Current research programs are aiming to develop ionic liquids (ILs) as energetic materials for various applications. Such applications for ILs include both propulsion and explosives. Within the propulsion arena, a focus is to replace hydrazine (a highly toxic compound) as a fuel. The approach to replacing hydrazine is the synthesis and development of ILs with substantially less vapor toxicity and superior energy density. Hypergolic bipropellants are defined as fuel and ...