1 | Description | White, granular.Effloresces in warm, dry air. Its solutions are alkaline to phenolphthalein. A 0.1M solution have pH 9. | Colorless or white, granular or caked salt. Effloresces in warm, dry air. Its solutions are alkaline to phenolphthalein. A 0.1M solution should have a pH about 9. |
2 | Solubility | Complies | Freely soluble in water; very slightly soluble in alcohol |
3 | Identification A (By Chemical test) | Complies | A dense precipitate should form. |
4 | Identification B (By Chemical test 1) | Complies | With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide. |
5 | Identification B (By Chemical test 2) | Complies | With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide. |
6 | Assay (on dried basis) | 99.7% | 98.0% - 100.5% (Na2HPO4) |
7 | Insoluble Substances | 0.006% | NMT 0.4% |
8 | Chlorides | Less than 0.06% | NMT 0.06% |
9 | Sulfate (SO4) | Less than 0.2% | NMT 0.2% |
10 | Arsenic (As) | Less than 1.5ppm | NMT 1.5ppm |
11 | Loss on drying,130°C | 47.2% | 43.0% - 50.0% |
12 | Total aerobic microbial count | Less than 100 CFU/gm | NMT 100 CFU/gm |
13 | Total Yeast & mold count | Less than 10 CFU/gm | NMT 10 CFU/gm |
14 | Escherichia coli | Absent/gm | should be absent/gm |
15 | Salmonella | Absent/10gm | should be absent/ 10gm |
16 | Pseud. aeruginosa | Absent/gm | should be absent/gm |
17 | Staphylococcus aureus | Absent/gm | should be absent/gm |
18 | Bile-tolerant gram negative bacteria | Absent/gm | should be absent/gm |
19 | Bacterial endotoxins | Less than 2.5 EU/mg | NMT 2.5 EU/mg |