1 | Description | A clear, colourless, viscous liquid; practically odourless; hygroscopic. | A clear, colourless, vicous liquid; practically odrourless; hygroscopic. |
2 | Solubility | Complies | Miscible with water, with ethanol (96%), with acetone, and with chloroform; Soluble in ether and immiscible with fixed oils |
3 | Identification A (By IR) | Complies | IR spectra of the sample should be concomitant with IR spectra of the standard |
4 | Identification B (Diethylene glycol) | Not detected | NMT 0.1% |
5 | Identification B (Ethylene glycol) | Not detected | NMT 0.1% |
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° to 189°C |
10 | Identification(By Melting point) | 123°C | Crystals should melt between 121°C to 128°C |
11 | Appearance of solution | Complies | Clear and colourless |
12 | Relative density (20°C) | 1.037 | 1.035 -1.040 |
13 | Refractive index (20°C ± 0.5°C) | 1.432 | 1.431 -1.433 |
14 | Specific gravity, 25°C | 1.036 | 1.035-1.037 |
15 | Oxidising substances | Complies | NMT 0.2 mL of 0.05M sodium thiosulfate should require. |
16 | Reducing substances | Complies | The solution does not change its appearance. |
17 | Heavy metals | Less than 5 ppm | NMT 5 ppm |
18 | Acidity | Complies | Not more than 0.05 mL of 0.1 M sodium hydroxide should require to change the colour of the indicator to blue |
19 | Diethylene glycol | Not detected | NMT 0.1 % |
20 | Ethylene Glycol | Not detected | NMT 0.1 % |
21 | chloride | Less than 70ppm | NMT 70ppm |
22 | Sulphate | Less than 60ppm | NMT 60ppm |
23 | Sulphated ash | 0.003% | NMT 0.007% |
24 | Water | 0.058% | NMT 0.2% |
25 | Assay | 99.99% | NLT 99.5% |
26 | Total aerobic microbial count | Less than 100 CFU/ml | NMT 100 CFU/ml |
27 | Total Yeast & mold count | Less than 10 CFU/ml | NMT 10 CFU/ml |
28 | Bacterial endotoxins | Less than 2.5EU/ml | NMT 2.5EU/ml |