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Strontium stearate
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3D model (JSmol)
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| 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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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]
Synthesis
[edit]A reaction of strontium hydroxide with stearic acid.[5]
Physical properties
[edit]The compound forms white powder. Insoluble in alcohol, soluble (forms gel) in aliphatic and aromatic hydrocarbons.[6]
Uses
[edit]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
[edit]- ^ "CAS 10196-69-7 Strontium stearate - Alfa Chemistry". alfa-chemistry.com. Retrieved 28 February 2023.
- ^ "Strontium Stearate - CAS No. 10196-69-7 - World Metal, Stafford TX". worldmetalllc.com. Retrieved 28 February 2023.
- ^ "STRONTIUM STEARATE - Optional[FTIR] - Spectrum - SpectraBase". spectrabase.com. Retrieved 28 February 2023.
- ^ "Stearic acid, strontium salt". National Institute of Standards and Technology. 17 October 2019. Retrieved 28 February 2023.
- ^ Schreck, Albert E.; Arundale, Joseph C. (1959). Strontium: A Materials Survey. U.S. Government Printing Office. p. 27. Retrieved 28 February 2023.
- ^ a b 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.
- ^ 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) - ^ Flick, Ernest W. (22 October 2013). Plastics Additives, Volume 2. William Andrew. p. 206. ISBN 978-0-8155-1863-1. Retrieved 28 February 2023.
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