Magnesium Silicate USP

Sr. No. Test Parameters Specification / Limits
1 Description A white fine bulky amorphous powder with faint odour
2 Solubility Practically insoluble in water, and in ether
3 Identification Shows test of Magnesium salts
4 Fluoride Not more than 10 ug/gm
5 Free Alkali Not more than 2.5 ml of 0.1 NHCL
6 Lead Not more than 10 ug/gm
7 Soluble Salt Not more than 75.0 mg
8 Heavy Metal Not more than 20 ug/gm
9 Loss on Drying Not more than 15 %
10 Loss On Ignition Not more than 15 %
11 pH 7.0 to 10.8
12 Assay as MgO
Assay as SiO2
NLT 15 %
NLT 67 %
13 Ratio of SiO2/MgO Between 2.5 to 4.50

MAGNESIUM SILICATE - Spin Flash Dried

Sr. No. Test Parameters Specification / Limits
1 Description A white fine bulky amorphous powder with faint odour.
2 Solubility Practically insoluble in water, and in other
3 Identification Shows test of Magnesium salts
4 Sodium NMT 2 %
5 Chloride NMT 0.1%
6 Sulphate NMT 0.48 %
7 Loss on Drying --
8 Loss on Ignition --
9 pH 7.0 TO 10.8
10 Assay as MgO
Assay as SiO2
NLT 15 %
NLT 67 %
11 Ratio of SiO2 / MgO Between 2.5 to 4.50
12 Free Alkali NMT 2.5 ML OF 0.1 N HCL
13 Bulk Density Before Tapping
Bulk Density After Tapping
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