FTIR smog chamber techniques were used to measure k(Cl + (CF ₃)₂CFOCH₃) = (1.80 ± 0.42) × 10^-13, k(Cl + (CF₃)₂CFOCHO) = (1.47 ± 0.56) × 10^-14, and k(OH + (CF₃) ₂CFOCH₃) = (1.55 ± 0.24) × 10^-14 cm³ molecule^-1 s^-1. The chlorine-atom initiated oxidation of (CF₃)₂CFOCH₃ in air in the absence of NO_X results in conversion of (CF₃) ₂CFOCH₃ into the formate, (CF₃) ₂CFOCHO, in a yield indistinguishable from 100%. In the presence of NO_X, the (CF₃)₂CFOCHO yield was decreased by approximately 17%, which we attribute to the formation of peroxy and/or alkoxy nitrates. The atmospheric lifetime of (CF₃)₂CFOCH ₃ was estimated to 3.7 years. The infrared spectrum of (CF ₃)₂CFOCH₃ was measured and a global warming potential GWP₁₀₀ = 354 was determined.