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ectru'li 1,ab0ratones Chemical Fact Sheet-Cas 4 €634044 http//www speclab com/compound/cl 634044 <br /> 1 groundwater,based upon an estimated Koc of I 1 2(3,4,SRC) It will not be expected. <br /> 1 <br /> ' to hydrolyze in soil Butyl methyl ether may be resistent to biodegradation in soil <br /> based upon screening test data from a study us mg activated sludge inocula(6,SRC) <br /> Many ethers are Ivmown to be iesrstant to biodegradation(7) AQUATIC FATE If <br /> ' !t-butyl methyl ether is released to water,it will not be expected to significantly <br /> } !adsorb to sediment or suspended particulate matter(1,2,SRC),bioconcentrate in 1 <br /> !aquatic orgamsms(1,2,SRC),hydrolyze,directly photolyze,or photooxidize via <br /> 1reactton with photochemically produced hydroxyl radicals in the water,based upon <br /> 'estimated physical-chemical properties or analogies to other structurally related #� <br /> 'aliphatic ethers(I-3,SRC) t-Butyl methyl ether in surface water will be subject to <br /> E>av>Eranrnental Fate !rapid volatilizatioa(2,5,SRC) Using a reported Henry's Law constant of 5 57X10-4 <br /> ' atm-cu m/mole ,a half-life for volatilization of t-butyl methyl ether from a giver oiie <br /> meter deep flowing I rn/sec with a wind velocity of 3 m/sec has been estimated to <br /> be 4 1 hi at 25 deg C(2,SRC) The volatilization half-life from a inodel pond,which <br /> k considers the effect of adsorption,has been estimated to be 2 0 days(6) t-Butyl <br />' ]methyl ether may be resistent to biodegr adation in environmental media based upon <br /> screening test data froin a study using activated sludge rnocula(7,SRC) Many ethers 1 <br /> �aie known to be resistant to brodegradation(S) ATMOSPHERIC FATE If t-butyl <br /> Imethyl ether is released to the atmosphere,it will be expected to exist almost <br />' entirely in the vapor phase based upon a reported vapor pressure of 249 nim Hg at 5 <br /> 25 deg C It will be susceptible to photeoxidation via vapor phase reaction with F <br /> i photochemically produced hydroxyl radicals An atmospheric half-life of 5 6 days at 1 <br />' <br /> an atmospheric concentration of 5X10 5 hydioxyl radicals per cu cm has been t <br /> ##calculated for this process based upon a measured rate constant(1,SRC) Dnect <br /> E jphotolysis will not be an miportant removal process since aliphatic ethers do not <br /> tabsoib light at wavelengths X290 ran <br />' ; - - _ 1GROUNDWATER t-Butyl methyl ether has�een detected at coiicii-up to 50 ppbiii i <br /> ;the Old Bridge aquifer under an industnal plant in South Bni mswtck Township,N7 i <br /> Di inking Water Impact kno sampling dates specified) A contamination abatement systein installed at this <br /> !aquifer,including 7 extraction wells and a water treatment facility, reduced the 1 <br /> it-butyl methyl ether conch by an estimated 26% <br /> t DISCLAIMER - Please Read <br /> Return to <br /> Alphabetical List of Compounds <br /> 1 � <br /> List of Compounds by.CAS Numbei <br /> List of Sei vices <br /> F � f <br />' Spectrum Laboratories Homepage <br /> 2 of 2 n4r71VIAWA d nQ <br />