Zinc Sulphate Heptahydrate

Zinc Sulphate Heptahydrate Molecular Formula: ZnSO4.7H2O Molecular Weight: 287.54 Property: Colorless, orthorhombic system, prism crystal, its relative density is 1.957 and melting point is 100°C, easily soluble in water (it is in the state of 96.5g/100ml water at 20°C and in the state of 663.6g/100ml at 100°C) Quality Standard:Industrial Grade (HG/T2326-92)Feed Grade (HG/2934-2000)Content (ZnSO4.7H2O)≥98.0%Content (ZnSO4.7H2O)≥98.0%Zinc (Zn)≥22.51%Zinc (Zn)≥22%PH Value (50g/l Solution)≥3.0Arsenic (As)≥0.0005%Chloride≤0.2%Lead (Pb)≤0.0001%Lead (Pb)≤0.002%Cadmium (Cd)≤0.002%Manganese (Mn)≤0.001%Fineness (Passing Through 250um Screen Cloth≥95%Cadmium (Cd)≤0.002%——