The kinetics of CF2=CF-CF=CF, reaction With O-3 (k(1)) and NO3 radicals (k(2)) were measured using a smog chamber/FTIR technique. The value of k(1) was determined as (1.14 +/- 0.94) x 10(-16)exp [-(2800 +/- 225)/T] in the range 225-308 K by means of an absolute rate method and k(2) was determined to be (1.5 +/- 0.2) x 10(-15) cm(3) molecule(-1) s(-1) at 298 K by a relative rate method. The tropospheric lifetime of CF2=CF-CF=CF, was estimated at 6.3 and 0.8 years with respect to its reaction with O-3 and NO3 radicals, respectively. (c) 2005 Elsevier B.V. All rights reserved.