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Description of key information

The substance hydrolyse.

Key value for chemical safety assessment

Additional information

One GLP guideline study on the hydrolytic degradation according to EPA guideline N, Series 161 -1 is available (Smith, 1998). The substance hydrolysed rapidly to its free acid under basic conditions with a half-life on the order of minutes (DT50 of 0.021 d at pH 9 and 25°C) . Under more acidic conditions the rate of hydrolysis was reduced, such that the half-life at pH 5 and 25 °C was approximately 98.6 days.

De-esterification was the only significant hydrolysis mechanism found at any pH or temperature and the free acid was quite stable under the conditions of this investigation. Further transformation products were negligible.