Strontium stearate

Chemical compound From Wikipedia, the free encyclopedia

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

Quick facts Names, Identifiers ...
Strontium stearate
Names
Other names
strontium distearate, strontium dioctadecanoate[1][2]
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/2C18H36O2.Sr/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: FRKHZXHEZFADLA-UHFFFAOYSA-L
  • CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Sr+2]
Properties
Sr(C18H35O2)2
Molar mass 654.56
Appearance white powder
Density 1.11 g/cm3
Melting point 130–140 °C (266–284 °F; 403–413 K)
insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Synthesis

A reaction of strontium hydroxide with stearic acid.[5]

Physical properties

The compound forms white powder. Insoluble in alcohol, soluble (forms gel) in aliphatic and aromatic hydrocarbons.[6]

Uses

Strontium stearate is used in grease and wax compounding.[6][7]

It is also used as a lubricant to improve the flow characteristics of polyolefin resins.[8]

References

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