Magnesio solfato eptaidrato, Pharmpur®, Ph Eur, BP, USP

- Synonyms: Bitter salt, Epsom salt, Sulfuric acid magnesium salt heptahydrate
- MgSO4·7H2O
- M = 246,48 g/mol
- CAS [10034-99-8]
- EINECS-No.: 231-298-2
- Solub. in water: (20 ºC): 710 g/l
- Tariff number: 2833 21 00 00
- Applications: analytical chemistry, manufacture of dyes, in fertilizer compositions, in explosive compositions, cosmetics.

SPECIFICATIONS
assay (complexometric, referred to dried sample): 99,0 - 100,5 %
assay (complexometric, on ignited substance): 99,0 - 100,5 %
Identification magnesium: passes test
Identification sulfates: passes test
appearance of solution: clear and colourless
pH (5 %, H2O): 5,0 - 9,2
acidity or alkalinity: passes test
chlorides (Cl): max. 0,014 %
arsenic (As): max. 2 ppm
iron (Fe): max. 20 ppm
selenium (Se): max. 30 ppm
loss on drying : 48,0 - 52,0 %
loss on ignition (450 ºC): 40,0 - 52,0 %