The absorption spectra of CCl₃CCl₂ and CCl₃CCl₂O₂ radicals and the rate constant for the reaction of CCl₃CCl₂O₂ radicals with NO were measured at 296 ± 2 K using a pulse radiolysis technique. The absorption spectra were measured over the wavelength range 220-400 nm. At 230 nm σ(CCl₃CCl₂) = (271 ± 84) × 10^-20 cm² molecule^-1, and at 240 nm σ(CCl₃CCl₂O₂) = (145 ± 21) × 10^-20 cm² molecule^-1. The reaction of F atoms with CCl₃CCl₂H was determined to have a rate constant of (2.3 ± 1.6) × 10^-12 cm³ molecule^-1 s^-1. The reaction of CCl₃CCl₂O₂ with NO proceeds with a rate constant of (6.2 ± 1.6) × 10^-12 cm³ molecule^-1 s^-1. This reaction gives NO₂ and CCl₃CCl₂O radicals. In the atmosphere, 85% of the CCl₃CCl₂O radicals eliminate a Cl atom to give CCl₃C(O)Cl, and the remaining 15% decompose via C-C bond scission to give CCl₃ radicals and COCl₂. As part of the present work, relative rate techniques were used to measure rate constants at 296 ± 2 K for the reactions of Cl and F atoms with CCl₃CCl₂H of (5.2 ± 0.7) × 10^-14 and (2.0 ± 0.5) × 10^-12 cm³ molecule^-1 s^-1, respectively.