CHEMICAL AND PHYSICAL PROPERTIES
Description
 
:
 
A white or nearly white powder free from gritty particles, odourless, tasteless, slightly hygroscopic
Solubility : Insoluble in water and ethanol
Identification : Passes B.P. test
Alkalinity : Passes B.P. test
Arsenic : Less than 4 ppm
Heavy Metals : Less than 40 ppm
Chloride : Passes B.P. test
Sulphate : Passes B.P. test
Acid absorption
(on Ignited basis)
: Not less than 100 ml /gm. (0.1 N Hcl)
Soluble Salts : Passes B.P. test
Loss on Ignition
 
:
 
Not Less than 17%
Not more than 34 %
MgO (on ignited basis) : Minimum 29.0 %
SiO2 (on ignited basis) : Minimum 65.0 %
 
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