CASR |
: | ------ |
Molecular Formula |
: | ------ |
Molecular Weight |
: | ------ |
| Specifications | |
|---|---|
| Appearance/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 the reference spectrum of glycerin (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: | 10ppm max |
| Ester: | Not less than 8.0 ml of 0.1M hydrochloric acid should require to the change the colour of the indicator. |
| Impurity A (Diethylene glycol): | 0.1% max |
| Related substances (Any impurity with a retention time less than the retention time of glycerol ): | 0.1% max |
| Related substances (Total all impurities with retention times greater than the retention time of glycerol: | 0.5% max |
| Halogenated compounds: | 35ppm max |
| Sugars: | The solution remains blue and no precipitate should form |
| Chlorides: | 10ppm max |
| Water: | 2.0% max |
| Sulphated ash: | 0.01% max |
| Assay (anhydrous substance): | 98.0% - 101.0% m/m |
