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The QSAR calculated rate constant for the OH sensitized photodegradation of 2,3-Epoxypropyl neodecanoate, oligomeric reaction products with toluene-4-sulfonic acid (surrogate: 2-hydroxy-3-[[(4-methylphenyl)sulphonyl]oxy]propyl tert-decanoate) is approximately 18.2179E-12 cm3/(molecule * s). At 500,000 OH radicals / cm3 (typical for central), this corresponds to a half-life of 21 hours. No unequivocal hydrolysis but some interconversion of constituents was observed in studies at pH levels from 4 to 9.