Document a4ZwBwdnmDEYyNop5V2XpM9rM

CAS Number 2991-51-7 3M Company Voluntary Use and Exposure Information Profile Perfluorooctane sulfonamido ethyl acetate I. CHENHCAL IDENTIFICATION Chemical Name: CAS Number: Perfluorooetanseulfonamidoethylacetate(PFOSSA) 2991-51-7 II. COMIPANY IDENTIFICATION Company Name: 3M SiteLocation: 1400 StateDocks Road Decatur,AL 35601 TechnicalContact: W.A. Weppner Phone: 651/733-6374 Address: 3M Center,Building236-IB-10 St.Paul,MN 5 5144 111. ON-SITE ACTI"TIES CAS # Mfz. (1997) 2991-51-5* < 100,000lbs. Estimatetheamount ofsubjectchemicaldistributeodff-site: Imported 0 93.5% ofmanufacture/import *Submittedin 1998 TSCA ILJR. Ifyou have alreadyprovidedtheabove informationtoEPA and itisstilrlepresentativpelease referencethatsubmission here: CAS Number 2991-51-7 3M Company 2 Narrative Description and Process Flow Schematic: 3M Company utilizeas processknown as Simons Electro-ChernicaFlluorination(ECF) to synthesize organofluorinmeolecules.In thisprocess,organicfeedstocksaredispersedin liquida,nhydrous hydrogen fluoridea,nd an electriccurrentispassedthroughthesolutionc,ausingthehydrogen atoms on themoleculeto be replacedwithfluorineT.he predominantcomponents of theproductscreated by thisprocesshave thesame carbon skeletaalrrangementasthefeedstockused,but with allofthe hydrogen atoms replacedby fluorineH.owever, fragmentatioannd rearrangementof thecarbon skeletoncan alsooccurand significanatmounts of cleaved,branchedand cyclicstructuremsay be formed. The degreeof fluorinatioonftheorganicfeedstockisalsodependentupon thespecific carbon chainlengthofthefeedstockand parametersoftheECF processsuch as electricaclurrentand thelengthoftime theprocessisrun. Itispossibletosynthesizfeullyfluorinateodr perfluoroorganic moleculeswhere allof thehydrogen atoms ofthehydrocarbonfeedstockhave been replacedby fluorineatoms. Using theseperfluoroorganimcoleculesasbasicbuildingblocks,uniquechemistries can be createdby furtherreactionswith fimctionalizedhydrocarbon molecules. 3M has produced sulfonylbased fluorochemicalscommercially forover 40 years using the ECF process. A basicbuildingblock of such productsand the highestproductionvolume fluorochemical 3M manufactures isperfluorooctanesulfonyflluoride(POSF). The startinfgeedstockforthisreaction is 1-octanesulfonylfluoride. (Reaction1) Reaction 1 C8Hl7so2F + 17 HF 1-Octanesulfonylfluoride Energy -------->- C8Fl7SO2F + 17 H2 ECF Perfluorooctanesulfonyflluoride The electrochemicalfluorinatiopnrocessyieldsabout 35%-40% straightchain (normal) POSF, and a mixture of biproductsand waste of unknown and variablecomposition comprised of the following: 1) higherand lowerstraight-chahionmologs,i.e.n,-CnF2n+IS02Fe,.g.C,6Fl3SO2F, C7Fl5SO2F, C9Fl9SO2F which compriseabout7% oftheprocessoutput 2) branched-chain,perfluoroalkylsulfonyflluorideswith variouschain lengths,about 18-20% of the output 3) straight-chainb,ranched, and cyclic(non-ftmctionalp)erfluoroalkanesand ethers,which comprise about 20-25% of the output 4) "tars"(highmolecular weight fluorochemicalbyproducts)and otherbyproducts,includingmolecular hydrogen, which comprise about 10-15% of the output. Because of slightdifferencesin process conditions,raw materials,and equipment, the mixture produced by the electrochemicalfluorinatiopnrocess variessomewhat from lot-to-loatnd from plantto-plant.The product thatresultsfrom electrochemicalfluorinatioinsthus not a pure chemical but rathera mix of isomers and homologues. The commercialized POSF derived products are a mixture of approximately 70% linearPOSF derivativesand 30% branched POSF derived impurities. CAS Number 2991-51-7 3M Company 3 During production,byproductsand waste productsareformed. The volatilweaste products,such as perfluoromethaneh,ave been ventedtotheatmosphereinthepast,butplansarebeingimplemented to captureand destroythese releasesby thermal oxidationover thenext few years. The tarshave been landfilleidn a hazardous waste landfililn thepast,but are allcurrentlybeing incineratedat an in-house or externalhazardous waste incinerator.The byproducts,many of which are incompletely fluorinatedwith hydrogen atoms stilplresent,can be recycledback intotheECF process or are partiallydegraded in stabilizatiopnrocessesand dischargedto