Propylene glycol USP 2.5KG Go Back

CASR

: 57-55-6

Molecular Formula

: C3H8O2

Molecular Weight

: 76.1
Specifications  
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 acetone, and with chloroform. Soluble in ether and will dissolve many essential oils, but is immiscible with fixed oils.
Identification A (By IR, undried sample): IR spectra of the sample should be concomittant with IR spectra of the standard.
Identification B (Diethylene glycol): NMT 0.10%
Identification B (Ethylene glycol): NMT 0.10%
Identification C (By GC Chromatogram): The retention time of the propylene glycol peak of the sample solution corresponds to that of the standard solution.
Assay: NLT 99.5%
Residue on ignition: 0.007% max.
Chloride (Cl): 70ppm max.
Sulphate (SO4): 60ppm max.
Specific gravity, 25°C: 1.035 - 1.037
Acidity: NMT 0.20 mL of 0.1N sodium hydroxide required to change the colour of the indicator to pink
Water: NMT 0.2%
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