ZINC SULPHATE Heptahydrate – ACS
   
CAS NO :7446-20-0                FORMULA       : ZnSO4.7H2O
GRADE     : ACS FORMULA WT   : 287.58
   
TEST SPECIFICATION
Description White crystalline powder
Test solution (10% aq)                                            Complies
Assay Min 99.0-103.0%
pH (5% aq sol) 4.4-6.0
Insoluble matter: max. 0.01%
Chloride: max 0.0005%
Nitrate: max. 0.002%
Ammonia: max. 0.001%
Calcium (Ca) : max.0.005%
Iron: max 0.001%
Lead (Pb): max 0.003%
Magnesium (Mg): max. 0.005%
Manganese (Mn): max. 0.0003%
Potassium (K): max.0.01%
Sodium (Na): max.0.05%

 

ZINC SULPHATE Heptahydrate – AR
   
CAS NO :7446-20-0                FORMULA       : ZnSO4.7H2O
GRADE     : AR FORMULA WT   : 287.58
   
TEST SPECIFICATION
Description White crystalline powder
Test solution (10% aq)                                            Complies
Assay Min 99.5-100.5%
pH (5% aq sol) 5.2-6.0
Insoluble matter: Max 0.01%
Chloride: Max 0.001%
Nitrate: Max 0.001%
Arsenic (As): Max 0.0001%
Ammonium: Max 0.001%
Cadmium (Cd): Max 0.001%
Calcium (Ca): Max 0.005%
Iron: Max 0.0005%
Lead (Pb): Max 0.001%
Manganese (Mn): Max 0.0003%
Potassium (K): Max 0.005%
Sodium (Na): Max 0.005%

 

ZINC SULPHATE Heptahydrate – LR
   
CAS NO :7446-20-0                FORMULA       : ZnSO4.7H2O
GRADE     : LR FORMULA WT   : 287.58
   
TEST SPECIFICATION
Description White crystalline powder
Test solution (10% aq)                                            Complies
Assay Min 99.0-102.0%
pH (5% aq sol) 4.0-6.0
Chloride: max 0.001%
Iron: max 0.001%
Heavy metal: max 0.001%

 

ZINC SULPHATE Heptahydrate – BP
   
CAS NO :7446-20-0                FORMULA       : ZnSO4.7H2O
GRADE     : BP FORMULA WT   : 287.58
   
TEST SPECIFICATION
Description white to almost white crystalline powder or colourless transparent crystals, effloresccent
Solubility                                            Very soluble in water , practically insoluble in ethaol (96%)
Identification Complies
Assay(ODB) min 99.0-104.0%
pH (5%) 4.4-5.6
Appearance of solution Passes
Chloride Max 0.03%
Iron Max 0.01%
Lead Max 0.001%

 

ZINC SULPHATE Heptahydrate – USP
   
CAS NO :7446-20-0                FORMULA       : ZnSO4.7H2O
GRADE     : USP FORMULA WT   : 287.58
   
TEST SPECIFICATION
Description colourless transparent prisms or small needles.   May occure as a white granular crystallinje powder, is odourless & is efflorescent in dry air. Its solutions are acid to litmus
Solubility                                            Very soluble in water,freely soluble in glycerine insoluble in alcohol   
Identification Complies
Assay (As ZnSO4 55.6-61.0%
             (As ZnSO4. H2O) 99.0-108.7%
Arsenic Max 0.0014%
Lead Max 0.002%
Alkalies & alkaline earth Max 0.9%
Acidity Passes