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Cobalt Sulfate Heptahydrate

Cobalt Sulfate Heptahydrate

Cobalt sulfate heptahydrate, cobalt sulphate heptahydrate
Synonyms:  Cobalt sulfate 7-hydrate, sulfuric acid cobalt (2+) salt heptahydrate, Cobalt monosulfate heptahydrate
Formula: CoSO4.7H2O
CAS NO.: 10026-24-1
M.W.: 281.10
Melting point: 206.2 ° F (NTP, 1992)
Water solubility: appreciable
Physical description: Pink to red monoclinic prismatic crystals or red granular solid. Odorless. Become cobalt sulfate anhydrous at 788°F. Cobalt sulphate heptahydrate dehydrates on heating (41.5℃) to the cobalt sulfate hexahydrate and to the cobalt sulfate monohydrate at 71℃.
Specification: (%)

Items

Technical specification (%)

Cobalt sulfate heptahydrate 21%

Cobalt sulphate heptahydrate 20%

Co

≥21

≥20

Ni

≤0.0008

≤0.001

Fe

≤0.0005

≤0.001

Cu

≤0.0003

≤0.001

Mn

≤0.0005

≤0.001

Zn

≤0.0003

≤0.001

Ca

≤0.001

≤0.002

Mg

≤0.001

≤0.001

Na

≤0.0015

≤0.002

Pb

≤0.001

≤0.001

As

≤0.001

≤0.001

Cl-

≤0.01

≤0.02

Si

≤0.0025

≤0.01

Water insoluble

≤0.01

≤0.02

Safe handling: Wear safety glasses. Work in a well ventilated area. Ensure that you do not inhale the dust from cobalt compounds.
Application: Cobalt sulfate heptahydrate 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) sulfate heptahydrate is used in storage batteries and electroplating baths, sympathetic inks, and as an additive to soils and animal feeds.

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