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Phototransformation in air

Bis(2-ethylhexyl) carbonate entering the atmosphere will be relatively quickly photodegraded by reaction with OH radicals. Based on a OH radical concentration of 5E05 radicals/cm³ (24 -h d) and a reaction rate constant k(OH)=21.8130E-12 cm³/molecule x sec an atmospheric half-life t1/2=17.7 h at 25°C can be calculated. The photodegradation of Bis(2-ethylhexyl) carbonate in air via OH radicals was calculated using EPIWIN v3.20, AOPWIN v1.92.



According to REACH Regulation (Annex VIII,, column II), the study on hydrolysis needs not to be performed as the water solubility of the test substance is <1 mg/L at 20°C and the test substance is proved to be readily biodegradable.