Abstract

1. Free radicals inγ-irradiated acetic acid, its aqueous solutions, and aqueous solutions of potassium acetate at 77°K were studied by the methods of ESR and optical spectroscopy. The anion radicals CH3COOH− or CH3COO2− (in all systems), CH3 radicals (in solutions of CH3COOH and CH3COOK), and e capt − (in solutions of CH3COOK) were identified, and their yields were measured. 2. Thermal and photostimulated conversions of the free radicals in the indicated systems were investigated. 3. A mechanism was suggested for the origin of radicals in acetic acid and its aqueous solutions.

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