Strontium stearate

Strontium stearate
Names
Other names
strontium distearate, strontium dioctadecanoate
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).

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

Synthesis

A reaction of strontium hydroxide with stearic acid.

Physical properties

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

Uses

Strontium stearate is used in grease and wax compounding.

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

References

  1. ↑ "CAS 10196-69-7 Strontium stearate - Alfa Chemistry". alfa-chemistry.com. Retrieved 28 February 2023.
  2. ↑ "Strontium Stearate - CAS No. 10196-69-7 - World Metal, Stafford TX". worldmetalllc.com. Retrieved 28 February 2023.
  3. ↑ "STRONTIUM STEARATE - Optional[FTIR] - Spectrum - SpectraBase". spectrabase.com. Retrieved 28 February 2023.
  4. ↑ "Stearic acid, strontium salt". National Institute of Standards and Technology. 17 October 2019. Retrieved 28 February 2023.
  5. ↑ Schreck, Albert E.; Arundale, Joseph C. (1959). Strontium: A Materials Survey. U.S. Government Printing Office. p. 27. Retrieved 28 February 2023.
  6. 1 2 Lewis, Robert A. (1 April 2016). Hawley's Condensed Chemical Dictionary. John Wiley & Sons. p. 1281. ISBN 978-1-119-26784-3. Retrieved 28 February 2023.
  7. ↑ Modern Technology of Petroleum, Greases, Lubricants & Petro Chemicals (Lubricating Oils, Cutting Oil, Additives, Refining, Bitumen, Waxes with Process and Formulations) 3rd Revised Edition. NIIR Project Consultancy Services. 3 April 2018. p. 177. ISBN 978-93-81039-61-8. Retrieved 28 February 2023.{{cite book}}: CS1 maint: location missing publisher (link)
  8. ↑ Flick, Ernest W. (22 October 2013). Plastics Additives, Volume 2. William Andrew. p. 206. ISBN 978-0-8155-1863-1. Retrieved 28 February 2023.