| Appearance |
A white, or almost white powder, free from grittiness, readily adhere to the skin, unctuous to the touch
|
Solubility |
Practically insoluble in water and in dilute solution of acids and in alkali hydroxides
|
| Identification 'A','B' & 'C' |
Passes IP test
|
Acidity or alkalinity |
Not more than 0.3 ml of 0.1M HCl should be required to make it acidic
|
| Water insoluble matter |
The residue weight a maximun 10 mg
|
Carbonate |
No effervescence should be produced
|
| Chlorides |
Max 250 ppm
|
Organic compounds |
The residue obtained in LOD test should not more than slightly yellow or grey
|
| Loss on drying (at 180°C; 1 hrs) |
NMT 1.0%
|