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Hydrolysis

Description of key information

Testing was not carried out using OECD 111 (13 April 2004) and Method C.7 Abiotic degradation, Hydrolysis as a Function of pH of Commission Regulation (EC) No 440/2008 (30 May 2008). The reasons for this decision were (i) Water solubility of the test item, in which all components were dissolved, was considered to be too low to perform the test and analytical methods would not be sensitive enough to detect the test material. Additionally, the test solution would need to be half this concentration to satisfy the test requirements (ii) The test item is a complex mixture to which the test method is not ideally suited. This is because components that are unstable could have significantly different hydrolytic rates and, if stable components were also present, this could lead to a conflicting result. From information provided by the Sponsor, the main functional groups within the components of the test item were esters, and these can hydrolyse at environmentally relevant pH and temperature, especially in basic conditions. However, limited aqueous solubility is considered to reduce the significance of ester hydrolysis and the test material as a whole is not expected to hydrolyse readily at environmentally relevant pH and temperature.