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No data are available on the hydrolytic stability of Fatty acids, C16-18, 2-ethylhexyl esters. Due the ready biodegradability hydrolysis testing is not required under REACh. Two supporting study entries (QSAR and a read cross to Fatty acids, C16-18 and C18-unsatd., branched and linear, Bu esters CAS: 163961 -32 -8) indicate that the test substance is hydrolytically stable with a half-life of >1 year.

Based on a QSAR estimation using SRC AOP v1.92, the substance is susceptile to indirect photodegradation in air. The estimated half time for the reaction with OH-radicals is in the range of 11.9 to 13.04 h (24 h day; OH-concentration 0.5E+06).