[en] The kinetics of radiolysis processes of 9 chlorous-organic pesticides (hexachlorbenzene, α- HCH, β-HCH, lindan, 4,4'-DDE, 4,4'-DDD, 4,4'-DDT, aldrin and heptachlor) solutions (10 - 1000 ug/l) in hexane at 13,8; 27,7; 67,4 and 105,4 kGy doses was studied and the radiation-chemical yields of conversion processes were calculated in the work. It was identified that the conversion of pesitides of 105,4 kGy dose is 65-95 percent, radiation-chemical yields are (0,009 - 1,247) · 10^-3 molecules/100 eV. Increasing of initial concentration leads to the radiation-chemical yields raising. Different radiation-chemical yields observed for various pesticide conversion processes may be due to the variations in their reaction rate with hydrogen atoms and radicals. The difference observed in various isomers (α-HCH, β-HCH and γ-HCH) may be due to the energy of spherical isomeric structures with C - Cl bonds in their molecules