Magnesium Citrate USP

Magnesium citrate is a magnesium preparation in salt form with citric acid in a 1:1 ratio. It is fine white water soluble powder.


Used in the pill form as a magnesium dietary supplement. As a food additive, magnesium citrate is used to regulate acidity and is known as E number E345.


Product Name: Magnesium Citrate
Molecular Formula:  Mg3(C6H5O7)2
Molecular Weight: 451.1 g/mol
CAS No.: 3344-18-1



Test Specification
Character It occurs as a white powder.




(a)Specified Test. It gives the reaction of magnesium.

(b)Specified Test. It gives the reaction of citrate.

pH Between 5 to 9
Chloride Not more than 0.05%
Sulfate Not more than 0.2%
Heavy Metals Not more than 50 ppm
Arsenic Not more than 3 ppm
Iron Not more than 200 ppm
Calcium Not more than 1% on dried basis.
Loss on drying Not more than 2%
Residual solvents Meets the requirement.
Assay Not less than 14.5% and not more than 16.4% on dried basis.


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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