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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

A key assessment of hydrolytic stability was carried out using a procedure designed to be compatible with Method C7 Abiotic Degradation, Hydrolysis as a Function of pH of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 111 of the OECD Guidelines for Testing of Chemicals, 13 April 2004.

The kinetics of the study have been determined to be consistent with that of a pseudo-first order reaction as the graphs of log10 concentration versus time are straight lines.

No significant peaks were observed at the approximate retention time of the test item on analysis of any matrix blank solutions.

It has been observed that the rate of hydrolysis increases with an increase in pH.

The rate constant and estimated half-life at 25 °C of the test item are:

At pH 4 the estimated half life at 25 °C was > 1 year

At pH 7 the estimated half life at 25 °C was > 1 year

At pH 9 the rate constant was 3.61 X 10-8 at 25 °C with an estimated half life of 222 days.