LIGHT MAGNESIUM OXIDE IP

CAS  No. : 1309-48-4
Molecular Formula : MgO
Molecular Weight : 40.30 gm/mol
Category : Antacid; Osmotic laxative
Storage Condition : Store protected from moisture
Source : IP-2010 Vol-2, Page No.1624
Sr. No. Test Parameters Specification / Limits
1 Description A fine white powder, odorless, 15 gm occupies volume of about 150 ml
2 Solubility Practically insoluble in water, soluble in dilute acids
3 Identification Shows test of Magnesium salts
4 Appearance of solution Solution A is not more intensely colored than Reference solution BS2
5 Arsenic Not more than 4 ppm
6 Heavy Metals Not more than 30 ppm
7 Chloride Not more than 0.125 %
8 Iron Not more than 0.1 %
9 Calcium     Not more than 1.5 %
10 Sulphate                Not more than 1.0 %
11 Loss on Ignition Not more than 8.0 %
12 Soluble Substances Not more than 20 mg
13 Substance Insoluble in Acetic Acid Not more than 5 mg
14 Assay as MgO Bet. 98.0 % to 100.5 % (Ignited basis)

LIGHT MAGNESIUM OXIDE BP

CAS  No. : 1309-48-4
Molecular Formula : MgO
Molecular Weight  : 40.30 gm/mol
Category : Antacid; Osmotic laxative
Storage Condition : Store protected from moisture
Source : BP-2007

 

Sr. No. Test Parameters Specification / Limits
1 Description A fine white powder amorphous powder.
2 Solubility Practically insoluble in water, it dissolves in dilute acids with at most slight effervescence
3 Identification - A
B
(A) 15 gm has apparent volume before settling of about 150 ml
(B) It gives the reaction of Mg salts.
4 Appearance of solution Solution S is not more intensely colored than Reference solution B2
5 Arsenic Not more than 4 ppm
6 Heavy Metals Not more than 30 ppm
7 Chlorides Not more than 0.15 %
8 Calcium Not more than 1.5 %
9 Iron Not more than 0.1 %
10 Loss on Ignition Not more than 8.0 %
11 Sulphate Not less than 1.0 %
12 Soluble Substances Not more than 20 mg
13 Sub. Insoluble in Acetic acid Not more than 5 mg
14 Assay as MgO Bet. 98.0 % to 100.5 % (Ignited basis)


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