Thermal and Radiation Stability of Extractive Mixtures Based on Todga

The method of differential scanning calorimetry has been used to study the thermal stability of unirradiated and irradiated extractive mixtures containing 0.15 \M of the extractive agent N,N,NMODIFIER LETTER PRIME,NMODIFIER LETTER PRIME-tetra-n-octyldiglycola (TODGA) in Isopar-M diluent with n-decanol or n-nonanol in relation to the sequence of contact with nitric acid. It was shown that heating within the range 50-250 degrees C causes exothermic thermochemical processes in the starting extractive systems in the presence of nitric acid. The radiolysis stimulates the decomposition of an organic solution with release of gaseous products and changes both the thermal stability of the solutions under study and their interaction with nitric acid.