Zinc sulfate heptahydrate

grade

ACS reagent

Assay

99%
99.0-103.0% (ACS specification)

form

crystals or chunks

reaction suitability

reagent type: catalyst
core: zinc

impurities

≤0.01% insolubles

pH

4.4-6.0 (25 °C 5%)

solubility

water: soluble 965 g/L at 20 °C

anion traces

chloride (Cl^–): ≤5 ppm
nitrate (NO₃^–): ≤0.002%

cation traces

Ca: ≤0.005%
Fe: ≤0.001%
K: ≤0.01%
Mg: ≤0.005%
Mn: ≤3 ppm
NH₄⁺: ≤0.001%
Na: ≤0.05%
Pb: ≤0.003%

SMILES string

O.O.O.O.O.O.O.[Zn++].[O-]S([O-])(=O)=O

InChI

1S/H2O4S.7H2O.Zn/c1-5(2 3)4;;;;;;;;/h(H2 1 2 3 4);7*1H2;/q;;;;;;;;+2/p-2

InChI key

RZLVQBNCHSJZPX-UHFFFAOYSA-L