Magnesium Trisilicate USP

Magnesium trisilicate is an inorganic compound, appears as white powder. It is practically insoluble in water and ethanol.


It is used as a food additive and as an antacid. 


Test Specification
Characters It occurs as a fine, white, odorless, tasteless powder, free from grittiness.

Test A

Test B


It gives reaction of Magnesium

Specified test

Solubility Insoluble in water and in alcohol.
Water determination Loses between 17.0% to 34%
Soluble salts Weight of the residue is not more than 1.5%
Chlorides Not more than 0.055%
Sulfates Not more than 0.5%
Arsenic Not more than 8 ppm
Free alkali Specified test
Heavy metals Not more than 0.003%
Acid consuming capacity Specified test
Residual solvents Meets the requirement
Ratio of SiO2 to MgO Between 2.10 and 2.37
Assay –

Magnesium oxide(MgO)

Silicon dioxide(SiO2)


Not less than 20.0%

Not less than 45.0%


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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