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Appearance
|
White powder or crystalline powder
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|
Assay (by titration)
|
99.0-101.0% (on dried substance)
|
|
Assay (by HPLC; on dried basis)
|
98.0 -102.0%
|
|
Solubility
|
Sparingly soluble in water, soluble in boiling water, freely soluble in ethanol (96 per cent) and in methanol, soluble in acetone
|
|
Infrared spectrum
|
Conforms
|
|
Identification as per USP
|
The retention time of the adipic acid peak of the Sample solution corresponds to that of the Standard solution, as obtained in the Assay
|
|
Melting point
|
151-154 °C
|
|
Appearance of solution
|
Passes test
|
|
Chloride (Cl)
|
Max 0.02%
|
|
Nitrate (NO3)
|
Max 0.003%
|
|
Sulphate (SO4)
|
Max 0.05%
|
|
Iron (Fe)
|
Max 0.001%
|
|
Heavy metal (as Pb)
|
Max 0.0001%
|
|
Loss on drying (1 g, 105°C, 3 hrs)
|
Max 0.2%
|
|
Sulphated ash
|
Max 0.1%
|
|
Related Substances
|
-
|
|
Individual impurity
|
Max 0.1%
|
|
Total impurities
|
Max 0.5%
|