The focus of this experimental research was to design and fabricate a fluid delivery system and bipropellant engine to characterize the combustion performance of non-toxic reactants. In this study, non-toxic or “green” reactants were classified as reactants that do not possess chlorine-containing compounds. The selected reactants consisted of blends of N,N,N',N'-tetramethylethylenediamine (TMEDA) fuel and white fuming nitric acid (WFNA) oxidizer, fired in a combustion chamber using different styles of impinging igniter designs to evaluate whether TMEDA was a viable fuel replacement for hydrazine. Specific operating conditions such as fuel and oxidizer mass flow rates and chamber pressure were varied throughout the experimental matrix. The combustion performance parameters of interest were combustion efficiency, thrust, and specific impulse. Results among the three injector designs with similar mass flow rates and chamber volume showed an unlike doublet operating at an equivalence ratio near unity had the greatest combustion efficiency. Combustion efficiencies of TMEDA/WFNA were demonstrated at 78% for a constant chamber volume, with room for improvement in characteristic length.