Patent ID: 6221414
Filing Date: 2001-04-24
Classification: A62D,C07C

Abstract:
Process for treating fruits and vegetables after harvesting, using, as a plant-protection treatment composition, a mixture with water of a reaction medium resulting from the implementation of steps of purification of a plant-protection product contaminated with impurities of aromatic primary amine type, the said steps comprising:a) placing in contact with stirring, at a temperature between 15 and 25.degree. C., an aqueous solution of an alkali metal nitrite with an organic solution prepared by dissolving the said plant-protection product to be purified in a solvent selected from the group consisting of a nonionic surfactant, a C.sub.2 -C.sub.12 glycol and mixtures thereof;b) addition of a strong inorganic acid to the resulting reaction medium, while stirring at the said temperature;c) followed by heating of the reaction medium to a temperature of between 30 and 70.degree. C.