Propylene glycol IP/BP PARENTEX 2LT Go Back


: 57-55-6

Molecular Formula

: C3H8O2

Molecular Weight

: 76.1
Description: A clear, colourless, vicous liquid; practically odrourless; hygroscopic.
Solubility: Miscible with water, with ethanol (96%), with acetone, and with chloroform; Soluble in ether and immiscible with fixed oils
Identification A (By IR): IR spectra of the sample should be concomitant with IR spectra of the standard
Identification B (Diethylene glycol): NMT 0.1%
Identification B (Ethylene glycol): NMT 0.1%
Identification (By GC Chromatogram): The retention time of the propylene glycol peak of the sample solution corresponds to that of the standard solution.
Identification (by Relative density, 20°C): 1.035 -1.040
Identification (By Refractive index, 20±0.5°C): 1.431 -1.433
Identification (By Boiling Point): 184° to 189°C
Identification(By Melting point): Crystals should melt between 121°C to 128°C
Appearance of solution: Clear and colourless
Relative density (20°C): 1.035 -1.040
Refractive index (20°C ± 0.5°C): 1.431 -1.433
Specific gravity, 25°C: 1.035-1.037
Oxidising substances: NMT 0.2 mL of 0.05M sodium thiosulfate should require.
Reducing substances: The solution does not change its appearance.
Heavy metals: NMT 5 ppm
Acidity: Not more than 0.05 mL of 0.1 M sodium hydroxide should require to change the colour of the indicator to blue
Diethylene glycol: NMT 0.1 %
Ethylene Glycol: NMT 0.1 %
chloride: NMT 70ppm
Sulphate: NMT 60ppm
Sulphated ash: NMT 0.007%
Water: NMT 0.2%
Assay: NLT 99.5%
Total aerobic microbial count: NMT 100 CFU/ml
Total Yeast & mold count: NMT 10 CFU/ml
Bacterial endotoxins: NMT 2.5EU/ml
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