MAGNESIUM TRISILICATE IP

CAS  No. : 14987-04-3
Molecular Formula : Mg2Si3O8,xH2O
Category : Antacid
Storage Condition : Store protected from moisture
Source : IP-2010 Vol-2, Page No.1626

Application

Used as Antacid in Antacid Formulations. Also useful Antioxidant, Decolorizing Agent and industrial odor absorbent.

Sr. No. Test Parameters Specification / Limits
1 Description A fine white, odorless powder, slightly hygroscopic.
2 Solubility Practically insoluble in water and in ethanol (95%).
3 Identification - A
B
It gives the reaction of magnesium salts.
It gives the reaction of silicates.
4 Alkalinity Not more than 1.0 ml of 0.1M HCl is required.
5 Arsenic Not more than 4 ppm
6 Heavy Metals Not more than 40 ppm
7 Chloride Not more than 500 ppm
8 Sulphate Not more than 0.5 %
9 Water soluble Salt   Not more than 30 mg
10 Acid Absorption Cap.   Not less than 100 ml 0.1M HCl acid per gm
11 Loss on Ignition Between 17 % to 34 %
12 Assay as MgO
Assay as SiO2
Not less than 29 % (Ignited basis)
Not less than 65 % (Ignited basis)

MAGNESIUM TRISILICATE USP

CAS  No.

:

14987-04-3

Molecular Formula

:

Mg2Si3O8,xH2O

Molecular Weight 

:

260.86 gm/mol

Storage Condition

:

Preserve in tight container

Source

:

USP-34, Page No. 3371

Application

Used as Antacid in Antacid Formulations. Also useful Antioxidant, Decolorizing Agent and industrial odor absorbent.

Sr. No. Test Parameters Specification / Limits
1 Description Fine, white, odourless, tasteless powder, free from grittiness.
2 Solubility Insoluble in water and alcohol is readily decomposed by mineral acids.
3 Identification - A
B
It gives the reaction of magnesium.
It gives the reaction of silicates.
4 Water Between 17.0 % to 34.0 %
5 Soluble salts Residue weight Not more than 38.0 mg (1.5 %)
6 Chloride Not more than 0.055 %
7 Sulphate Not more than 0.5 %
8 Free Alkali Not more than 1.0 ml of 0.1 M HCl is required.
9 Arsenic Not more than 8 ppm
10 Heavy Metals Not more than 0.003 %
11 Acid Consuming capacity Between 140 ml to 160 ml of 0.1N HCl is required
12 Assay as MgO
Assay as SiO2
Not less than 20.0 % of MgO
Not less than 45.0 % of SiO2
13 Ratio of SiO2 to MgO Between 2.10 to 2.37

MAGNESIUM TRISILICATE BP

CAS  No.

:

14987-04-3

Molecular Formula

:

Mg2Si3O8,xH2O

Source

:

BP-2013

Application

Used as Antacid in Antacid Formulations. Also useful Antioxidant, Decolorizing Agent and industrial odor absorbent.

Sr. No. Test Parameters Specification / Limits
1 Description A fine white powder.
2 Solubility Practically insoluble in water and in alcohol.
3 Identification: (A)
(B)
It gives the reaction of silicates.
It gives the reaction of magnesium.
4 Alkalinity
(solution-S)
Not more than 1.0 ml of 0.1M HCl is required.
5 Water soluble Salts Not more than 30 mg.
6 Chloride Not more than 500 ppm
7 Sulphate Not more than 0.5 %
8 Arsenic Not more than 4 ppm
9 Heavy Metal Not more than 40 ppm
10 Loss on Ignition  Between 17 % to 34 % ignited at 900°
11 Acid Absorbing Capacity Not less than 100 ml of 0.1M HCl acid per gm
12 Assay as MgO
Assay as SiO2
Not less than 29 % of MgO (Ignited basis)
Not less than 65 % of SiO2 (Ignited basis)


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