Cobalt (II) sulphate is any of the inorganic compounds with the formula CoSO4(H2O)x. Usually cobalt sulphate refers to the hydrate CoSO4.7H2O, which is one of the most commonly available salts of cobalt.

 

Cobalt (II) sulphate heptahydrate appears as red monoclinic crystals that liquefy around 100°C and become anhydrous at 250°C

 

 

Sr. No.

Test

Specification

1

CAS Number:

10124-43-3

2

Formula

CoSO4

3

Molecular weight

154.996 (ANHYDROUS)

4

Synonym

Cobaltous Sulphate

5

Appearance (color)

Reddish

6

Appearance (form)

crystalline

7

Solubility

Solubile in water

8

Cobalt (%)

20.55 % min

9

Calcium (Ca)

< 0.005 %

10

Chloride

< 0.001 %

11

Iron

< 0.001 %

12

Potassium

< 0.010 %

 

 

 

 

Uses: Hydrated Cobalt (II) Sulphate is used in the preparation of Pigments, as well as in the manufacture of other Cobalt Salts. 

 

Cobalt Pigment is used in Porcelains and Glass. Cobalt (II) sulphate is used in Storage Batteries and Electroplating Baths, Sympathetic Inks, and as an Additive to Soils and Animal Feeds.