Synonyms | Magnesiumhydrogenphosphate |
Magnesiumphosphate, dibasic |
Dimagnesium orthophosphate |
Secondary magnesiumphosphate |
Definition | |
Chemical name | Dimagnesiummonohydrogenmonophosphate |
Einecs | 231-823-5 |
Chemical formula | MgHPO4 · nH2O (where n = 0-3) |
Molecular weight | 120,3 (anhydrous) |
Assay | Not less than 96 % after ignition |
Description | White, odourless, crystalline powder, slightly soluble in water |
Identification | |
A.Positive test for magnesium and for phosphate | |
B.MgO content: | Not less than 33,0 % calculated on an anhydrous basis |
Purity | |
Fluoride | Not more than 10 mg/kg (as fluorine) |
Arsenic | Not more than 3 mg/kg |
Lead | Not more than 4 mg/kg |
Cadmium | Not more than 1 mg/kg |
Mercury | Not more than 1 mg/kg |