A study on radiation-induced dechlorination of hexachlorobenzene in al
kaline ethanol solution was Performed. At the beginning a higher effic
iency for dechlorination has been found. The dechlorination is a chain
reaction. The solubility of radiolytic products in ethanol-water(v/v
1:4) is higher than that of HCB in the same solvent. Hexachlorobenzene
could be transfered into the solution and degraded partially if the s
oil contaminated by hexachlorobenzene was mixed with ethanol, then irr
adiated with gamma-rays.