n-Butyl chloride reacts with sodium-tin alloys at 150-18OoC., resulting in 25-30y0 tin conversions to mixturee composed of 10-20% tetrabutyltin and 80-90Ojo tributyltin chloride.%-Propyl chloride and n-amyl chloride react with NaSn (27, Zn) giving good conversions to the RaSn-RaSnCI mixtures. Under milder conditions, reactions of ethyl chloride or n-butyl chloride with sodium-tin alloys result in substantial yields of RzSn, ...