CASR |
: | 57-55-6 |
Molecular Formula |
: | C3H8O2 |
Molecular Weight |
: | 76.1 |
| Specifications | |
|---|---|
| Description: | Clear, colourless, viscous liquid having a slight, characteristic taste. Is practically odourless. Absorbs moisture when exposed to moist air. |
| Solubility: | Miscible 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. |
| Appearance of Solution: | The solution clear and colurless |
| 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: | The weight of the residue is NMT 3.5 mg (0.007% max) |
| 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 require. |
| Reducing substances: | The solution should not change its appearance. |
| Water: | NMT 0.2% |
