Propylene glycol CDMF PARENTEX PLUS 2.5LT Go Back


: 57-55-6

Molecular Formula

: C3H8O2

Molecular Weight

: 76.1
Description: Clear colourless, viscous liquid having a slight, characteristic taste. Is practically odorless. Absorbs moisture when exposed to moist air.
Solubility: Misible with water,with ethanol (96%),with acetone, and with chloroform.Soluble in ether and will dissolve many essential oils, but is immiscible with fixed oils.
Identification (By IR): IR spectra of the sample should be concomitant with IR spectra of the standard.
Identification (Diethylene glycol): NMT 0.10%
Identification (Ethylene glycol): NMT 0.10%
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° - 189°C
Identification(By Melting point): Crystals should melt between 121 °C to 128 °C.
Clarity and colour of solution: Clear and colorless.
Specific gravity, 25°C: 1.035 - 1.037
Relative density, 20°C: 1.035 - 1.040
Refractive index (20°C ± 0.5°C): 1.431 - 1.433
Assay: NLT 99.5%
Residue on ignition: NMT 0.005%
Chloride (Cl): NMT 70ppm
Sulphate (SO4): NMT 60ppm
Acidity: Not more than 0.05 mL of 0.1 M sodium hydroxide  should require to change the colour of the indicator to blue.
Oxidising substances: Not more than 0.2 mL of 0.05 M sodium thiosulfate should required.
Reducing substances: The solution does not change its appearance.
Water: NMT 0.2%
Total aerobic microbial count: NMT 100 CFU/ml
Total Yeast & mold count: NMT 10 CFU/ml
Bacterial endotoxins: NMT 0.012 EU/mg
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