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Appearance
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Colourless or almost colourless crystals or colourless or almost colourless, oily liquid
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Assay
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99.0% - 100.5%
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Solubility
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Practically insoluble in water, miscible with ethanol (96 per cent), with methylene chloride and with fatty and essential oils
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Boiling Point
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About 320°C
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Identification A (IR spectrum)
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Complies
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Identification 'B'
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Precipitate melts at 121°C to 124°C
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Identification 'C'
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Precipitate melts at 121°C to 124°C
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Acidity
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Not more than 0.2 mL of 0.1N NaOH is required to change the colour of the indicator to pink
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Relative density
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1.118 to 1.122
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Refractive index (20°C; 589 nm)
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1.568 to 1.570
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Freezing point
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Min 17.0 °C
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Sulphated ash
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Max 0.1%
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