Cobalt(II) stearate
Names
Other names
Cobaltous stearate, cobalt distearate, cobalt dioctadecanoate, cobalt(2+) octadecanoate
[ 1]
Identifiers
ChemSpider
ECHA InfoCard 100.012.449
EC Number
UNII
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
CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Co+2]
Properties
C36 70 4
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)
insoluble
Hazards
GHS labelling
Danger
H315 , H317 , H319 , H334 , H351 , H411
P261 , P264 , P272 , P273 , P280 , P284 , P302+P352 , P304+P340 , P305+P351+P338 , P318 , P321 , P332+P317 , P333+P313 , P337+P317 , P342+P316 , P362+P364 , 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).
Chemical compound
Cobalt(II) stearate is a metal-organic compound , a salt of cobalt and stearic acid with the chemical formula C36 70 4 .[ 2] [ 3] metallic soap , i.e. a metal derivative of a fatty acid .[ 4]
Synthesis
An exchange reaction of sodium stearate and cobalt dichloride :
C
o
C
l
2
+
2
C
17
H
35
C
O
O
N
a
→
C
o
(
C
17
H
35
C
O
O
)
2
↓ ↓ -->
+
2
N
a
C
l
{\displaystyle {\mathsf {CoCl_{2}+2C_{17}H_{35}COONa\ {\xrightarrow {}}\ Co(C_{17}H_{35}COO)_{2}\downarrow +2NaCl}}}
Physical properties
Cobalt(II) stearate forms a violet substance, occurring in several crystal structures.
It is insoluble in water.[citation needed
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.[ 5]
References
Salts and covalent derivatives of the
stearate ion
Cobalt(I) Cobalt(II) Cobalt(0,III) Cobalt(II,III) Cobalt(III) Cobalt(III,IV) Cobalt(IV) Cobalt(V)
