Industrial Cobalt Sulphate Heptahydrate Crystals, 21% Co, for Battery Cathode and Chemical-Reagent Enquiries
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ColorRed-brownPhysical formCrystalline
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CAS No.10026-24-1PurityCo 21%
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AppearanceRed-brownApplicationcobalt salt, Lithium battery, Electroplating, Catalyst, Pigment and ceramic
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ClassificationSulphateEINECS No.600-050-9
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Grade StandardIndustrial GradeMolecular FormulaCoSO4*7H2O
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Other NamesCobalt Sulfate Heptahydrate, Cobalt sulfate, Sulfuric acid cobalt saltTypeCobalt Sulfate
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Hs code28332990SolubilityEasily soluble in water
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pH Value3.5 -5.5 (5% solution)DensityApprox. 1.95 g/cm³
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Molecular Weight281.10Packing25kg bag or 1000kg jumbo bag
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StorageStore in a cool, dry place, away from moistureShelf Life2 Years
Battery-cathode and chemical-reagent projects should define their material requirements independently. This industrial cobalt sulfate heptahydrate is described with a crystal designation and red-brown appearance. The actual model TY-Cobalt Sulfate Heptahydrate has formula CoSO4*7H2O and stated elemental cobalt content of 21%.
Distinguish the cobalt assay from an end-use grade
Obtain current sample identity and constituent analysis on the reporting basis needed by the project. A cobalt percentage does not establish the purity of the full hydrated salt. Neither an industrial designation nor a reagent-use label independently demonstrates battery-grade or reagent-grade qualification.
Keep the material-pH concentration in the comparison
Reported pH values span 3.5–5.5 under a stated 5% solution condition. Request the preparation method and preserve that concentration when comparing reports. The result describes a conditioned material test rather than an instruction for a cathode process or reagent formulation.
Review crystal and physical information for the intended trial
- Density qualification
- The value is stated as approximately 1.95 g/cm³; ask for the test basis.
- Solution behaviour
- Easy water solubility is reported qualitatively, without a dissolution-time specification.
- Storage instruction
- A cool, dry place away from moisture is advised for the supplied material.
Agree actual cathode or reagent acceptance criteria before assessing the sample, and keep current technical and handling records with the trial observations. Electroplating, catalyst, pigment, ceramic and other cobalt-salt projects need separate qualification against their own requirements.



