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Description
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Colourless, hexagonal or needle-like crystals, or infused masses or a crystalline powder
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Identification
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-
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Identification (By IR)
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Passes test
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Identification 'B'
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The colour change is violet
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Identification 'C'
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When triturated with about an equal weight of camphor or chloral hydrate or phenol, the mixture liquifies
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Appearance of solution
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The solution is not more opalescent than opalescence standard OS4, and not more intensely coloured than reference solution RS6
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Acidity
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Passes test
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Specific optical rotation
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-51.0° to -49°.0
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Congealing range
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27.0°C to 28.0°C; on prolonged stirring the temp. rises to 30°C to 32°C
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Related substances (GC)
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-
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Total impurities
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NMT 1.0%
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Residue on evaporation
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NMT 0.05%
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