Magnesium Sulphate USP

Magnesium Sulphate heptahydrate also known as Epsom salt is an important inorganic salt that is on the list of WHO Model List of Essential Medicines.


Magnesium Sulphate is used for pharmaceutical preparation of magnesium. Epsom salt is used as bath salts and for isolation tanks while oral magnesium sulphate is commonly used as saline laxative or osmotic purgative. It is also used to maintain magnesium concentration in marine aquaria and as a brewing salt in beer production.


Chemical Name: Magnesium Sulphate
Synonyms: Epsom salt
Mol. Formula: MgSO4. 7H2O
Mol. Weight: 246.47 g/mol
CAS No.: 10034-99-8


General Specifications

Test Specification…USP
Appearance White, crystalline powder or brilliant transparent colorless crystals
Solubility Freely soluble in water, very soluble in boiling water, practically insoluble in alcohol.
Appearance of solution The solution is clear and colorless
pH Between 5.0 and 9.2
Loss on drying Not more than 2%
Loss on ignition Between 40% and 52%
Chloride Maximum 0.014%
Iron Maximum 20 micro-gm per gm
Heavy metals Maximum 0.001%
Selenium Maximum 0.003%
Organic volatile impurities Passes test
Residual solvents Passes test
Assay Not less than 99% and not more than 100.5%


Shelf life, Storage and Packing

It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.


GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.

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