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�ectrum Laboratories Chemical Fact Sheet-Cas# 1634044 http//www speclab com/oompound/c1634044 <br /> ,groundwater,based upon an estimated Koe of 112(3,4,SRC) It will not be expected <br /> f 'to hydrolyze in soil Butyl methyl ether may be resistent to biodegradation in soil <br /> 'based upon screening test data from a study using activated sludge inocula(6,SRC) <br /> Many ethers ethers are known to be resistant to biodegradation(7) AQUATIC FATE If 1 <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 <br /> o uatic or anisms(1>2,SRC) hYdrol ze,directly Photol ze�or photooxidize via <br /> }reaction with photochermcally 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 /> Environmental Faterapid volatilization(2,5,SRC) Using a reported Henry's Law constant of 5 87X10-4 <br /> ' jatril-cu m/mole,a half-life for volatilization of t-butyl methyl ether from a river one <br /> meter deep flowmg 1 msec with a wind velocity of 3 m/sec has been estimated to <br /> ,be 4 1 hr at 25 deg C(2,SRC) The volatilization half-life from a model pond,which <br /> iconsiders the effect of adsorption, has been estimated to be 2 0 days(6) t-Butyl <br /> 'methyl ether may be resistent to biodegiadation in environmental media based upon <br /> ;screening test data from a study using activated sludge inocula(7,5RC) Many ethers <br /> ,are known to be resistant to biodegradation(8) ATMOSPHERIC FATE If t-butyl 1 <br /> ' !methyl 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 mm Hg at j <br /> `25 deg C It will be susceptible to photooxidation via vapor phase reaction with <br /> ,photochemically produced hydroxyl radicals An atmospheric half Itfe of 5 6 days at <br /> ,an atmospheric concentration of 5X10 5 hydroxyl radicals per cu cm has been <br /> 1calculated for this process based upon a measured rate constant(1,SRC) Direct <br /> photolysis will not be an important removal process since aliphatic ethers do not <br /> absorb light at wavelengths>290 nm — <br /> IGROUNDWATER t-Butyl mefhyl ether lies been detected at concn up to 5 <br /> 0 ppb in , <br /> the Old Bridge aquifer under an industrial plant in South Bruns <br /> wtck Township,NI <br /> Drinking Water Impact ;(no sampling dates specified) A contamination abatement system installed at this <br /> M laquifer,including 7 extraction wells and a water treatment facility, reduced the <br /> t-butyl methyl ether concn by an estimated 26% r <br /> DISCLAIMER- Please Read <br /> Return to <br /> ' Alphabetical List of Compounds <br /> List of Compounds by CAS Number <br /> ---List of Services_—_-- --_-- _ <br />' Spectrum Laboratories Home a e <br /> r <br /> 2 oft <br /> 06/10/2003 4 0$ <br />