CASR |
: | 7783-20-2 |
Molecular Formula |
: | (NH4)2SO4 |
Molecular Weight |
: | 132.14 |
| Specifications | |
|---|---|
| Appearance: | Colorless to white crystals or white granules. |
| Solubility: | Freely soluble in water, Insoluble in alcohol. |
| Assay (Alkalimetric): | 99.5% - 100.5% |
| Identification (Ammonium): | The vapour turns moistened red litmus paper to blue and blackens a strip of filter paper moistened with mercurous nitrate. |
| Identification (Sulfate): | A white precipitate should from which should insoluble in hydrochloric acid or nitric acid. |
| Insoluble matter: | NMT 0.001% |
| pH(5% aq soln), at 25°C: | 5.0 - 6.0 |
| Chloride (Cl): | NMT 0.0002% |
| Nitrate (NO3): | NMT 0.0010% |
| Phosphate (PO4): | NMT 0.0005% |
| Heavy metals: | NMT 0.0005% |
| Aluminium (Al): | NMT 0.000075% |
| Arsenic (As): | NMT 0.00002% |
| Calcium (Ca): | NMT 0.001% |
| Cadmium(Cd): | NMT 0.0001% |
| Chromium(Cr): | NMT 0.000075% |
| Copper (Cu): | NMT 0.0001% |
| Iron (Fe): | NMT 0.0002% |
| Magnesium (Mg): | NMT 0.0005% |
| Lead (Pb): | NMT 0.0002% |
| Platinum(Pt): | NMT 0.0001% |
| Zinc (Zn): | NMT 0.0001% |
| Loss on drying at 105°C: | NMT 0.1% |
| Residue on ignition(as SO4): | NMT 0.005% |
| Total aerobic microbial count: | NMT 1000 CFU/gm |
| Total combined yeast and mold count: | NMT 10 CFU/gm |
| Bacterial endotoxin: | NMT 2.5 IU/gm |
| Salmonella: | should be Absent/10gm |
| Escherichia coli: | should be Absent/gm |
| Staphylococcus aureus: | should be Absent/gm |
| Pseudomonas aeruginosa: | should be Absent/gm |
| Candida albicans: | should be Absent/gm |
