Determination of the electron paramagnetic resonance spectra of sodium, potassium, and rubidium solutions in ethylenediamine is reported. The determination of the absorption spectra of sodium, sodium plus sodium iodide, potassium, and rubidium solutions in ethylenediamine is presented. A determination was made of the electrical conductivity of potassium solutions in ethylenediamine as a function of absorptivity. Preliminary observations were made of the kinetics and the products of the decomposition reaction. (W.L.H.)