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Cobaltous chloride
Name: ZnSO4·7H is one kind of needle-like or powdery white or slight yellow crystal, density 1.957g/cm2. Uses: used as material of zinc salt, mordant, preservative, insecticide, vomitory, clarifier, auxiliary material, or used in plating, bleaching and electrolysis. Standard: HG/T2326－92 （％）
