It is challenging to prepare intermetallic Ni-Al nanopowders via chemical processes due to the difficulty in reducing Al-based oxides. Previously, we successfully obtained the single phase porous nanopowders of Ni3Al and NiAl from the low porosity oxide precursors in molten LiCl-CaH2 at 600 degrees C. In this study, we examined the effects of porosity and the Ni/Al molar ratio of the oxide precursors on the BET surface areas and phases of the final Ni-Al nanopowders. The results showed that the porosity was not reflected in the final products, but the Ni/Al molar ratio defined the crystal structures. The intermetallic Ni5Al3 phase was not obtained at all, possibly due to the low rate of formation, whereas pure intermetallic Ni3Al and NiAl phases were obtained separately without any impurity phases.