Phase space portraits have been constructed and analyzed for noisy (nonperiodic) data obtained in an experiment on a nonequilibrium homogenous chemical reaction. The phase space trajectories define a limit set that is an ‘attractor’? ‘ following a perturbation, the trajectory quickly returns to the attracting set. This attracting set is shown to be ‘strange’? ‘ nearby trajectories separate exponentially on the average. Moreover, the Poincaré sections exhibit the stretching and folding that is characteristic of strange attractors.