LOW TEMPERATURE IRRADIATION OF MIXTURES OF HBr AND C2H4

A 90-c cobalt-60 source was used to irradiate solid equimolar mixtures of HBr and C/sub 2/H/sub 4/ at -218 and -209 C and liquid mixtures at -165 C. An addition reaction was observed at all three temperatures, the product of which was identified as ethyl bromide. (J.R.D.)