Document Z49w8ydDdRYnyma9Zae3xq9L7

CAS Number 24448-09-7 3M Company Voluntary Use and Exposure Information Profile N-methyl perfluorooctanesulfonamido ethanol 1. CHEMICAL IDENTIFICATION Chemical Name: CAS Number: N-methylperfluorooctanesulfonamiedomol (MEFOSE) 24448-09-7 Il. COMIPANY IDENTIFICATION Company Name: 3M SiteLocation: 22614 Route 84 North Cordova,IL 61242 10746 InnovationRoad CottageGrove,NW 55016 1400 StateDocks Road Decatur,AL 35601 TechnicalContact: W.A. Weppner Phone: 651n33-6374 Address: 3M Center,Building236-1B- 10 St.Paul,MN 55144 III. ON-SITE ACTMTIES CAS # MfL-.(1997) Imported 24448-09-7* > 1MM & < IOMM lb. 0 Estimatetheamount ofsubjectchemicaldistributeodff-site:< 2% *Submittedin1998 TSCA IUR. CAS Number 24448-09-7 3M Company 2 Na"ative Description and Process Flow Schematic: 3M Company utilizesa processknown as Simons Electro-Chemical Fluorination(ECF) to synthesize organofluorinmeolecules.In thisprocess,organicfeedstocksaredispersedinliquida,nhydrous hydrogen fluoridea,nd an electriccurrentispassedthroughthesolutionc,ausingthehydrogen atoms on themoleculeto be replacedwithfluorineT.he predominantcomponents oftheproductscreated by thisprocesshave thesame carbon skeletaalrrangementasthefeedstockused,butwith allofthe hydrogen atoms replacedby fluorineH.owever, fragmentationand rearrangementofthecarbon skeletoncan alsooccur and significanatmounts of cleaved,branchedand cyclicstructuremsay be formed. The degreeof fluorinatioonftheorganicfeedstockisalsodependentupon thespecific carbonchainlengthofthefeedstockand parametersoftheECF processsuch as electricaclurrentand thelengthof timetheprocessisrun. Itispossibleto synthesizfeullyfluorinateodr perfluoroorganic moleculeswhere allof thehydrogen atoms ofthehydrocarbonfeedstockhave been replacedby fluorinaetoms. Using theseperfluoroorganimcoleculesasbasicbuildingblocks,unique chemistries can be createdby furthereactionwsithfunctionalizehdydrocarbonmolecules. 3M has produced sulfonylbased fluorochemicalcsommerciallyforover40 yearsusingtheECF process.A basicbuildingblockof suchproductsand thehighestproductionvolume fluorochemical 3M manufacturesisperfluorooctanesulfofnlyulorid(ePOSF). The startinfgeedstockforthisreaction isI-octanesulfonyfl uoride. (Reaction1) Reaction I C8Hl7SO2F + 17I-IF I-Octanesulfonylfluoride Energy ------->-- C8Fl7SO2F + 17H2 ECF Perfluorooctanesulfonyflluoride The electrochemicalfluorinatiopnrocess yieldsabout 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+IS02F,e.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-functionalp)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, themixture produced by the electrochemicalfluorinatiopnrocessvariessomewhat from lot-to-loatnd from plantto-plant.The product thatresultsfrom electrochemicalfluorinationisthus not a pure chemical but rathera mix of isomers and homologues. The commercialized POSF derivedproducts area mixture of approximately 70% linearPOSF derivativesand 30% branched POSF derived impurities. CAS Number 24448-09-7 3M Company 3 During production,byproductsand waste productsareformed. The volatilweaste products,suchas perfluoromethaneh,ave been ventedtotheatmosphereinthepast,but plansarebeing implemented to captureand destroythesereleasebsy thermaloxidationoverthenextfew years.The tarshave been landfilleidna hazardouswaste landfllilnthepast,but areallcurrentlbyeingincinerateadtan in-houseor externalhazardouswaste incineratorT.he byproducts,many of which areincompletely fluorinatewdithhydrogen atoms stilplresentc,an be recycledback intotheECF processor are partialldyegradedinstabilizatipornocessesand dischargedto controlledi,n-house,wastewater treatmentsystems.The treatmentsludgeassociatedwiththeECF processhas been eitherlandfilled or land-incorporatiendthepast,butallofthistreatmentsludgeisbeinglandfilleodff-sitseinceearly 1998. POSF isitselafcommerciallyviableproduct,butisprimarilyan importantintermediatienthe synthesiosf substancesused inmany other3M fluorochemicaplroducts.The majorityisusedto produceftmctionalldyerivatizefdluorochemicalasnd