478. CHAUDRON, G., AND BÉNARD, J. [Process of Decomposition of Ferrous Oxide.] Bull. soc. chim. France, 1949, D, pp. 117-119; Chem. Abs., vol. 43, 1949, p. 6901.

478. CHAUDRON, G., AND BÉNARD, J. [Process of Decomposition of Ferrous Oxide.] Bull. Soc. Chim. France, 1949, D, pp. 117-119; Chem. Abs., vol. 43, 1949, p. 6901.

Decomposition of FeO at 300°-570° is exclusively a solid-phase reaction. The reaction was followed by thermomagnetic analysis. A phase diagram is given for the system FeO-Fe₃O₄-Fe. The rate of decomposition was determined to be a function of the temperature of preparation, the concentration of O₂ during preparation, and the presence of particles of Fe or Fe₃O₄.