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  • Title: Degradation kinetics of butylmethoxydibenzoylmethane (avobenzone) in aqueous solution.
    Author: Mbah CJ.
    Journal: Pharmazie; 2007 Oct; 62(10):747-9. PubMed ID: 18236778.
    Abstract:
    The degradation kinetics of avobenzone in aqueous solution was studied at 60 +/- 0.2 degrees C over a pH range of 2.0-10.0. The degradation rates were determined by high performance liquid chromatography. The reaction is found to follow first-order kinetics and the rate constant for the decomposition at 25 degrees C is estimated by extrapolation. The breakdown of avobenzone is shown to be hydroxide ion catalyzed and the Arrhenius plots showed the temperature dependence of avobenzone degradation.
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