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Description
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Colourless, light crystals, scales or needles
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Identification
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The solution gives the reactions of potassium salts and of chlorides
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Identification 'A'
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Melting point -121° to 124°C
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Identification 'B'
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Passes test
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Appearance of solution
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Solution should be clear and colorless
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Arsenic
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NMT 2 ppm
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Readily oxidisable substance
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NMT 0.5 ml of 0.1 M potassium permanganate is required
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Readily carbonisable substance
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The color of the solution should not be more intense than that of reference solution YS5
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Cinnamic acid
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No odour of benzaldehyde is developed
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Chlorinated compounds
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Passes test
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Heavy metals
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NMT 10 ppm
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Sulphated ash
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NMT 0.1%
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Water
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NMT 0.7%
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Assay (on anhydrous basis)
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99.5% - 100.5%
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