Who can give me the parameters of Eutectic Gallium-Indium (EGaIn)?

I want to add this liquid metal to the material library of HFSS but I cannot find its parameters such as Relative Permittivity, Relative Permeability, Bulk Conductivity etc. Also, do I need fill out all of the options in View/Edit Material page when adding a new material into the library?

Thanks a lot.