“…Very little carbonaceous material was formed during the reaction. Taft and Stratton (111) studied the vapor-phase photochemical chlorination of isobutane with regard to the effects of temperature, ratio of concentration of reactants, light intensity, presence of water vapor, absolute rates of flow, and surface area and construction of the apparatus. It was found that the relative rates of substitution of the hydrogen atoms in the range 18°to 55°C.…”