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Description
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Crystalline mass or clear, colourless, volatile liquid
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Identifications
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-
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Identification 'A'
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Passes test
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Identification 'B'
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Passes test
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Freezing point
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NLT 14.8 °C
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Residue on evaporation
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NMT 0.01%
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Reducing substance
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Not less than 1.0 ml of 0.1 M sodium thiosulphate solution is required
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Heavy metals
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NMT 5 ppm
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Iron
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NMT 5 ppm
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Chlorides
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NMT 25 ppm
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Sulphates
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NMT 50 ppm
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Assay
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99.0 – 100.5% w/w
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