TH-dimer
| Names | |
|---|---|
| Other names Tetrahydromethylcyclopentadiene dimer; Tetrahydrodimethyldicyclopentadiene; THDMDCP; RJ-4; RJ4 | |
| Identifiers | |
| 3D model (JSmol) | |
| ChemSpider | |
| EC Number | 
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| PubChem CID | |
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| Properties | |
| C12H20 | |
| Molar mass | 164.292 g·mol−1 | 
| Density | 0.915 g/cm3 | 
| Hazards | |
| Flash point | 60 °C (140 °F; 333 K) | 
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references | |
TH-dimer, also called tetrahydromethylcyclopentadiene dimer or RJ-4, is a synthetic jet fuel used in jet engines for missiles. RJ-4 was originally developed for the ramjet engine on RIM-8 Talos naval surface-to-air missile.
The fuel is non-volatile, so it is safe to use on ships or submarines. It has a high flash point minimum of 60 °C (140 °F).
Chemically, TH-dimer is a mixture of isomeric saturated hydrocarbons derived from hydrogenation of the dimer of methylcyclopentadiene.