ABSTRACT
Diisobutyl ketone is released directly to the atmosphere by evaporation through its use as a solvent. If released to the atmosphere, diisobutyl ketone is degraded relatively rapidly by reaction with photochemically produced hydroxyl radicals. The results of several biodegradation screening studies suggest that biodegradation will be an important fate process in water and soil. If released to water, volatilization may be important. Volatilization half-lives of 4.9 and 57 hr have been estimated for a model river (one meter deep) and a model environmental pond, respectively. If released to soil, diisobutyl ketone may leach significantly based upon an estimated Koc value of 55. Diisobutyl can be expected to evaporate from dry surfaces. In occupational settings, exposure to diisobutyl ketone may occur through inhalation of vapors and through eye and skin contact.
