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Molecular formula: CoSO4·7H2O
Molecular weight: 281.01
Properties: red crystal with a little brown yellow. Specific gravity is 1.948. Soluble in water and glycerin, slightly soluble in ethyl alcohol.
Uses: in producing cobalt sales, paint driers, additives for alkaline storage battery, and etc.
Standard:
| Specification/item |
工業
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Assay [Co] /%
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≥20
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Water insoluble matter/%
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≤0.02
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Chloride (Cl) /%
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≤0.1
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Nitrate (NO3)
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≤0.1
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Manganese (Mn)
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≤0.05
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Iron (Fe) /%
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≤0.005
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Nickel (Ni)
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≤0.1
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Zinc (Zn)
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≤0.05
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Heavy metal(Cu) /%
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≤0.02
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Packing: plastic woven bag lined with plastic bag, kraft paper bag, or fiber drum, net weight is 25kg.
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