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Description
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A clear, colourless or almost colourless, syrupy liquid; hygroscopic
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Solubility
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Miscible with water and with ethanol (95%), slightly soluble in acetone; practically insoluble in ether and in fixed oils and volatile oils
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Identification
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Test C may be omitted if test A and B are carried out. Test A and B may be omitted if test C is carried out
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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 (Refractive Index)
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1.470 to 1.475
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Identification C (Relative density)
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1.258 to 1.268
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Appearance of solution
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Solution A should be clear and diluted solution should be colorless
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Acidity or alkalinity
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The solution should be colourless and not more than 0.2 ml of 0.1 M sodium hydroxide should required to produce a pink colour
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Chlorides
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NMT 10 ppm
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Aldehydes
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NMT 10 ppm
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Ester
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Not less than 8.0 ml of 0.1 M hydrochloric acid should be required to decolourise the solution
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Halogenated compounds
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NMT 35 ppm
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Ethlylene glycol, diethylene glycol and related substances
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-
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Ethylene Glycol
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NMT 0.1%
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Diethylene glycol (GC)
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NMT 0.1%
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Any other secondary impurity
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NMT 0.1%
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Sum of all impurities
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NMT 1.0%
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Sugars
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The solution should remain blue and no precipitate should be produced
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Sulphated ash
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NMT 0.01%
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Water
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NMT 2.0%
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Assay (on anhydrous basis)
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98.0 – 101.0%
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