highmolecularweightpolymericproducts. Unique chemistriecsan be createdby derivatizinPgOSF throughthesulfonylfluoridemoietyof the moleculeusingconventionalhydrocarbonreactionsP.OSF isreactedwithmethylor ethylamine to produceeitherN-methyl or N-ethylperfluorooctanesulfonar(nMiEdFeOSA or ETFOSA). Some of the MEFOSA and ETFOSA isisolatedtobe used as intermediatetsobe reactedto form othermaterials. The majorityoftheMEFOSA and ETFOSA isnotisolateadnd subsequentlyreactedwithethylene carbonateto form eitheNr-methyl orN-ethylperfluorooctasnuelfonamidoethanol.These arethe principabluildingblocksof the3M productlines. CAS Number 24448-09-7 3M Company 4 The followingblock flow diagram describesthe process discussedabove. BLOCK FLOW DL4LGRAM Electro-ChemicaFlluorinatioCnells (Octanesulfonylfluoride+ EF + electricaelnergy) IF Perfluorooctasnuelfonyflluoride (POSF) IF Secondary Reactors Perfluorooctanesulfonicacid (PSOF) I v Surfactants IF Various commercialized intermediates and s factants Amp loteric surfactants (FireFighting Foams) N-ethyl(andmethyl) perfluorooctanesulfonamide N-1 Ldmethyl) perfluorooctane- sulfonamido ethanol AdditionalSecondary Reactors Phosphate Estersand Acrylate/polymers (Paper& Packaging) Acrylatepolymers Adipate adducts Urethane polymers (Carpetand Textile Protection) Various commercialized intermediates and surfactants CAS Number 24448-09-7 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 analyticamlethodshave improvedovertime,largevariabilisttyilelxistsforcertainmatrices and compounds, so dataavailablfeorthisreportismostlyof a qualitativneature.Although limited monitoringdataexistsm,ost emissionand waste estimatesarebased upon processmodels and engineeringcalculations.Engineering calculationsh,owever, have limitationswith respectto fluorochemicalsbecause fluorochemicallosseswere not always included in the analysisof each intermediatestep. The accuracy of the emissions data submitted variesdue to severalfactors.Batch process systems are difficultto measure due to quicklychanging process conditions,venting pressuresand difficulty in isolatingprocessesto take measurements. Additionally,theunique characteristicosf these compounds cause them to behave differentlfyrom conventionalcompounds, and physicalchemical datapropertiesare not availablefor allintermediatereactionstepsin the past. A. ON-SITE AIR RELEASES ALL PLANTS - Fugitiveemissions may occur from vacuum charging from drums, sampling from reactors,drumming of product/intermediate-,flakinmgonomer, drying operations. Materialsmay be handled in a molten or solidstate;vapors areproduced from molten material. Industriahlygiene monitoring has been conducted forsome compounds. Some minor amounts of these compounds have been detectedas fugitiveemissions during industriahlygiene exposure testing. Decatur,AL Wastewater fugitiveemission datawas based upon wastewater testing. Emission estimatesare based upon existingprocess models and engineeringcalculationsfrom the facilityF.ugitiveemissionsmay have occurred during some handling stepsbut have not been quantified. Estimated Total Annual Releases (lbs.) (1997) Estimated % days/years Accuracy of releaseoccurs Estimate (optionsi) Fugitive- wastewater <1 Stack (point) Estimated Total Annual Releases (lbs.) (1997) <1 Estimated % Accuracy of Estimate (optionai) days/years release occurs 250 CAS Number 24448-09-7 3M Company 6 CottageGrove Emission estimatesarebased upon existingprocessmodels and engineeringcalculationfsrom thefacilityF.ugitiveemissionsmay have occurredduringsome handlingstepsbuthave not been quantified. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optionao days/years releaseoccurs Fugitive(non-point) 0 Stack(point) 0 Cordova,IL POSF-based productsareno longermanufacturedinCordova. Fugitiveemissionsmay have occurredduringsome handlingstepsbuthave notbeen quantified. