| Description |
A white, crystalline or granular powder or flakes; hygroscopic
|
Identification |
-
|
| Identification 'A' |
To 10% w/v solution add ferric chloirde test solution ; a buff coloured precipitate is fomred. Add dilute hydrochloric acid ; a white crystalline precipitate is produced
|
Identification 'B' |
Gives the reactions of sodium salts and reactions (B) and (C) of benzoates
|
| Appearance of solution |
10.0% w/v solution in carbon dioxide free water is clear and not more intensely coloured than reference solution Y6
|
Acidity or alkalinity |
NMT 0.2 ml of 0.1 M hydrochloric acid or 0.1 M sodium hydroxide is required to change the colour of the solution
|
| Chlorinated compounds |
The filtrate complies with the limit test for chlorides
|
Loss on drying (at 105°C) |
NMT 2.0%
|
| Assay |
NLT 99.0% and NMT 100.5% of C7H5NaO2, calculated on the dried basis
|