| 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 |
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