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| Other names Tetrahydromethylcyclopentadiene dimer; Tetrahydrodimethyldicyclopentadiene; THDMDCP; RJ-4; RJ4 | |
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| Properties | |
| Chemical formula | C12H20 |
| Molar mass | 164.292 g·mol |
| Density | 0.915 g/cm |
| 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 , 100 kPa).
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TH-dimer, also called tetrahydromethylcyclopentadiene dimer or RJ-4, is a synthetic jet fuel used in jet engines for missiles. RJ-4 was originaly 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.
References
- Naval Submarine Base New London
- Schmidt 2022b, p. 4456.
- "Modern US Military Turbine Missile Fuel Specifications". Archived from the original on 2012-02-05. Retrieved 2006-09-12.
- US 4177217, Janoski, Edward J.; Mitchell, Richard E.; Schneider, Abraham, "Continuous conversion of dimethyldicyclopentadiene to endo-dimethyldicyclopentadiene, a missile fuel", issued 1979
Bibliography
- Schmidt, Eckart W. (2022a). "Tetrahydrodimethyldicyclopentadiene". Cycloaliphatic Hydrocarbons. Encyclopedia of Liquid Fuels. De Gruyter. pp. 1273–1275. doi:10.1515/9783110750287-015. ISBN 978-3-11-075028-7.
- Schmidt, Eckart W. (2022b). "Ramjet Fuel RJ-4". Ramjet Fuels. Encyclopedia of Liquid Fuels. De Gruyter. pp. 4455–4458. doi:10.1515/9783110750287-037. ISBN 978-3-11-075028-7.
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