Lanthanum stearate
Names
Other names
Lanthanum(III) stearate; lanthanum(3+) octadecanoate
Identifiers
3D model (JSmol)
EC Number
  • 238-806-1
  • InChI=1S/3C18H36O2.La/c3*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h3*2-17H2,1H3,(H,19,20);
    Key: YEPVBQTYBRSNRS-UHFFFAOYSA-N
  • CCCCCCCCCCCCCCCCCC(=O)O.CCCCCCCCCCCCCCCCCC(=O)O.CCCCCCCCCCCCCCCCCC(=O)O.[La]
Properties
C
54H
108LaO
6
Molar mass 992.3
Appearance white powder
Density g/cm3
insoluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Lanthanum stearate is a metal-organic compound, a salt of lanthanum and stearic acid with the chemical formula C
54H
108LaO
6.[1][2] The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.

Physical properties

The compound forms a white powder that is soluble in benzene.[3]

Uses

Lanthanum stearate is mainly used as a nucleating agent for plastics degradation and heat stabilizer for PVC.[4][5]

References

  1. ^ Fang, Long; Song, Yihu; Zhu, Xiaonan; Zheng, Qiang (May 2009). "Influence of lanthanum stearate as a co-stabilizer on stabilization efficiency of calcium/zinc stabilizers to polyvinyl chloride". Polymer Degradation and Stability. 94 (5): 845–850. doi:10.1016/j.polymdegradstab.2009.01.024.
  2. ^ Zhang, Yewei; Zhang, Qing; Peng, Yuxing; Wang, Chen; Chang, Xiangdong; Chen, Guoan (5 October 2021). "Preparation and Tribological Properties of Lanthanum Stearate Modified Lubricating Oil for Wire Rope in a Mine Hoist". Materials. 14 (19): 5821. Bibcode:2021Mate...14.5821Z. doi:10.3390/ma14195821. PMC 8510417. PMID 34640222.
  3. ^ "Stearate". Romanian Journal of Physics. Editura Academiei Române: 520. 1995. Retrieved 3 March 2023.
  4. ^ Guo, Xiaojing; Zhao, Shicheng; Xin, Zhong (September 2009). "Influence of lanthanum stearate on the crystallization behavior of isotactic polypropylene". Asia-Pacific Journal of Chemical Engineering. 4 (5): 628–634. doi:10.1002/apj.305.
  5. ^ "Lanthanum Stearate-BEYONDCHEM". beyondchem.com. Archived from the original on 19 August 2013. Retrieved 2 March 2023.
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