Other Grade: BP/USP
| Description | Bulky white fine amorphous powder, Odorless |
| Solubility | Practically insoluble in water and ethanol 95%, It dissolves is dilute acids |
| Identification | Passes Test |
| Color of solution | Passes Test |
| Arsenic | Not more than 4ppm |
| Calcium | Not more than 1.5% |
| Heavy Metals | Not more than 30ppm |
| Iron | Not more than 0.08% |
| Chloride | Not more than 0.1% |
| Sulphate | Not more than 0.5% |
| Soluble Substances | Not more than 10.0mg |
| Substance insoluble in Acetic Acid | Not more than 5.0mg |
| Loss on Ignition | Not Less than 30.0% and Not more than 32.5 % |
| Assay as Magnesium Hydroxide Mg(OH)2 | Not Less than 95.0% Not more than 100.5 % |