|
Appearance
|
A very fine, light, white powder. 15 g occupies a volume of about 150 ml
|
|
Assay (as MgO; on ignited basis)
|
98.0 - 100.5%
|
|
Identification 'A' & 'B'
|
Passes IP test
|
|
Apparent Volume
|
15 gms occupies a volume of 150 ml
|
|
Appearance of solution
|
Solution A should not more intensely colour than reference solution BS2
|
|
Arsenic (As2O3)
|
Max 0.0004%
|
|
Iron (Fe)
|
Max 0.1%
|
|
Chloride (Cl)
|
Max 0.125%
|
|
Sulphate (SO4)
|
Max 1.0%
|
|
Calcium (Ca)
|
Max 1.5%
|
|
Soluble substance
|
Max 2.0%
|
|
Substance insoluble in acetic acid
|
Max 0.1%
|
|
Residue on ignition (at 800°C)
|
Max 8.0% (on 0.5 g)
|
|
Solubility
|
Practically insoluble in water,insoluble in ethanol (95%).It dissolves in dilute acids with at most slihght effervences
|