The radiolysis of solutions of TODGA (N,N,N′,N′-tetra-n-octylamide of diglycolic acid) in mixtures of Isopar-M (iso-paraffins C13–C14) with n-nonanol or n-decanol at 500 kGy leads to predominant decomposition of TODGA. The radiation-chemical yield of this process is 0.4–0.5 μmol J−1. The main products of the direct effect of ionizing radiation on TODGA are N,N-dioctylacetamide and 2-hydroxy-N,N-dioctylacetamide. The indirect effect of ionizing radiation is mainly due to reactions with alkoxy radicals and leads to the breaking of the C–N and C–C bonds in the α-position relative to the carbonyl group. An increase in the alcohol content in the solution results in the increase of the variety of radiolytic products, in the enhancement of gas evolution, and in the increase in the yield of TODGA decomposition. The replacement of n-decanol with n-nonanol does not significantly affect the radiolytic stability of the solutions.

中文翻译：

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脂肪醇添加剂对 Isopar-M 中 TODGA 辐解降解的影响

TODGA（二乙醇酸的 N,N,N',N'-四正辛基酰胺）在 Isopar-M（异链烷烃 C13-C14）与正壬醇或正癸醇的混合物中的溶液在 500 下的辐射分解kGy 导致 TODGA 的主要分解。该过程的辐射化学产率为 0.4–0.5 μmol J-1。电离辐射直接作用于TODGA的主要产物是N,N-二辛基乙酰胺和2-羟基-N,N-二辛基乙酰胺。电离辐射的间接影响主要是由于与烷氧基的反应，并导致相对于羰基的 α 位的 C-N 和 C-C 键断裂。溶液中醇含量的增加导致辐射分解产物种类的增加、气体逸出的增强以及TODGA分解产率的增加。