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EC number: 218-465-5 | CAS number: 2157-01-9
-Test substance was stable at pH 4 and pH 7, both at 50 ºC in preliminary test. -The half life and the rate constant of this chemical at pH 9 were 58.7 days and 4.92 E-4/hour, at 25 ºC in water,respectively.
Using a valid modeling method, the test substance was stable at pH 4 and pH 7, both at 50 ºC. The half life and the rate constant of this chemical at pH 9 were 58.7 days and 4.92 E-4/hour, at 25 ºC in water, respectively.
Read across to category member 2-ethylhexyl methacrylate:
stable at pH 4 and pH 7, hydrolyses slowly at pH 9
Abiotic degradation by hydrolysis of 2-ethylhexyl methacrylate was measured in an OECD guideline study. 2-EHMA was stable at pH 4 and pH7. At pH9 the measured half-life (t 1/2 ) for 2-EHMA at 25 °C is 58 days. Since 2-EHMA is readily biodegradable, hydrolysis appears not to be an important aqueous degradation process for this chemical.
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