Chemistry:Cobalt(II) stearate

Cobalt(II) stearate

Names
Other names Cobaltous stearate, cobalt distearate, cobalt dioctadecanoate, cobalt(2+) octadecanoate
Identifiers
CAS Number	1002-88-6 Y
3D model (JSmol)	Interactive image
ChemSpider	4953647
EC Number	213-694-7
PubChem CID	6451168
UNII	000J930IO1
CompTox Dashboard (EPA)	4029729
InChI InChI=1S/2C18H36O2.Co/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: AMFIJXSMYBKJQV-UHFFFAOYSA-L
SMILES CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Co+2]
Properties
Chemical formula	C36H70CoO4
Molar mass	625.46
Appearance	violet substance
Density	1.7 g/cm3
Melting point	109 °C (228 °F; 382 K)
Boiling point	359.4 °C (678.9 °F; 632.5 K)
Solubility in water	insoluble
Hazards
GHS pictograms
GHS Signal word	Danger
GHS hazard statements	H315, H317, H319, H334, H351, H411
GHS precautionary statements	P261, P264, P272, P273, P280, P284, P302+352, P304+340, P305+351+338, P318Category:GHS errors, P321, P332+317Category:GHS errors, P333+313, P337+317Category:GHS errors, P342+316Category:GHS errors, P362+364Category:GHS errors, P391, P405, P501
Flash point	191 °C (376 °F; 464 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

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Cobalt(II) stearate is a metal-organic compound, a salt of cobalt and stearic acid with the chemical formula C₃₆H₇₀CoO₄. The compound is classified as a metallic soap, i.e. a metal derivative of a fatty acid.

Synthesis

An exchange reaction of sodium stearate and cobalt dichloride:

[math]\displaystyle{ \mathsf{ CoCl_2 + 2C_{17}H_{35}COONa \ \xrightarrow{}\ Co(C_{17}H_{35}COO)_2\downarrow + 2NaCl } }[/math]

Physical properties

Cobalt(II) stearate forms a violet substance, occurring in several crystal structures.

Insoluble in water.

Uses

Cobalt(II) stearate is a high-performance bonding agent for rubber. The compound is suitable for applications in natural rubber, cisdene, styrene-butadiene rubber, and their compounds to bond easily with brass- or zinc-plated steel cord or metal plates as well as various bare steel, especially for bonding with brass plating of various thicknesses.