Magnesium oxide, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Magnesia usta
- MgO
- M = 40,30 g/mol
- CAS [1309-48-4]
- EINECS-No.: 215-171-9
- Solub. in water: (20 ºC): insoluble
- Melting point: ~ 2800 ºC
- Boiling point: 3600 ºC
- Tariff number: 2519 90 10 00
- Applications: in the ceramics industry, in optics, in building materials, in pharma industry.

SPECIFICATIONS
assay (complexometric): 98,0 - 100,5 %
assay (chromatography, on ignited substance): 96,0 - 100,5 %
Identification magnesium: passes test
Identification B (USP): passes test
appearance of solution: passes test
insoluble in CH3COOH: max. 0,1 %
acid-insoluble matter: max. 0,1 %
soluble substances: max. 2,0 %
free alkali and soluble salts: max. 2,0 %
chlorides (Cl): max. 0,15 %
sulfates (SO4): max. 1,0 %
arsenic (As): max. 4 ppm
calcium (Ca): max. 1,1 %
iron (Fe): max. 0,05 %
residue on ignition (900 C): max. 8,0 %