Cobalt Sulfate

Origin: Taiwan
CAS Number: 10124-43-3
HS Code: 28332990

IUPAC Name: cobalt(2+) sulfate
Molecular Formula: CoSO4
Molecular Weight (g/mol): 154.9900
Synonyms & Trade Names: Cobalt sulfate; Cobalt(II) sulfate; CoSO4
Purity / Assay (%): 98% min
Grade / Quality Level: Technical Grade

Physical Form: Solid
Concentration: Pure substance
Appearance / Color: White to off-white solid
Odor: Odorless
Melting Point (°C): 735.0000
Density (g/cm³): 3.7100
Solubility in Water: Freely soluble
Signal Word: Danger
UN Number: 3077
GHS Hazard Class: Acute toxic; CMR; Skin sensitizer
H-Statements: H302|H317|H331|H341|H350i|H360F|H410
P-Statements: P201|P260|P271|P272|P273|P280|P308+P313
REACH Status: Registered
Drug Precursor Status: Non-precursor
Storage Class (GHS): 6.1
Storage Conditions: Cool, dry; separate from incompatibles

Technical Document

Brief Overview
Cobalt sulfate group of compounds include any of the inorganic substances with the formula CoSO4(H2O)x. Most often however cobalt sulfate refers to the hexa- or heptahydrates CoSO4.6H2O or CoSO4.7H2O, respectively. Appearance-wise, the heptahydrate is a red solid. It is soluble in water and methanol. It is also odourless. Because cobalt sulfate has an odd number of electrons, its salts are paramagnetic in nature.
Manufacturing Process
Nowadays, the most common method of manufacturing cobalt sulfate on a large scale and in large quantities is to treat cobalt oxide with sulfuric acid. Another method uses cobalt instead of its oxide. The following are the chemical reactions: Co + H2SO4 + 7 H2O → CoSO4(H2O)7 + H2 CoO + H2SO4 + 6 H2O → CoSO4(H2O)7