Propene ignition was studied behind reflected shock waves at postshock temperatures ranging from 1270 to 1820 K and postshock pressures from 0.95 to 4.7 atm, Reactant concentrations were varied from 0.8 to 3.2% propene and from 3.6 to 15.1% oxygen diluted in argon, giving equivalence ratios ranging from 0.5 to 2.0. The pressure-based ignition delay correlation equation tau (s) = 4.2 X 10(-15) [C3H6](0.378)[O-2](-1.043) exp(48800/RTS) for mol/cm(3) and cal units was derived. The data could be accounted for using a reaction mechanism with 463 elementary reactions. (C) 2001 by The Combustion Institute.