Cobalt Chloride | Tradeasia International
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Cobalt (II) Chloride

Cobalt (II) Chloride Cobalt (II) Chloride
HS Code
Sky blue powder
Cas No.
Common Names
Cobaltchloride; Cobalt chloride 0.1 M solution; MFCD00010938;
- 800 @ 25kg net PP bag, 25 MT / 20'FCL
  • Ceramics
  • Paints and Coatings
Sub Category

Brief Overview


Cobalt(II) chloride is an inorganic compound of cobalt and chlorine, with the formula CoCl2 and sky blue in colour. It is most commonly supplied as the hexahydrate CoCl2·6H2O, which is pink in colour. Concentrated aqueous solutions are red at room temperature but become blue at higher temperatures. CoCl2·6H2O is deliquescent while the anhydrous salt CoCl2 is hygroscopic.


Manufacturing Process


Hydrated cobalt chloride is manufactured from reaction of cobalt(II) hydroxide or cobalt(II) carbonate with hydrochloric acid according to the reactions below:

CoCO3 + 2 HCl + 5 H2O → Co(H2O)6Cl2 + CO2

Upon heating, the hexahydrate dehydrates. Dehydration can also be effected with trimethylsilyl chloride:

CoCl2•6H2O + 12 Me3SiCl → CoCl2 + 6 (Me3Si)2O + 12 HCl

Painting and printing Industry: Used as a catalyst, printing and dyeing mordant.


Chemical Industry: Used as an analytical reagent.


Other Applications:


  • Used as a necessary catalyst in synthetic fiber industry


  • ceramic pigment, glaze ingredients, cobalt glass curing agent


  • Also used in surface treatment in aluminium as hiding color ink.