TH-dimer

TH-dimer, RJ-4 or misspelt as RJ4, also called tetrahydromethylcyclopentadiene 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.

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