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Environmental fate & pathways

Phototransformation in air

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Phototransformation in air:

Key value for chemical safety assessment

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Phototransformation in air:

Half life of less than 1 day is estimated for reaction of Reaction mass of 2,6-di-tert-butyl-p-cresol, 4,6-di-tert-butyl-o-cresol and 2,6-di-tert-butylphenol components with hydroxyl radicals in the atmosphere at 25oC [AOPWIN Program, v.1.92].

Overall QSARs estimated half-life for degradation of the substancecomponents in air based upon AOPWIN Model is 2.6 to 7 hours.

Based on the data on photochemical degradation of Reaction mass of 2,6-di-tert-butyl-p-cresol, 4,6-di-tert-butyl-o-cresol and 2,6-di-tert-butylphenol components in the air, it is considered to degrade in the atmosphere via photooxidation process.