Very soluble or freely soluble in water, freely soluble in acetic acid, sparingly soluble in ethanol (96%)), practically insoluble in acetone.
Solubility (USP)
Very soluble or freely soluble in water; freely soluble in acetic acid; sparingly soluble in alcohol; practically insoluble in acetone
Identification A : (USP)
The retention time of the major peak of the sample solution A corresponds to that of the standard solution, as obtained in the test for chromatographic purity in impurities
Identification A : (EP, BP)
The principal peak in the chromatogram obtained with test solution is similar in retention time and size to the principal peak in the chromatogram obtained with reference solution (a).
Identification B : (USP)
No precipitate is formed
Identification B : (EP, BP)
0.2 ml of 10% solution + 0.3 mL of water gives reaction (b) of sodium
Appearance of solution (USP)
10% solution in freshly boiled and cooled water is clear and colourless
Appearance of solution (EP, BP)
10% solution in water is clear and colourless
pH (10% in water at 25°C) : (USP, EP, BP)
8.00-10.50
Heavy metals (USP)
<= 0.0005%
Heavy metals (EP, BP)
<= 0.0010%
Water (USP, EP, BP)
<= 3.00%
Related substances, any impurity for each impurity, GC : (USP, EP, BP)
<= 0.30%
Related substances, total impurity, GC : (USP, EP, BP)