The qualities of this Repsol fuel make it perfect for jet engine turbines in civil aviation. It is a kerosene that comes from the distillation of crude oil, which is the raw material of the refining industry.
Its primary function is to supply power to the aircraft. The key parameters are its energy content and the quality of combustion.
It's colorless or slightly yellow, with an approximate average density of 6.7 lb/US gallon (0.8 kg/L), and it can be flammable at temperatures greater than 100.4°F (38°C) in the presence of a flame or spark. If there were only one thing worth mentioning, it'd be the great heat potential that enables maximum possible energy at minimum weight. It also has an excellent level of cold resistance with very low crystallization point temperatures, since at the altitudes at which the aircraft fly temperatures are very low.
Great product stability, to ensure that it is not affected by oxidation processes, as well as a high degree of thermal stability. In addition to providing energy, the fuel is also used as the hydraulic fluid in the engine control systems and as a coolant for certain fuel system components.
Here you can download documents where we explain in greater detail the composition of JET A-1 and its properties.