controlled,in-house,wastewater treatmentsystems. The treatmentsludge associatedwith the ECF process has been eitherlandfilled or land-incorporatedin thepast,but allof thistreatmentsludgeisbeing landfilledoff-sitseinceearly 1998. POSF isitselaf commercially viableproduct,but isprimarilyan importantintermediatein the synthesisof substancesused in many other 3M fluorochemicalproducts. The majority isused to produce :ftmctionalldyerivatizedfluorochemicalsand high molecular weight polymeric products. Unique chemistriescan be createdby derivatizinPgOSF through the sulfonylfluoridemoiety of the molecule using conventionalhydrocarbon reactions.POSF isreactedwith methyl or ethylatnineto produce eitherN-methyl or N-ethylperfluorooctanesulfonamide(MEFOSA or ETFOSA). Some of the MEFOSA and ETFOSA isisolatedto be used as intermediatesto be reactedto form othermaterials. The majority of theMEFOSA and ETFOSA isnot isolatedand subsequentlyreactedwith ethylene carbonateto form eitherN-methyl or N-ethylperfluorooctanesulfonaniidoethanol.These arethe principalbuildingblocks of the 3M product lines. CAS Number 2991-51-7 3M Company 4 The followingblock flow diagram describesthe process discussedabove. BLOCK FLOW DIAGRAM Electro-ChemicaFlluorinatioCnells (Octanesulfonyflluoride+ BF + electricaelnergy) IF Perfluorooctanseulfonylfluoride (POSF) I SecondaRreyactors7 Perfluorooctanesulfonicacid (PFOS) I v Surfactants v ous commercialized intermediates and su -factants Amp ioteric surfactants (FireFighting Foams) N-ethyl(andmethyl) perfluorooctanesulfonamide N-et Ldmethyl) perfluorooctane- sulfonamido ethanol v AdditionalSecondary Reactors Phosphate Estersand Acrylate/polymers (Paper& Packaging) Acrylatepolymers Adipate adducts Urethane polymers (Carpetand Textile Protection) Various conunercialized intermediates and surfactants CAS Number 2991-51-7 3M Company 5 IV. SITE RELEASE AND TRANSFER INFORMATION FOR TRI CHEMICALS Not applicable. V. SITE RELEASE AND TRANSFER INFORMATION FOR NON-TRI CHEMICALS While analyticamlethods haveimprovedovertime,largevariabilisttyilelxistsforcertaimnatrices and compounds, so dataavailablfeorthisreportismostlyof a qualitativneature.Although limited monitoringdataexistsm,ost emissionand waste estimatesarebased upon processmodels and engineeringcalculationsE.ngineeringcalculationhso,wever,have limitationwsith respecto fluorochemicalbsecausefluorochemicalosseswere not always includedintheanalysisof each intermediatestep. The accuracyof theemissionsdatasubmittedvariesdue toseveralfactors.Batch processsystems aredifficulttomeasure due to quicklychangingprocessconditionsv,entingpressuresand difficulty inisolatinpgrocessesto takemeasurements.Additionallyt,heuniquecharacteristiocfsthese compounds causethem to behave differentlfyrom conventionalcompounds, and physicalchemical datapropertieasrenot availablfeorallintermediatreeactionstepsinthepast. A. ON-SITE AIR RELEASES ALL PLANTS - Fugitiveemissionmsay occurfromvacuumcharginfgromdrums,sampling from reactorsd,rumming of product/intermediatfel,akingmonomer, dryingoperations. Materialsmay be handledina molten or solidstatev;aporsareproducedfrom molten material.Industriahlygienemonitoringhas been conductedforsome compounds. Some minor amounts of thesecompounds have been detectedas fugitivemissionsduringindustrial hygiene exposure testing. DECATUR, ALABAMA ONLY: Decatur, AL Emission estimatesare based upon existingprocess models and engineeringcalculationsfrom the facilityF.ugitiveemissions may have occurred during some handling stepsbut have not been quantified. Estimated Total Annual Releases (lbs.) Estimated % days/years Accuracy of releaseoccurs Estimate(optional) Fugitiv-e (non-point) No dataavailable. Stack(point) EstimatedTotal Annual Releases (lbs.) (1997) Estimated% days/years Accuracy of releaseoccurs Estimate (optional) 0 CAS Number 2991-51-7 3M Company 6 B. WATER RELEASES FROM SITE Decatur,AL The datapresentedispartof wastewater testing conducted in 1998, since the individual compounds of interestwere not analyzed in the 1997 wastewater materialbalance due to method availabilitaynd initiaplrogram focus. The 1998 data has not been adjustedfor production levelsin 1997, sincemost productionremained at similarlevels. Itisnot possibleto distinguishthe amount of chemicals generatedfrom specificreactionsteps in production of variouscompounds, or whether theirpresence may be the resultof hydrolysis of more complex molecules. