The results are reported for a series of measurements of the propagation rate coefficient (k(p)) of butyl acrylate obtained from pulsed-laser polymerization (PLP). Previous attempts reported in the literature to use PLP for this monomer have failed because the data did not satisfy the internal consistency tests afforded by PLP. The problem was obviated by carrying out measurements at very low temperatures and with very short times between laser pulses. Data for k(p) were obtained over the range -65 to -7 degrees C which satisfy PLP consistency tests (invariance of the apparent It, value to laser pulse frequency, etc.). The results fit k(p) (dm(3) mol(-1) s(-1)) = 10(7.2) exp(-17.3 kJ mol(-1))/RT); the confidence ellipse for these parameters is provided. These data extrapolate to a value of k(p) = 2.7 x 10(4) dm(3) mol(-1) s(-1) at 50 degrees C. The higher value of the frequency factor of butyl acrylate compared to that of butyl methacrylate can be rationalized in terms of hindered rotations in the transition states.