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�pectrum Laboratories Chemical Fact Sheet-Cas# 1634044 http//www speclab com/compound/c 16340 44- <br /> 1 <br /> 1 <br /> Chemical Fact Sheet <br /> Che 1 --- - - -- __ _ _w.......__ ___ _w__ <br /> Chemical Abstract Number ;1634044 <br /> t <br /> {CAS #� <br /> rMetsyl teff-butyr ether - <br /> Synonyms - ---- _—_ - - -- - --- -- ---- — <br /> Analy�cal Method !EPA Melt od 524 2 W--- _ _ _ <br /> RE._e booster in gasoluie Manoff'ufacture iSp�iutene UnleaGed gasoline <br /> � usually <br /> Use `contains additives for octane improvement including nnethyl tert-butyl ether <br /> solme octane component, 100% CHEMICAL PROFILE Methyl ted-butyl ether ' <br /> ' Consumption Patterns ;Demand 1988 65,500 banels per day, 1989 72,500 barrels per day, 1993 <br /> (projected/ 90,000 barrels per day(average daily consumption, foreign trade is j <br /> ,negligible) <br /> X Pai ent Color - FCo1arlessWhqurd <br /> B0 ling Point- _;55­2 DEG C <br /> Melting Point <br /> M61lecxilai Wetght 88 1-S _-- <br /> Density0 7405a 20 DEG C14-DEG C- <br /> __ ,t-Butyl methyl ether may be released as a result of its use as an octane booster for i <br /> Junleaded gasoline and its use in the manufacture of isobutene If t-butyl methyl ether E <br /> is released to soil,it will be subject to volatilization It will be expected to exhibit <br /> !very high mobility in soil and, therefoxe,it may leach to gioundwatez It will not be <br /> ' ;expected to hydrolyze in soil If t-butyl.metbyl ether is released to water, it will not <br /> Abe expected to significantly adsorb to sediment of suspended pai bculate matter, <br /> tbioconcentrate in aquatic organisms,hydrolyze, driectly photolyze, or photooxidize <br /> ' !via reaction with photochernrcally produced hydroxyl radicals in the water,based <br /> upon estimated physical-chemical properties or analogies to other structurally <br /> }related aliphatic ethers t-Butyl methyl ether in surface water w1.11 be subject to rapid <br /> �volattlrzation with estimated half-lives of 4 1 hr and 2 0 days for volatilization from <br /> ' Envix onmental Impact a river one metes deep flowing 1 rn/sec with a wind velocity of 3 msec and a model <br /> ,pond,respectively It may be resistent to biodegradation in enviiomnental media <br /> !based upoin seieerung test data from a study using activated sludge inocula Many r <br /> etheis are known to be resistant to biodegradation If t-butyl methyl ether is released <br /> ;to the atmosphere,it will be expected to exist almost entirely in the vapor phase <br /> =based on its vapor pressure It will be susceptible to photoxidation via vapor phase <br /> ;reaction with photochemically produced hydroxyl radicals with an estimated <br /> ' !half-life of 5 6 days for this process Direct photolysis will not be an important <br /> removal process since aliphatic ethers do not adsorb light at wavelenghts X290 run 1 <br /> The most probable route of general population exposure to t-butyl methyl ether is s <br /> �pxobably via inhalation of contaminated an Exposures through dermal contact may <br /> occur in occupational settings <br /> - - r « ----w` `_ '_ - - ' � �TEIZRESTRIAI.,FATE-If t-butyl metfiy�ether is Felease�io soil,rt will�e subject ' <br /> !to volatilization based upon a reported Henrys Law constant of 5 87X10-4 atm-cu ' <br /> lnilmole and vapor pressure of 249 inm Hg at 25 deg C It will be expected to <br /> texhibit very high mobihty(5,SRC)to soil and,therefore,it may leach to <br /> 1 nf'7 ntinn+�nna A f1v <br />