Glycerol 85% Ph.Eur 25KG Go Back

CASR

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Molecular Formula

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Molecular Weight

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Specifications  
Appearance: Syrupy liquid, unctuous to the touch, colourless or almost colourless, clear, very hygroscopic.
Solubility: Miscible with water and with ethanol (96%), slightly soluble in acetone, practically insoluble in fatty oils and in essential oils.
Identification A (By Refractive index, 20±0.5°C): 1.449 to 1.455
Identification B (By IR): IR spectra of the sample should be concomitant with IR spectra of the corresponding standard.
Identification C (Relative density): 1.221 to 1.232
Appearance of solution: The solution should be clear and colorless.
Acidity or alkalinity: Not more than 0.2ml of 0.1M sodium hydroxide should require to change the color of the indicator to pink.
Refractive index (20°C ± 0.5°C): 1.449 to 1.455
Aldehydes: 10ppm max.
Ester: Not less than 8.0mL of 0.1M hydrochloric acid should require to change the color of the indicator.
Related substances: Impurity A (Diethylene glycol): 0.1% max.
Related substances: Any other impurity with a retention time less than the retention time of glycerol: 0.1% max.
Related substances: Total of all impurities with retention times greater than the retention time of glycerol: 0.5% max.
Halogenated compounds: 30 ppm max.
Sugars: The solution should remain blue and no precipitate should form.
Chlorides: 10 ppm max.
Water: 12.0% to 16.0%
Sulfated ash: 0.01% max.
Assay: 83.5% m/m to 88.5% m/m
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