pyrochemicaladj.

1849 P. F. H. Fromberg tr. G. J. Mulder Chem. Veg. & Animal Physiol. 44 A low temperature..is as capable of changing complex combinations, as one more elevated is of transforming all the organic bodies in a large series of pyrochemical products [Du. van pyrochemische producten], whose characters entirely depend on the temperature.

1896 Science 24 July 110/2 The Laboratory contains..a room for pyrochemical research.

1908 Illinois State Geol. Bull. 9 149 Experimental evidence indicates that variation in the fineness of grain controls many of the physical and pyrochemical properties exhibited by clays.

1949 Jrnl. Industr. Chem. 41 1737/2 Cuprous oxide of pyrochemical origin is characterized by high apparent density, low oil absorption, and a rather dull red color.

1997 Progress in Nucl. Energy 31 175 Pyrochemical processes..appears [sic] suitable for recovery and recycling actinides from spent fuels from light water cooled reactors.