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Environmental fate & pathways

Hydrolysis

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Description of key information

The estimated half-life at 25 °C is greater than 1 year at pH 4, 7 and 9.

Key value for chemical safety assessment

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

Additional information

The potential of the test material to undergo hydrolysis was investigated in accordance with the standardised guidelines OECD 111 and EU Method C.7 under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al. (1997).

The hydrolytic stability of the test material was investigated in a preliminary study for 5 days at pH 5, 7 and 9. The concentration of the sample solution was determined by ion chromatography (IC).

As less than 10 percent of hydrolysis was observed after 5 days, the test material is considered to be hydrolytically stable and as such no additional testing was required.

The estimated half-life at 25 °C is greater than 1 year at pH 4, 7 and 9.