Zinc Sulfate Heptahydrate, Reagent A.C.S.

Assay:99.0-103.0%
ZnSO4 · 7H2O
pH of a 5% solution:4.4-6.0 at 25 °C
MAXIMUM ALLOWABLE 
Insoluble matter: 0.01%
Chloride (Cl): 5 ppm
Nitrate (NO3): 0.002%
Ammonium (NH4): 0.001%
Calcium (Ca): 0.005%
Iron (Fe): 0.001%
Lead (Pb): 0.003%
Magnesium (Mg): 0.005%
Manganese (Mn): 3 ppm
Potassium (K): 0.01%
Sodium (Na): 0.05%
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