CASR |
: | 56-81-5 |
Molecular Formula |
: | (CH2OH)2CHOH |
Molecular Weight |
: | 92.09 |
| Specifications | |
|---|---|
| Appearance/Description: | Clear, colorless, syrupy liquid, unctuous to the touch, Its solutions are neutral to litmus |
| Solubility: | Miscible with water, ethanol(96%) and with alcohol .slightly soluble in acetone, Insoluble in fatty oils, in essential oils in chloroform, in ether, and in fixed and volatile oils. |
| Identification (by IR): | IR spectra of the sample should be concomitant with IR spectra of the corresponding standard |
| Identification (Diethylene glycol): | NMT 0.10% |
| Identification (Ethylene glycol): | NMT 0.10% |
| Identification (By GC Chromatogram): | The retention time of the glycerin peak of the sample solution corresponds to that obtained in the standard solution |
| Identification (By Refractive index, 20±0.5°C): | 1.470 - 1.475 |
| Identification (By Relative density): | 1.258-1.268 |
| Appearance of solution: | Clear and colorless solution |
| Color: | Color of the sample should not be darker than the color of the standard |
| 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 |
| Specific gravity, 25°C: | NLT 1.249 |
| Aldehydes: | NMT 10ppm |
| 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% |
| Related compounds : Individual impurity: | NMT 0.1% |
| Related compounds : Total impurities: | NMT 1.0% |
| Halogenated compounds: | NMT 35ppm |
| Sugars: | The solution remains blue and no precipitate should form |
| Chlorides: | NMT 10ppm |
| Sulphate (SO4): | NMT 20ppm |
| Water: | NMT 2.0% |
| Sulphated ash / Residue on ignition: | NMT 0.01% |
| Assay (anhydrous substance): | 99.0% - 101.0% |
| Chlorinated compounds: | NMT 30ppm of Cl |
| Fatty acids and esters: | NMT 1.0ml of 0.5N sodium hydroxide shall consume. |
| Ester: | Not less than 8.0 ml of 0.1M hydrochloric acid is required to the change the color of the indicator. |
