There is an increasing interest in the development of room temperature fuel cells for consumer electronic applications. Ethyl formate is an ideal fuel-more reactive than methanol and relatively harmless. An attempt to construct an ethyl formate room temperature fuel cell is described. Though the half cell performance of both the Pt/WO3 anode and the Pt/C cathode give encouraging results, the poisoning of the cathode by ethyl formate led to a very low full cell performance. It is concluded that unless efficient permselective membranes are developed, room temperature dissolved fuel fuel cells are not practical.