Substance profile
2-Ethyl-1,3-Hexanediol
2-Ethyl-1,3-Hexanediol is a slightly oily liq and is odorless.
01 · Identification
What 2-Ethyl-1,3-Hexanediol is
2-Ethyl-1,3-Hexanediol is a slightly oily liq and is odorless. Its molecular formula is C8H18O2 and its molecular weight is 146.23 g/mol. It boils at 244 °C, melts at -40 °C, is miscible with water.
Under the GHS it carries the signal word Danger.
Other names for 2-Ethyl-1,3-Hexanediol
- 2-ethylhexane-1,3-diol
- octylene glycol
- ethoexadiol
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H318 | Causes serious eye damage. |
03 · Physical and chemical properties
2-Ethyl-1,3-Hexanediol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 244.2 °C (471.6 °F) | at 760 mmHg | HSDB |
| 243.1 °C (469.6 °F) | at 760 mmHg | DOE PAC | |
| Melting point | -40 °C (-40 °F) | HSDB | |
| Density | 0.9325 g/cm³ | at 22 °C | HSDB |
| 0.9422 g/cm³ | at 20 °C | DOE PAC | |
| 0.941 g/cm³ | range, midpoint shown, at 20 °C | HSDB | |
| Solubility | SOL IN WATER 0.6% WT/WT; SOLUBILITY OF WATER IN ETHOHEXADIOL 10.8% WT/WT; SOL IN ETHANOL, ISOPROPANOL, PROPYLENE GLYCOL, CASTOR OIL | HSDB | |
| MISCIBLE WITH CHLOROFORM, DIETHYL ETHER | HSDB | ||
| Vapor pressure | 0.01 mmHg | below this value, at 20 °C | HSDB |
| Flash point | 126.67 °C (260 °F) | HSDB | |
| 127 °C (260.6 °F) | Haz-Map | ||
| Autoignition temperature | 360 °C (680 °F) | HSDB | |
| Vapor density | 5.03 (air = 1) | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.