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optionai) Water releases: 420 Number of days/year releaseoccurs: Most compounds aremanufactured on a regularbasis, so releasesare estimated at 250 days per year. Receiving Water Name: Baker's Creek atthejunction with the Tennessee River NPDES Number: ALD004023164 Comments: CAS Number 2991-51-7 3M Company 7 C. ON-SITE LAND RELEASES Decatur, AL The landtreatmentof Decatursludgewas discontinueidnearly1998. Sludge isnow transportetdo an offsitleandfilla,fterpassingthrougha thickenerand a sludgepress.An impoundment was usedin 1997 as partof thewastewatertreatmentoperationbut isnow only used forback-upoperation.Levelsofthecompound inthesludgewere determinedfrom wastewater data. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optional) LandfiJI Land Treatment/Land Amendment Surface Impoundments Underground Injection Other (specify): 0 8,100 No longerused No data available/Nolongerused 0 Comments: D. OFF-SITE TRANSFERS Decatur,AL Process wastewaters are managed in an on-sitewastewater treatmentfacilityand are not sent to the POTW. Dl. TransfertoPubliclyOwned Treatment Works (POTW) Number ofdays/yearthereleaseoccurs: Annual Transfer(lb):0 Estimated% Accuracy ofTransferEstimate(optional) POTW Name: StreetAddress: City: State: NPDES Number: Country: Zip Code: Comments: CAS Number 2991-51-7 3M Company 9 D2. TRANSFERS TO OTHER OFF-SITE LOCATIONS GeneralWaste InformationT:hereislimiteidnformatiobnyCAS numberforcompound specifirceportingand off-sitteransfercsannotbe readilyverifiedR.atherwastesareclassified by halogencontent,regulatorwyaste codes,physicalpropertieasnd non-specific fluorochemicalcategoriesW.here wastesaretrackedby CAS number, theamounts have been included. Decatur,AL A reviewof plantrecordsregardingwastedisposalocationfsorDecaturfluoride-containing wastesindicatetshat70% isdisposedthroughincineratioantvariousoff-sitleocationasnd approximately30% islandfilleadta hazardouswastelandfillI.ncineratioinsnow the predominant disposalmethod forthesematerials. Estimated Total Annual Releases (lbs.) Estimated % Accuracy of Estimate (optional) Incineration: No specific CAS number data available. Wastewater Treatment 0 (Excluding POTW) Underground Injection 0 Hazardous Waste (RCRA Subtitle C) landfill No specific CAS number data available. Other Landfdl No specific CAS number data available. Recycle or Recovery 0 Unknown or Other -- Comments: CAS Number 2991-51-7 VI. ON-SITE WORKPLACE 3M Company EXPOSURE 3M Company, SpecialtMyaterialMsanufacturingDivisionD,ecatur,AL This informationwillassisEtPA incharacterizintghenumber ofworkers potentialleyxposed and themagnitude,frequency,and durationofpotentiaelxposure.When providing monitoringdata,ensurethatdataislinkedwithworker activitideesscribedinquestion2. 1. Estimatethenumber ofworkers potentialleyxposed routinelytothesubjectchemicalfor each oftheexposuredurationtimes.Ifa worker isinvolvedinmore than one activitye,nter onlyhis/hermost typicalactivitiynthetable.Don't counta worker more than once. The totalnumber inthetableshouldequalthetotalnumber ofworkers potentialleyxposed. Hours/Day <10 <0.25 0.25-1 11 1-8 16 >8 Days/Year 10-100 100-250 >250 24 2. Describe the routine worker activitiesto which the workers in question 1 are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activitiesd,escribe the physical stateof the subject chemical (liquid,gas, particulate, or aerosol, etc.)and, ifin a mixture, the chemical's concentration: The chemical (2991-51-7) issampled and drained into drtunsin a molten stateat 80-90% concentration.The materialisvacuum-charged in a molten statefrom drums and formulatedinto a liquidat42% concentration.The processmixtureissampled and thefinalsolutionisdrummed atroom temperature.Additionalexposuremay alsooccur duringequipment maintenance. 