| Description |
A white, crystalline powder or small, opaque, monoclinic crystals. It gradually forms sodium carbonate on heating in the dry state or in solution
|
Solubility |
Freely soluble in water, Practically insoluble in ethanol (95%)
|
| Identification |
-
|
Identification 'A' |
On heating, a gas should evolve and the solution should become red
|
| Identification 'B' |
It should give reaction A of bicarbonates
|
Identification 'C' |
Solution A should give the reactions of sodium salts
|
| Appearance of solution |
Solution A should be Clear & colorless
|
Arsenic |
NMT 2 ppm
|
| Calcium |
A 2.0 per cent w/v solution, when boiled for 5 minutes should be clear
|
Iron |
NMT 20 ppm
|
| Carbonate |
The pH of freshly prepared solution S is not greater than 8.6
|
Chlorides |
NMT 200 ppm
|