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optional) days/years releaseoccurs Fugitive(non-point) No dataavailable. Stack(point) No dataavailable. Comments: CAS Number 24448-09-7 3M Company 7 B. WATER RELEASES FROM SITE Decatur The datapresentedispartof wastewaterconductedin 1998,sincetheindividualcompounds o.f intereswtere notanalyzedinthe 1997 wastewatermaterialbalancedue to method availabiliatnyd initiaplrogram focus. The 1998 datahas notbeen adjustedforproduction levelsin 1997,sincemost productionremainedatsimilarlevels. Itisnotpossibleto distinguisthheamount of chemicalsgeneratedfrom specifirceactionsteps inproductionof variouscompounds, or whethertheirpresencemay be theresultof hydrolysis of more complex molecules. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optional) Water releases: 170 Number of days/year release occurs: 250 Receiving Water Name: Baker's Creek at the junction with the Tennessee River NPDES Number: ALD004023164 Comments: Cordova, IL Engineering calculationsareused to estimatethe amount of materialdischargedto wastewater. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optional) Water releases: < 10 Number of days/year releaseoccurs: 1 time in 1997. POSF-based products no longer produced in Cordova. Receiving Water Name: MississippiRiver NPDES Number: IL0003140 Comments: CAS Number 24448-09-7 3M Company 8 C. ON-SITE LAND RELEASES Decatur, AL The landtreatmentof Decatursludgewas discontinuedinearly1998. Sludge isnow transportetdo an offsitleandfilalf,terpassingthrougha thickenerand a sludgepress.An impoundment was used in 1997 as partof thewastewater treatmentoperationbut isnow only used forback-up operation.Levelsof thecompound inthe sludgewere determinedfrom wastewater data. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optional) Landfill Land TreatmentfLand Amendment Surface Impoundments Underground Injection Other (specify): 0 25,500 - No longerused No dataavailable/Nolonger used 0 0 Comments: Cordova, IL Less than 10 pounds totalof allcompounds per yearare releasedto the Cordova wastewater system. The sludgeformed intheprimary clarifieirsmost likelyto containtheinsolublesulfonated materials.This sludgeisremoved and incineratedT.he sludgeimpoundments are lined. The manufacture of MEFOSE has been discontinuedatso thesereleaseshave alsobeen discontinued. Estimated Total Annual Releases Obs.) (1997) Estimated % Accuracy of Estimate (optional) Landflll 0 Land Treatment/Land Amendment <10 Surface Impoundments 0 Underground Injection 0 Other (specify): Comments: CAS Number 24448-09-7 3M Company 9 Cottage Grove, MN Sludge from theCottage Grove facilitiyssentto an off-sitiendustrialandfill. Estimated Total Annual Releases (lbs.) (1997) Estimated % Accuracy of Estimate (optionai) Landfill 0 Land Treatrnent/LandAmendment 0 Surface Impoundments 0 Underground Injection 0 Other (specify): 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 24448-09-7 3M Company 10 Cordova,IL Processwastewatersaremanaged inan on-sitewastewatertreatmentfacilitaynd arenot sent to thePOTW. Dl. TransfertoPubliclyOwned TreatmentWorks (POTW) Number ofdays/yearthe releaseoccurs: Annual TransferOb): 0 Estimated% Accuracy ofTransferEstimate(optional) POTW Name: StreetAddress: City: State: NPDES Number: Country: Zip Code: CAS Number 24448-09-7 D2. TRANSFERS 3M Company TO OTHER OFF-SITE LOCATIONS General Waste Information:There islimitedinformationby CAS number forcompound specifirceportingand off-sitteransfercsannotbe readilyverifiedR.atherwastesare classifiebdy halogencontentr,egulatorywaste codes,physicalpropertieasnd non-specific fluorochemicalcategoriesW.here wastesaretrackedby CAS number, the amounts have been included. Decatur,AL 35,000lbs.of MEFOSE identifieidnthewaste,butnotby specifiwcastedisposallocation.A reviewof plantrecordsregardingwastedisposalocationfsorDecaturfluoride-containing wastesindicatetshat70% isdisposedthroughincineratioantvariousoff-sitleocationasnd approximately30% islandfilleadta hazardouswastelandfillI.ncineratioinsnow the primarydisposalmethod forthesewastes. Incineration: Wastewater Treatment (Excluding POTW) Underground Injection Hazardous Waste (RCRA SubtitleC) landfill Other LandfiJI Recycleor Recovery Unknown or Other Comments: Estimated Total Annual Releases (lbs.) No speci c dataavailable. 