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Description
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White, granular crystals or a white, crystalline powder
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Solubility
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Freely soluble in water; practically insoluble in ethanol (95%) and in ether
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Identification
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Solution A should gives the reaction of sodium salts and reactions of citrates
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Appearance of solution
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Solution A should be clear and colourless
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Acidity or alkalinity
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Not more than 0.5 ml of 0.05 M sulphuric acid or of 0.1 M sodium hydroxide should required
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Arsenic
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NMT 2 ppm
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Chlorides
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NMT 100 ppm
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Oxalate
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NMT 300 ppm
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Sulphates
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NMT 150 ppm
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Tartrates
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No crystalline precipitate should be formed
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Readily carbonisable substance
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The solution is not more intensely colured than reference solution YS2 OR GYS2
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Water
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11.0 to 13.0 %
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Assay (on anhydrous basis)
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99.0 – 101.0%
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