Thermal decomposition of Ba(C2O4).0.5H2O was studied by TG in dry N2 flow at constant temperature dependence of and with linearly increasing temperature The process is dominated by the random nucleation and subsequent linear growth process. Anal. of the crystal changes agrees with this conclusion.

Key words: CRYSTAL STRUCTURE DETERMINATION, REACTION KINETICS, CRYSTAL GROWTH, HYDRATE, DEHYDRATION, THERMOGRAVIMETRY, BARIUM OXALATE