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Description
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A white, crystalline powder or colourless shiny plates unctuous to the touch or white crystals; odourless
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Solubility
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Solubility Freely soluble in boiling water,boiling ethanol (95%), in glycerin; soluble in water, ethanol (95%)
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Identification
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-
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Identification 'A'
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The flame should have a green border
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Identification 'B'
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The solution should be slightly acid
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Appearance of solution
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Solution should clear, and colourless
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pH
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3.8 to 4.8
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Solubility in ethanol
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The solution should not be more opalescent than opalescence standard OS2, and colourless
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Arsenic
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NMT 10 ppm
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Sulphates
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NMT 450 ppm
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Loss on drying
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NMT 0.5%
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Assay (on dried basis)
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99.5 – 100.5%
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