Open Access
Table 4
Physical-chemical characteristics of azelaic acid and pelargonic acid.
| Appearance | Density | Melting | Boiling | Solubility in | pKa | |
| (20 °C) (g/mL) | point (°C) | point (°C) | water (g/l) | (25 °C) | ||
|
|
||||||
| Azelaic | white solid | 1.443 | 109–111 | 286 100mmHg | 2.14 | 4.550 |
| acid (AA) | and 5.498 | |||||
| Pelargonic | clear yellow | 0.905 | 12.4 | 254.5 | 0.30 | 4.95 |
| acid (PA) | oily liquid | |||||
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