Volatilization | Isocyanates undergo rapid hydrolysis under environmental conditions with half-lives of less than 10 minutes(1). Therefore, hydrolysis is expected to be the dominant fate process for ethyl isocyanate in moist soil and water(SRC). Volatilization from moist soil and water surfaces is not expected to compete with hydrolysis as an important removal process(SRC). Ethyl isocyanate may volatilize from dry soil surfaces(SRC) based upon an estimated vapor pressure of 200 mm Hg at 25 °C(SRC), determined using a structure estimation method(2). |