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Key value for chemical safety assessment

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The hydrolysis as a function of pH of1-methyl 1-phenylethyl hydroperoxidewas assessed according to the OECD guideline 111. According to the results of this study,1-methyl 1-phenylethyl hydroperoxidecan be considered as stable at pH 4, 7 and 9.

At pH 1.2, the test item is hydrolytically unstable. The half-lives were respectively 14.1, 53.3, 311(estimation) and 1386 hours for the temperatures 50, 37, 25 and 15°C.