Radiation decomposition of p-nitroperoxybenzoic acid in solution. [Gamma rays]
p-Nitroperoxybenzoic acid is reduced by carboxyl radical anions which arise from the interaction of .OH with formic acid or formate ions at pH greater than 3. The resulting electron adduct of p-nitroperoxybenzoic acid (I) eliminates an .OH radical which subsequently propagates a chain reaction. The inverse square-root law for the dose rate has been confirmed for the chain process. G values greater than 200 were observed for the decomposition of the peroxy acid. An activation energy of 2.7 kcal mol/sup -1/ has been attributed to the elimination of .OH from radical anion I. 2-Hydroxyl-2-propyl radicals, formed through hydrogen abstraction from 2-propanol by .OH, also sustain a chain reaction in solutions of p-nitroperoxybenzoic acid, but the kinetic chain length is considerably reduced in comparison with reactions of carboxyl radical anions.
- Research Organization:
- East Carolina Univ., Greenville, NC
- OSTI ID:
- 7355040
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 80:12; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400600* -- Radiation Chemistry
CARBOXYLIC ACIDS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
ELECTROMAGNETIC RADIATION
G VALUE
GAMMA RADIATION
HYDROXYL RADICALS
IONIZING RADIATIONS
MONOCARBOXYLIC ACIDS
NITRO COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADICALS
RADIOLYSIS