Magnesium sulfate heptahydrate, for analysis, ExpertQ®, ACS, Reag. Ph Eur

- 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, on dried sample): 99 - 102 %
identity: passes test
appearance of solution: passes test
insoluble in water: max. 0,005 %
pH (5 %, H2O): 5,0 - 8,2
acidity or alkalinity: passes test
chlorides (Cl): max. 0,0003 %
nitrates (NO3): max. 0,002 %
total nitrogen (as N): max. 0,002 %
ammonium (NH4): max. 0,002 %
arsenic (As): max. 0,0002 %
calcium (Ca): max. 0,005 %
copper (Cu): max. 0,0001 %
heavy metals (as Pb): max. 0,0005 %
iron (Fe): max. 0,0001 %
lead (Pb): max. 0,0001 %
manganese (Mn): max. 0,0005 %
potassium (K): max. 0,001 %
sodium (Na): max. 0,001 %
strontium (Sr) : max. 0,005 %
loss on ignition (400ºC): 48 - 52 %