Chemical Action of γ-Radiation from 80 Br

DURING the course of an investigation into the exchange of radiobromine between a number of organic and inorganic bromides, it has been observed that with certain of the latter, for example, aluminium bromide, and a wide variety of organic bromides, a complete exchange of all the bromine atoms in the system takes place very quickly at room temperature. With many other inorganic bromides, however, there is apparently no exchange, but an extraction of the 18-min. 80Br isotope from the radioactive organic bromide.