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Appearance
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Colorless to White or slightly pinkish crystals, granules or flakes
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Solubility
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Freely soluble in water and alcohol, glycerin, ether and slightly soluble in chloroform
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Assay (on dried basis)
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99.0 - 100.5%
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Identification
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To comply BP, USP tests
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Appearance of solution
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Passes BP test
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Insoluble matter in water
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Max 0.005%
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Acidity or alkalinity
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Passes BP test (Max 0.004 meq/g)
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Melting range
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109 - 111°C
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Phenol
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Passes test
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Related Substances
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Max 0.5%
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Pyrocatechol/Catechol (C6H6O2)
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Passes test
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Sulphated ash
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Max 0.01%
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Loss on drying (over silica gel; 4 hrs)
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Max 1.0%
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