Lead stearate

Lead stearate
Names
Other names
  • Lead(2+) octadecanoate
  • lead(II) stearate
  • lead distearate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.012.733
EC Number
  • 214-005-2
UNII
UN number UN 2291
  • InChI=1S/2C18H36O2.Pb/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
    Key: UQLDLKMNUJERMK-UHFFFAOYSA-L
  • CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Pb+2]
Properties[1]
Pb(C18H35O2)2
Molar mass 774.2 g·mol−1
Appearance White powder
Density 1.4 g/cm3
Melting point 100 °C (212 °F; 373 K)
Insoluble
Solubility Soluble in hot ethanol.
Hazards
GHS labelling:[2]
GHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
Danger
H302+H332, H360, H373, H410
P270, P273, P280, P301+P312, P304+P340, P308+P313
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Lead stearate is a metal-organic compound, a salt of lead and stearic acid with the chemical formula Pb(C18H35O2)2.[3] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.[4] The compound is toxic.

Synthesis

The compound can be prepared by reacting stearic acid, lead(II) oxide, and a catalyst acetic acid.

2 C17H35COOH + PbO → Pb(C18H35O2)2 + H2O

It may also be prepared via an exchange reaction between lead(II) acetate and sodium stearate:

Pb(C2H3O2)2 + 2 NaC18H35O2 → Pb(C18H35O2)2↓ + 2 NaC2H3O2

Uses

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]

References

  1. ↑ Haynes, William M., ed. (2016). CRC Handbook of Chemistry and Physics (97th ed.). Boca Raton, Florida: CRC Press. pp. 4–69. ISBN 9781498754293.
  2. ↑ "SDS - Lead(II) Stearate" (pdf). www.carlroth.com. Carl Roth. 16 September 2025. p. 2. Retrieved 22 August 2026.
  3. ↑ "Lead Stearate". American Elements. Retrieved 7 March 2023.
  4. ↑ "T3DB: Lead stearate". t3db.ca. Retrieved 7 March 2023.
  5. ↑ "Lead Stearate". Waldies Co. Ltd. Retrieved 7 March 2023.
  6. ↑ Encyclopedia of Chemical Technology: Fuel resources to heat stabilizers. Wiley. 1991. p. 1074. ISBN 978-0-471-52669-8.
  7. ↑ Titow, M. V. (6 December 2012). PVC Technology. Springer Science & Business Media. p. 269. ISBN 978-94-009-5614-8. Retrieved 7 March 2023.
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