| 1 | Description | White caked salt. | Colorless or white, granular or caked salt. | USP |
| 2 | Solubility | Complies | Freely soluble in water; very slightly soluble in alcohol. | USP |
| 3 | Identification A (Sodium) | Complies | A dense precipitate should form. | USP |
| 4 | Identification B (Phosphate 1) | Complies | With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide. | USP |
| 5 | Identification B (Phosphate 2) | Complies | With ammonium molybdate solution, acidified solution should yield a yellow precipitate that should be soluble in 6 N ammonium hydroxide. | USP |
| 6 | Appearance of solution | Complies | Solution S should be clear and colourless. | In-house |
| 7 | Reducing substances | Complies | The Colour of the permanganate should not be completely discharged. | In-house |
| 8 | Insoluble Substances | 0.01% | NMT 0.4% | USP |
| 9 | Chlorides | Less than 0.06% | NMT 0.06% | USP |
| 10 | Sulfates | Less than 0.2% | NMT 0.2% | USP |
| 11 | Arsenic | Less than 16 ppm | NMT 16 ppm | USP |
| 12 | Iron | Less than 20 ppm | NMT 20 ppm | In-house |
| 13 | Loss on drying at 130°C | 46.6% | 43.0%-50.0% | USP |
| 14 | pH | 9.1 | 8.7-9.3 | In-house |
| 15 | Heavy metal (as Pb) | Less than 10 ppm | NMT 10 ppm | In-house |
| 16 | Assay (on dried basis) | 99.9% | 98.0%-100.5% | USP |
| 17 | Bacterial endotoxins | Less than 2.5 IU/g | NMT 2.5 IU/g | Im-house |
| 18 | Total Microbial Count | Less than 100 cfu/g | NMT 100 cfu/g | In-house |
| 19 | Total Yeast and mold count | Less than 100 cfu/g | NMT 100 cfu/g | In-house |