TH-dimer

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TH-dimer, RJ-4 or misspelt as RJ4, also called tetrahydromethylcyclopentadiene [1] is a rocket fuel used in missiles. 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 [2].

TH-dimer is used in the turbofan engine of the BGM-109 Tomahawk cruise missile.