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Description of key information

EU Method C.7 (Degradation: Abiotic Degradation: Hydrolysis as a Function of pH) (in analogy to OECD testing method 111)

Key value for chemical safety assessment

Half-life for hydrolysis:
1 min
at the temperature of:
25 °C

Additional information

pH 4.0 by 25 °C: Half-life < 1 min.

pH 7.0 by 25 °C: Half-life < 1 min.

pH 9.0 by 25 °C: Half-life < 1 min.

For technical reasons it was decided to conduct the hydrolysis tests at room temperature (25 °C). This has no adverse effect on the test results because of kinetic reasons at higher temperatures (e.g. at 50°C as originally demanded by the testing method) the half-life time for this hydrolysis reaction will also be in the range below 1 minute. Moreover, hydrolysis will even be faster at 50 °C than at 25°C but the exact difference can not be determined due to the time limitation of the analytical method.