0 Estimated % Accuracy of Estimate (optional) 0 No specificCAS dataavailable. No specifiCcAS dataavailable. 0 0 Total35,000 lbs. of MEFOSE CAS Number 24448-09-7 3M Company 12 Cordova,l Cordova wastes thatcontainedMEFOSE were allincinerated.Wastes includedsome offspec product,empty bags and empty drums and containedthe compounds isresidualamounts. These productsare no longermade atCordova. Estimated Total Annual Releases (lbs.) Estimated % Accuracy of Estimate (optional) Incineration: No specificCAS dataavailable. Wastewater Treatment 0 (Excluding POTW) Underground Injection 0 Hazardous Waste (RCRA 0 SubtitleC) landffll Other Landfill 0 Recycle or Recovery 0 Unknown or Other 0 Comments: Cottage Grove, MN CottageGrove facilituytilizeisncineratiofnoralltheirdrummed wastes. Sludge from the CottageGrove facilitiyssenttoan industriallandfill. Estimated Total Annual Releases (lbs.) Estimated % Accuracy of Estimate (optional) Incineration: 60 Wastewater Treatment 0 (Excluding POTW) Underground Injection 0 Hazardous Waste (RCRA 0 SubtitleC) landfill CAS Number 24448-09-7 3M Company 13 Other Landfill 0 Recycle or Recovery 0 Unknown or Other 0 Comments: VI. ON-SITE WORKPLACE EXPOSURE 3M Co=M, Specialty Materials Manufacturiniz Division, Cordova, IL POSF-based productsareno longermanufacturedatCordova. 3M CompM. SpeciallyMaterialsManufacturing Division,Cottage Grove, MN This information willassistEPA in characterizingthe number of workers potentiallyexposed and the magnitude, frequency, and duration of potentialexposure. When providing monitoring data,ensure that data islinked with worker activitiedsescribed in question 2. 1. Estimate the number of workers potentiallyexposed routinelyto the subject chemical for each of the exposure duration times. If a worker isinvolved in more than one activity,enter only his/hermost typicalactivityin the table. Don't count a worker more than once. The totalnumber in the tableshould equal the totalnumber of workers potentiallyexposed. Hours/Day <10 <.25 12 .25-1 12 1-8 12 >8 Days/Year 10-100 100-250 >250 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 activities,describe the physical stateof the subject chemical (liquid,gas, particulate, or aerosol, etc.)and, ffin a mixture, the chemical's concentration: Vacuum charging from drums, sampling from reactor,drumming of product/intermediate, maintenance (changing flange,hose,pipe,valve,filterp,ump or sightglass);materialsmay be handled in a molten or solidstateor dissolvedin organicsolvents;vapors areproduced from molten material;approximate concentrationranges from <1% to 80%. CAS Number 24448-09-7 3M Company 14 3. Provide industrial hygiene monitoring data, ff available, with a brief description of the sampling method and exposure scenario monitored, eg., describe the specific worker activities performed by the individuals monitored. For privacy considerations, please do not include any personal identifiers such as a worker's name or social security number with any data submitted to EPA. There is no chemical-specific personal industrial hygiene monitoring data or area/source monitoringdataforthisspecifimcaterialatthisfacilityF.or most areasof thefacilitrye,cent qualitativaessessmentof potentiaelxposure tothismaterialunder 3M's ongoing industrial hygiene program indicatesa low exposurepotentialtothismaterial. Each 3M plantthatproduces sulfonatedfluorochemicalshas an industriahlygieniston staffand is supportedby a corporateindustriahlygienegroup. 3M's industriahlygiene program focuseson task-basedexposure assessmentand control.Exposures are identifieadnd assessedqualitatively and/orquantitativelyQ.ualitativaessessmentsareperformed by an industriahlygienist. Quantitativeassessmentsincludetask-basedpersonalsampling forcertain,specific fluorochemicalsand/orsourceor areasampling. The resultsofthe assessmentssupportdecisions on exposure control.Engineeringcontrolsarepreferred,butpersonalprotectiveequipment may be used on an interimbasisor when effectivengineeringcontrolisnot feasible. 