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Diallyl 2,2´-oxydiethyl dicarbonate was investigated regarding abiotic hydrolysis as a function of pH according to OECD guideline 111 (Mullee, D.M., 2005). A nominal concentration of 0.05 g/L of the test substance was used. The test was performed at different temperatures and the following sterile buffer solutions: pH 4 (phtalate buffer), pH 7 (phosphate buffer), and pH 9 (borate buffer). HPLC with MS detection was used to analyze the substance at the beginning and the end of the test. An increase of the hydrolysis rate will occur with increasing pH values. The following half-lives were obtained at 25 °C: t1/2 (pH 4) > 1 year, t 1/2 (pH 7) = 280 days, and t1/2 (pH 9) = 68.4 hours.