbO 4 | |
Molar mass | 774.14 |
Appearance | White powder |
Density | 1.4 g/cm3 |
Melting point | 115.7 °C (240.3 °F; 388.8 K) |
Boiling point | 359.4 °C (678.9 °F; 632.5 K) |
Slightly soluble | |
Hazards | |
GHS labelling: | |
Danger | |
H302, H332, H360, H373 | |
P260, P261, P281, P304, P340, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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The compound can be prepared by reacting stearic acid, lead(II) oxide, and a catalyst acetic acid.[3]
Also, an exchange reaction between lead(II) acetate and sodium stearate:
White powder with a slight fatty odor. Sinks in water.[4] Hygroscopic in air.
The compound is used as a drier in oil paints and varnishes to speed the polymerization and oxidation processes. Also used as a lubricant and stabilizer in vinyl polymers and as a corrosion inhibitor in petroleum products.[5][6][7]
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