Using a pulse radiolysis UV absorption technique and subsequent simulations of experimental NO₂ and FNO absorption transients, rate constants for reaction between CF₃O and CF₃O₂ radicals with NO were determined, CF₃O₂ + NO→CF₃O + NO₂ (3), CF₃O + NO→CF₂O + FNO (5). k₃ was derived to be (1.68±0.26) × 10^-11 cm³ molecule^-1 s^-1, and k₅ = (5.2±2.7) × 10^-11 cm³ molecule^-1, s^-1. Results are discussed in the context of the atmospheric chemistry of halocarbons.