Inorganic chemistry, hexene is a hydrocarbon with the chemical formula C6H12. The prefix "hex" is derived from the fact that there are 6 carbon atoms in the molecule, while the "-ene" suffix denotes that there is an alkene present—two carbon atoms are connected via a double bond. There are several isomers of hexene,[1] depending on the position and geometry of the double bond in the chain. One of the most common industrially useful isomers is 1-hexene, an alpha-olefin. Hexene is used as a comonomer in the production of polyethylene.
The following is a partial list of hexenes.
| Name | Structural formula | CAS Number | Melting point[2] (°C) |
Boiling point[2] (°C) |
Density[2] (g/cm3) |
Refractive index[2] (589 nm) |
|---|---|---|---|---|---|---|
| 1-hexene |  |
592-41-6 | −139.76 | 63.48 | 0.6685 (25 °C) | 1.3852 (25 °C) |
| (E)-2-hexene |  |
4050-45-7 | −133 | 67.9 | 0.6733 (25 °C) | 1.3936 (20 °C) |
| (Z)-2-hexene |  |
7688-21-3 | −141.11 | 68.8 | 0.6824 (25 °C) | 1.3979 (20 °C) |
| (E)-3-hexene |  |
13269-52-8 | −115.4 | 67.1 | 0.6772 (20 °C) | 1.3943 (20 °C) |
| (Z)-3-hexene |  |
7642-09-3 | −137.8 | 66.4 | 0.6778 (20 °C) | 1.3947 (20 °C) |
There are a total of 13 different alkene isomers of hexene, excluding additional geometric (E/Z) and optical (R/S) isomers:
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