
2-Ethylhexanol (MF: C8H18O MW: 130.23) is an important branched-chain fatty alcohol. Due to its molecular structure containing 8 carbon atoms and a branched chain, it is also commonly referred to as ‘isooctanol’ and is a widely used basic chemical raw material in industry.
The branched-chain structure of 2-ethylhexanol confers unique properties: low volatility, good compatibility, and affinity for both polar and non-polar substances. These characteristics make it a key raw material for industrial products such as plasticisers, solvents, and surfactants, occupying an important position in the chemical industry supply chain.
| Melting point | −76°C (lit.) |
| Boiling point | 183–186°C (lit.) |
| Density | 0.833 g/mL at 25°C (lit.) |
| Vapour density | 4.49 (vs air) |
| Vapour pressure | 0.2 mmHg (20°C) |
| Refractive index | n20/D 1.431 (lit.) |
| Flash point | 171°F |
| Solubility | Soluble in water |
| Acidity coefficient (pKa) | 15.05 ± 0.10 |
| Odour | Sweet and faint floral scent |
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