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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Environmental fate & pathways

Hydrolysis

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Administrative data

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Description of key information

Key value for chemical safety assessment

Additional information

The hydrolytic stability of mesityl oxide has been tested according to OECD 111. In a preliminary test the test item was dissolved in aqueous solutions buffered at pH 4, 7 and 9 and incubated at 50 ± 1.8 °C for maximum of 5 days.

In the incubated samples at pH 4, 7 and 9 no significant reduction of the test item concentration was observed. After incubation time of 5 days the test item concentration were determined to be higher than 90 % of the initial concentrations.

Therefore, it can be estimated that the half-life time of Mesityl Oxide is higher than one year at 25 °C at all pH values tested.