| TESTS |
SPECIFICATIONS |
REFERENCE |
| |
| Description |
A white or almost white, crystalline powder. |
BP/EP |
|
| |
| Solubility |
Freely soluble in water, slightly soluble in alcohol, practically insoluble in ether. |
BP/EP |
| |
| Identification |
(A) To comply IR test.
(B) It gives reaction of sodium - a dense, white precipitate is produced.
|
BP/EP
BP/EP |
| |
Appearance of
solution |
5 % w/v solution is clear and not more intensely coloured than reference solution GY7. |
BP/EP |
| |
| Acidity or alkalinity |
NMT 0.25 ml of 0.01 M NaOH is required |
BP/EP |
| |
IRelated Substances
( By HPLC ) |
Impurity A – NMT 0.2 %
Impurity B – NMT 0.2 %
Unspecified Impurity – NMT 0.1 %
Total Impurity- NMT 0.5 %
|
BP/EP |
| |
| Chlorides |
Not more than 200 ppm |
BP/EP |
| |
| Sulphates |
Not more than 400 ppm |
BP/EP |
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| Heavy Metals |
Not more than 20 ppm |
BP/EP |
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| Water |
3.0 % to 5.0 % |
BP/EP |
| |
| Assay |
NLT 98.5 % and NMT 100.5 % of C18H13NNa2O8S2 H2O, on dried basis |
BP/EP |
