Magnesium Trisilicate - IP
Other Grade : BP/USP
- CAS No. : 14987-04-3
- Molecular Formula : 2MgO, 3SiO2, xH2O
- Category : Antacid
- Storage Condition : Store protected from moisture
| Description | Fine white or nearly white powder free from grittiness, odorless, slightly hygroscopic |
| Solubility | Practically insoluble in water and in ethanol (95%) |
| Identification | (A) Magnesium : Positive (B) Silicate : Positive |
| Alkalies | Not more than 1.0 ml of 0.1 NHCl |
| Aresnic | Not more than 4.0 ppm |
| Heavy Metals | Not more than 30 ppm |
| Chloride | Not more than 1000 ppm |
| Sulphate | Not more than 0.5% |
| Acid Absoption | Not less than 100 ml of 0.1 NHCl |
| Water Soluble Salts | Not more than 30 mg |
| Loss on Ignition | Not less than 17.0% and not more than 34.0% |
| Assay (on ignition basis) (A)For Magnesium Oxide (B)For Silicon Dioxide |
Not less than 29.0% Not less than 65.0% |