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Environmental fate & pathways

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Hydrolyses fast (DT50 = 20.0 min at 25 °C and pH 7) to ethanol, HCl and CO2 (OECD TG 111; SafePharm, 2003). Ethanol is hydrolytically stable (OECD, 2005).

In air, ethyl chloroformate is expected to be photodegraded by OH-radicals with a half-life of 9.66 d (US EPA, 2008). This estimation refers to dry air. In mist, rain, droplets and aerosols hydrolysis will be the major fate process in air due to the short half-life in aqueous solutions.

Hydrolysis product ethanol: Based on the selected value of 3.27E-12 cm³/(molecule*sec) for the measured OH radical rate constant at 25 °C (OECD, 2005) and assuming a 24-h day with a mean concentration of 0.5E06 OH/cm³, a half-life of 4.9 ± 1 d can be calculated.

No data are available for phototransformation in water or in soil.