S P E C I F I C A T I O N S

ZINC SULFATE 7HY ACS

Synonyms:			Sulfuric acid, zinc salt(1:1) heptahydrate; zinc vitriol,
				Heptahydrate; zinc sulfate, heptahydrate

CAS No:					7446-20-0

Formula:					ZnSO4 * 7H2O

F.W.:						287.56

Description:					Colorless efflorescent crystals

Assay:						99.0 – 103.0 %

pH of a 5% solution @ 25°C:		4.4 - 6.0

Insoluble matter:				0.01 % maximum

Chloride (Cl):				5 ppm maximum

Nitrate (NO3):				0.002 % maximum

Ammonium (NH4):				0.001 % maximum

Calcium (Ca)					0.005 % maximum

Iron (Fe)					0.001 % maximum

Lead (Pb)					0.003 % maximum

Magnesium (Mg)				0.005 % maximum

Manganese (Mn)				3 ppm maximum

Potassium (K)				0.01 % maximum

Sodium (Na)					0.05 % maximum

Effective: 12/15/08