CASR |
: | 56-81-5 |
Molecular Formula |
: | (CH2OH)2CHOH |
Molecular Weight |
: | 92.09 |
| Specifications | |
|---|---|
| Description: | Syrupy liquid, unctuous to the touch, colourless or almost colourless, clear, very hygroscopic. |
| Solubility: | Miscible with water and ethanol(96%),slightly soluble in acetone, practically insoluble in fatty oils and in essential oils |
| Identification A (By Refractive index, 20±0.5°C): | 1.470 - 1.475 |
| Identification B (By IR): | IR spectra of the sample solution should be concomitant with IR spectra of the reference spectrum of glycerol (85%) |
| Identification C (By Relative density): | 1.258-1.268 |
| Appearance of solution: | Clear and colorless solution |
| Acidity or Alkalinity: | Not more than 0.2ml of 0.1M sodium hydroxide is required to change the color of the indicator to pink. |
| Refractive index,20° C: | 1.470 - 1.475 |
| Aldehydes: | NMT 10ppm |
| Ester: | Not less than 8.0 ml of 0.1M hydrochloric acid should required to the change the colour of the indicator. |
| Impurity A (Diethylene glycol): | NMT 0.1% |
| Related substances (Any impurity with a retention time less than the retention time of glycerol ): | NMT 0.1% |
| Related substances: Total of all impurities with retention times greater than the retention time of glycerol: | NMT 0.5% |
| Halogenated compounds: | NMT 35ppm |
| Sugars: | The solution remains blue and no precipitate should form. |
| Chlorides: | NMT 10ppm |
| Water: | NMT 2.0% |
| Sulphated ash: | NMT 0.01% |
| Assay (anhydrous substance): | 98.0% - 101.0% m/m |
