Densities of canola, jatropha and soapnut biodiesel at elevated temperatures and pressures

► A capacitance type densitometer was used to measure the densities of fuels. ► Densities of three biodiesel fuels and diesel were measured at elevated temperatures and pressures. ► Densities of jatropha and soapnut biodiesel fuels were measured for the first time at elevated temperatures and pressures. ► The densities of diesel and biodiesel showed a linear relationship.