| Definition | |
| Chemical name | Magnesium hydroxide |
| Einecs | 215-170-3 |
| Chemical formula | Mg(OH)2 |
| Molecular weight | 58,32 |
| Assay | Content not less than 95,0 % on the anhydrous basis |
| Description | Odourless, white bulky powder |
| Identification | |
A.Positive test for magnesium and for alkali | |
B.Solubility | Practically insoluble in water and in ethanol |
| Purity | |
| Loss on drying | Not more than 2,0 % (105 oC, 2h) |
| Loss on ignition | Not more than 33 % (800 oC to constant weight) |
| Calcium oxide | Not more than 1,5 % |
| Arsenic | Not more than 3 mg/kg |
| Lead | Not more than 10 mg/kg |
