The purpose of this investigation was to study the behavior during electrolysis of the waste from the ammonia recovery still of the Solvay Process. Data was obtained to show the effect on chlorate formation of the variables; temperature, concentration of electrolyte, and current concentration. In all the experimental runs, observations were made of the weight of calcium scale formed on the cathode surface end of the anode consumption. The temperature studies were made at 25°C, 45°C., and 60°C. The concentration studies were made with waste varying in composition from the concentration given by T.P. Hou ⁽¹²⁾ for the product of the ammonia recovery still to a concentration three times as great. The current concentration studies were made at current concentrations of 2, 4, and 6 amperes per liter. Three runs were made at 8 amperes per liter. / Master of Science