3. Provide industrialhygiene monitoring data, ifavailable,with a briefdescriptionof the sampling method and exposure scenariomonitored, e.g.,describethe specificworker activitiepserformed by the individualsmonitored. For privacy considerations,please do not include any personal identifierssuch as a worker's name or socialsecuritynumber with any data submitted toEPA. There isno chemical-specifipcersonalindustriahlygiene monitoringdataor area/source monitoringdataforthisspecifimcaterialatthisfacilityF.or most areasofthefacilitrye,cent qualitativaessessmentofpotentialexposureto thismaterialunder 3M's ongoing industrial hygiene program indicatesa low exposurepotentialtothismaterial. CAS Number 2991-51-7 3M Company 10 Each 3M plantthatproducessulfonatedfluorochemicalhsas an industriahlygieniston staffand is supportedby a corporateindustriahlygienegroup. 3M's industriahlygieneprogram focuseson task-basedexposureassessmentand control.Exposures areidentifieadnd assessedqualitatively and/orquantitativelyQ.ualitativaessessmentsareperformedby an industriahlygienist. Quantitativaessessmentsincludetask-basedpersonalsamplingforcertains,pecific fluorochemicalsand/orsourceor areasampling.The resultosftheassessmentssupportdecisions on exposurecontrol.Engineeringcontrolsarepreferredb,utpersonalprotectivequipment may be used on an interimbasisorwhen effectiveengineeringcontrolisnotfeasible. 4. Brieflydescribethe engineeringcontrolsused to minimize exposure to thischemical: Localexhaustisused duringdrumming and chargingof moltenmateriala,nd duringdrununingof theformulatedsolution. 5. Brieflylistthe personalprotectiveequipment your workers regularlywear to prevent exposure of thischemical: Specificpersonalprotectiveequipmentisindicateodn writtenoperatingproceduresused by processoperators. Respiratory protection:Tasks with significanetxposurepotential(charging,drumming, some maintenancetasks)areperformedusingfullfaceair-piiifyirnegspiratorwsithorganicvapor cartridgeasnd P 100 prefilters. Hand protection:Alltasksidentifieads havingpotentiaflorhand contactrequireneoprene (Scorpio)or nitriliendustrigaloves. Body protection:Exposuresignificatnatsksuseone ortwo-piecePVC suits.Aprons may be wom forsome low exposurepotentiatlaskssuchas sampling. Foot protection:Tasks identifieadsposinga significanftootexposurepotentiarlequire chemicalresistanbtoots. Comments: (Thissectionisavailablteoclariftyheresponsesgiven.Attachadditionaplagesif desired.) VII. CHEMICAL END USES A. END USE AS AN INTERMEDIATE CONSUMED Al. On-SiteUse as a Intermediate: Product chemicalclass or product chemical (IncludeCAS number ifappropriate) 1. Not Applicable A2. Off-SiteUse as an Intermediate Product chemicalclass or product chemical (IncludeCAS number ifappropriate) 1. Exported TO MAKE OTHER CHEMICALS % of total volume ofsubject chemicalmanufactured or imported As reportedinPart III,p.2 % oftotal volume ofsubject chemicalmanufactured or imported 3% As reportedinPart M, p.2 CAS Number 2991-51-7 3M Company 12 Use Number I of 3 DescriptionofChemical End Use: Chemicalformulatorussethischemicalasa surfactant to improve thewettingof water-basedproductsthataresoldas cleaners. Percentof totalmanufacturedor imported volume goingtothisuse: 66 I Check allphysicalforms ofthe chemicalduringthisuse: Ifused ina mixturecheck appropriatbeox to indicateweight fraction.Average values are acceptable: X <1% (50-100ppm) 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor X Liquidsolution Other (Explain) Use Number 2 of 3 Description of Chemical End Use: Chemical formulatorsuse thischemical as a surfactant to improve thewetting of water-based productsthatare soldas floorpolishes. Percent of totalmanufactured or imported volume going to thisuse: 29 1 Check allphysicalforms of the chemical duringthisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.Average values are acceptable: X <1% (50-100ppm) 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor X Liquid solution Other (Explain) CAS Number 2991-51-7 3M Company 13 Use Number 3 of 3 Descriptionof Chemical End Use: Formulatorsuse thischemicalas a surfactanitna personalcareconsumer denturecleaner. Percentof totalmanufacturedor imported volume goingtothisuse: 3 0.25 Check allphysicalforms of the chemicalduringthisuse: Ifused in a mixturecheck appropriatbeox to indicatweeightfractionA.verage valuesare acceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water orsolvent- wet solid Gas or vapor X Liquid solution Other (Explain)