1 | Description | Clear, colourless, viscous liquid having a slight, characteristic taste. Is practically odorless. Absorbs moisture when exposed to moist air. | Clear colourless, viscous liquid having a slight, characteristic taste. Is practically odorless. Absorbs moisture when exposed to moist air. |
2 | Solubility | Complies | Misible 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. |
3 | Identification (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the standard |
4 | Identification (Diethylene glycol) | Not detected | NMT 0.015% |
5 | Identification (Ethylene glycol) | Not detected | NMT 0.015% |
6 | Identification (By GC Chromatogram) | Complies | The retention time of the propylene glycol peak of the sample solution corresponds to that of the standard solution |
7 | Identification (by Relative density, 20°C) | 1.037 | 1.035 - 1.040 |
8 | Identification (By Refractive index, 20±0.5°C) | 1.432 | 1.431 - 1.433 |
9 | Identification (By Boiling Point) | 186°C | 184° - 189°C |
10 | Identification(By Melting point) | 123°C | Crstals should melt between 121 °C to 128 °C. |
11 | Appearance of Solution | Complies | The solution Clear and colourless |
12 | Specific gravity, 25°C | 1.036 | 1.035 - 1.037 |
13 | Relative density, 20°C | 1.037 | 1.035 - 1.040 |
14 | Refractive index (20°C ± 0.5°C) | 1.432 | 1.431 - 1.433 |
15 | Assay | 99.98% | NLT 99.5% |
16 | Residue on ignition | 0.002% | The weight of the residue is NMT 3.5 mg (0.007% max) |
17 | Chloride (Cl) | Less than 70ppm | NMT 70ppm |
18 | Sulphate (SO4) | Less than 60ppm | NMT 60ppm |
19 | Acidity | Complies | Not more than 0.05 mL of 0.1 M sodium hydroxide should required to change the colour of the indicator to blue. |
20 | Oxidising substances | Complies | Not more than 0.2 mL of 0.05 M sodium thiosulfate should required. |
21 | Reducing substances | Complies | The solution does not change its appearance. |
22 | Water | 0.055% | NMT 0.2% |
23 | Total aerobic microbial count | Less than 100 CFU/ml | NMT 100 CFU/ml |
24 | Total Yeast & mold count | Less than 10 CFU/ml | NMT 10 CFU/ml |
25 | Bacterial endotoxins | Less than 2.5 EU/ml | NMT 2.5 EU/ml |