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Description
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A white, crystalline or granular powder or flakes, hygroscopic
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Solubility
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Freely soluble in water; sparingly soluble in ethanol (95%)
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Identification
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-
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Identification 'A'
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The spectrum of the sample should be concordant with spectrum of standard
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Identification 'B'
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The principal peak in the chromatogram obtained with the test solution corresponds to the peak in the chromatogram obtained with the reference solution (a)
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Identification 'C'
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It should give the reaction of sodium salts
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Appearance of solution
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Solution should be clear and not more intensely colored than reference solution YS6
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Acidity or alkalinity
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Not more than 0.2 ml of either 0.1M hydrochloric acid or 0.1 M sodium hydroxide should be required to change the colour of the solution
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Arsenic
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NMT 2 ppm
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Chlorinated compounds
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The filtrate should comply with the limit test of chloride
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Loss on drying
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Max 2.0 %
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Assay (on dried basis)
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99.0% - 101.0%
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