This paper reports detailed product distributions for the devolatilization of five coals during transient heating at a rate of 7000 K/s and a pressure of 1.0 MPa. Major noncondensable gases were resolved into C-1-C-4 hydrocarbons, oils, CO, CO2, H-2, and H2O. Fuel-N release was monitored in terms of the tar-N and char-N contents. Elemental compositions are reported for the tars and chars. All major products were monitored in individual tests; therefore, closures on the balances on total mass, carbon, hydrogen, and nitrogen clearly indicate the quality of these data sets. All the measurements were resolved in fine time increments from the onset of primary devolatilization through the attainment of ultimate yields. The novel heating configuration in the tests essentially eliminated secondary volatiles pyrolysis chemistry, so the product distributions are especially well-suited to validating the proposed devolatilization mechanisms. FLASHCHAIN, which is one of the network depolymerization models, interprets the most important aspects of the pressure effect on devolatilization for all but one coal, based solely on the proximate and ultimate analyses of the coals and the operating conditions in the tests.