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Description :White or almost white, very fine, light powder, greasy to the touch, practically insoluble in water and ethanol, very faint odor of Stearic Acid.
Identification : Gives the reaction of Magnesium
Microbial limit : E. Coli Absent
Total bacterial Count : NMT 1000/gM
Loss on Drying (200C):10.0% to 20.0%
Soluble Chloride : NMT 3.5%
Soluble Sulphate : NMT 1.9%
Sodium : 0.1 % max.
Arsenic : NMT 10 ppm.
Heavy Metals : NMT 60 ppm. IN I.P. & 30 ppm in B.P.
Magnesium Hydroxide : 49.2% to 66.6 %
Aluminium Hydroxide : 32.1 % to 45.9%
Sulphate : 16.0 % to 21.0%
Assay as Magaldrate :90.0 % to 105 %