Magnesium Sulphate Heptahydrate AR/ACS 500Gram CDH

PRODUCT CODE 568325
SYNONYMS --
C.I. NO. --
CASR NO. (10034-99-8)
MgSO4.7H2O
ATOMIC OR MOLECULAR FORMULA MgSO4.7H2O
ATOMIC OR MOLECULAR WEIGHT 246.47
PROPERTIES Loses 4H2O at 70 -80°C; loses 5H2O at 100°C;
loses 6H2O at 120°C; loses last H2O at 250°C;
Noncombustible.

PARAMETER LIMIT
Description Colourless efflorescent crystals or white crystalline powder
Solubility 10% solution in water is clear and colourless.
Identification Passes test.
Minimum Assay (Complexometric; Cal.on dried substance) 99.5 - 103.0%
pH (5% soln. in water) 5.0 – 8.2

MAXIMUM LIMIT OF IMPURITIES
Loss on drying(at 110 for 1 hr,then ignite at 400°C) 48 – 52%
Insoluble matter 0.005%
Acidity (H2SO4) 0.0025%
Alkalinity (MgO) 0.004%
Ammonium (NH4) 0.002%
Chloride (Cl) 0.0005%
Nitrate (NO3) 0.002%
Calcium (Ca) 0.02%
Iron (Fe) 0.0005%
Heavy metals (as Pb) 0.001%
Manganese (Mn) 0.0005%
Potassium 0.005%
Sodium 0.005%
Strontium 0.005%
Organic volatile impurities Meets the requirement