Lanthanum stearate

Lanthanum stearate
Names
	Other names Lanthanum(III) stearate; lanthanum(3+) octadecanoate
Identifiers
CAS Number	14741-67-4 ;
3D model (JSmol)	Interactive image;
EC Number	238-806-1;
PubChem CID	129650238;
	InChI InChI=1S/3C18H36O2.La/c31-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h32-17H2,1H3,(H,19,20); Key: YEPVBQTYBRSNRS-UHFFFAOYSA-N;
	SMILES CCCCCCCCCCCCCCCCCC(=O)O.CCCCCCCCCCCCCCCCCC(=O)O.CCCCCCCCCCCCCCCCCC(=O)O.[La];
Properties
Chemical formula	C; 54H; 105LaO; 6
Molar mass	989.3
Appearance	white powder
Solubility in water	insoluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lanthanum stearate is a metal-organic compound, a salt of lanthanum and stearic acid with the chemical formula La(C₁₈H₃₅O₂)₃.^[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]

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

^ 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.
^ 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.
^ "Stearate". Romanian Journal of Physics. Editura Academiei Române: 520. 1995. Retrieved 3 March 2023.
^ 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.
^ "Lanthanum Stearate-BEYONDCHEM". beyondchem.com. Archived from the original on 19 August 2013. Retrieved 2 March 2023.