Tropospheric half-life phosgene

PROBABLE FATE photolysis could be important in aqueous environment, in the stratosphere, photodissociation occurs to eventually form phosgene as the principal product oxidation no information available, in troposphere it exhibits an extremely slow rate of reaction with hydroxyl radicals, photooxidation half-life in air 1.8-18.3 yrs hydrolysis first-order hydrolytic half-life 7000 yrs based on a rate constant of 4.8xl0 mol s pH 7 and 25°C vola-... 

PROBABLE FATE photolysis-, photochemical reactions in aqueous media are probably unimportant, slow decomposition in the troposphere in the presence of nitrogen oxides is possible, appreciable photodissociation may occur in stratosphere, photooxidation half-life in air 19.1-191 days oxidation-, probably unimportant, in troposphere, oxidation by hydroxyl radicals to CO2, CO, and phosgene is important fate mechanism hydrolysis not an important fate process, first-order hydrolytic half-life 704 yrs volatilization due to high vapor pressure, volatilization to the atmosphere is rapid and is a major transport process sorption sorption to inorganic and organic materials is not expected to be an important fate mechanism biological processes bioaccumulation is not expected, biodegradation may be possible but very slow compared with evaporation... 

PROBABLE FATE photolysis not important except as photooxidation, C-Cl bond can photolyze slowly oxidation tropospheric photooxidation by hydroxyl radicals yields trichloro-acetyl chloride and phosgene, predominant fate, photooxidation half-life in air 16-160 days hydrolysis probably too slow to be important volatilization rapid volatilization is the primary transport process sorption too slow to compete with volatilization biological processes moderate potential for bioaccumulation, possible biodegradation by higher organisms... 

PROBABLE FATE photolysis, tropospheric photooxidation of volatilized trichloroethylene by hydroxyl radicals to phosgene and dichloroacetyl chloride is very rapid, C-Cl bond can photolyze slowly oxidation not important except for photooxidation, photooxidation half-life in air 1.1-11.3 days hydrolysis not important under environmental conditions, first-order hydrolytic half-life 10.7 months volatilization rapid volatilization is the major transport process, evaporation from water 25°C of 1 ppm solution 50% after 19-24 min, 90% after 63-80 min ... 

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