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EC number: 941-129-0 | CAS number: 1407974-32-6
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
The main functional groups in the components of the test item which have the potential to hydrolyse are esters. Although esters usually readily hydrolyse, especially in alkaline conditions, some components of the test item may have a reduced hydrolytic potential due to them being essentially hydrophobic.
Key value for chemical safety assessment
Additional information
Testing was not carried out using 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 for the following reasons:
• The test item is a complex mixture for which the test guidelines for hydrolysis are not recommended. This is not only because components could have different hydrolytic rates but also hydrolysis products can be analytically indistinguishable from the starting components.
• The water solubility of the test item as a whole was expected to be loading rate dependent but for some of the components it was expected to be very low. Therefore, the test solution concentration required that would dissolve all the components would be impractically low in order to perform the test and a sufficiently sensitive analytical method was not available. Overall, these issues would make hydrolysis testing unfeasible.
The main functional groups in the components of the test item which have the potential to hydrolyse are esters. Although esters usually readily hydrolyse, especially in alkaline conditions, some components of the test item may have a reduced hydrolytic potential due to them being essentially hydrophobic.
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