function der_properties_Txi
extends TILMedia.BaseClasses.PartialLiquidFunction;
input SI.Temperature T "Temperature";
input SI.MassFraction[:] xi "Mass fractions of the first nc-1 components";
input TILMedia.Internals.TILMediaExternalObject liquidPointer;
input Real der_T "Temperature";
input Real[:] der_xi "Mass fractions of the first nc-1 components";
output Real der_d "Density";
output Real der_cp "Specific heat capacity cp";
output Real der_beta "Isobaric expansion coefficient";
end der_properties_Txi;