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Description
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Colourless crystals or a white powder; slightly. hygroscopic in moist air
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Identifications
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-
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Identification 'A'
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The spectrum of sample should be concordant with spectrum of standard
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Identification 'B'
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Passes test
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Identification 'C'
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Passes test
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Appearance of solution
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Passes test
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Arsenic
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NMT 1 ppm
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Barium
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Passes test
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Calcium (Ca)
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NMT 200 ppm
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Heavy metals
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NMT 10 ppm
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Iron
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NMT 50 ppm
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Chlorides
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NMT 50 ppm
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Sulphate (SO4)
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NMT 150 ppm
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Oxalic acid
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Passes test
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Readily carbonisable substance
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12. Readily carbonisable substances Any colour produced is not more intense than that of a mixture of 1.0 ml of CCS and 9.0 ml of FCS
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Sulphated ash
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NMT 0.1%
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Water
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NMT 1.0%
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Assay
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99.0 – 101.0%
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