4. Brieflydescribethe engineeringcontrolsused to minimize exposure to thischemical: Materialsare transferreudsing closedpiping(where possible)from reactorvesselsto other containers.Vacuum chargingofmaterialsfrom drums isa standardpractice.Positionablelocal exhaustventilatiohnoods aresituatedatsignificanptointsourcessuch as atdrum bungs when drumming. Generalroom airprovidesfordilutionof airbornematerials. 5. Brieflylistthe personal protectiveequipment your workers regularlywear to prevent exposure of thischemical: Processoperatingstandardslisttherespirato(re.g.s,uppliedair,organicvapor cartridgewith particulatperefilteorr,particulatfeilteringg)l,oveby elastomer(e.g.n,eoprene or nitrile), chemicalprotectivcelothing(e.g.2,-piecePVC rainsuit)e,ye protectio(ne.g.c,hemical splash goggleswith or withoutfullfaceshieldepending on typeofrespiratoursed)tobe used by the employee when the taskinvolvesexposureto a particulafrluorochemicalmaterial. Comments: (Thissectionisavailabletoclariftyheresponsesgiven.Attach additionaplages if desired.) CAS Number 24448-09-7 3M Company 15 3M CoMpgny, SpecialtyMaterialsManufacturingDivision,Decatur,AL This information will assist EPA in characterizing the number of workers potentially exposed and the magnitude, frequency, and duration of potential exposure. When providing monitoring data, ensure that data is linked with worker activitiesdescribed in question 2. 1. Estimate the number of workers potentially exposed routinely to the subject chemical for each of the exposure duration times. If a worker is involved in more than one activity,enter only his/her most typical activity in the table. Don't count a worker more than once. The total number in the table should equal the total number of workers potentially exposed. Hours/Day <10 <0.25 0.25-1 4 1-8 >8 Days/Year 10-100 100-250 4 24 48 24 >250 2. Describe the routine worker activitiesto which the workers in question I are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activities,describe the physical state of the subject chemical (liquid,gas, particulate, or aerosol, etc.)and, ifin a mixture, the chemical's concentration: Vacuum charging from drums, sampling from reactor,drumming of product/intermediate,flaking monomer, maintenance (changing flange,hose,pipe,valve,filterp,ump or sightglass);materials may be handled in a molten or solidstate;vapors areproduced from molten material.Material concentrationranges from <1% to 80%. Exposure alsooccurs when acrylatefluorochemical monomers containing<2% 24448-09-7 areflaked. Wastewater treatmentoperations:collectingand analyzingQC samples, operatingfilter press,monitoring process,and maintenance activitiesm;aterialstypicallypresentin waste stream at lessthan I%. CAS Number 24448-09-7 3M Company 16 3. Provide industrial hygiene monitoring data, ifavailable,with a brief description of the sampling method and exposure scenario monitored, e.g.,describe the specificworker activitiesperformed by the individuals monitored. For privacy considerations, please do not include any personal identifierssuch as a worker's name or socialsecurity number with any data submitted to EPA. Personal sampling for these materials is currently (late 1999 to present) done using OSHA VersatileSampler tubeswith XAD-4 resinand mixed celluloseesteror glassfiberprefilter. Sample analysisisby LC-MS. Previous sampling had employed silicagelacid mist tubes with GC-ECD analysis.See attachedtablefor airsample results. There has been area/sourceairmonitoring data and/orsurfacewipe sampling data collectedfor thismaterialat theplant.Area/source sample resultsand/or surfacewipe sample resultsareused to identifyareas with employee exposure potentialas partof exposure assessment under 3M's industriahlygiene program and arenot measurements of actualemployee exposures. Hence, they arenot includedwith thissubmission. Priorto 1999, these samples were consideredto be semivalidated. Surfacesin production and administrationareaswere sampled in 1998. A glassfiberfiltewretted with methyl alcoholwas wiped insidea 10 cm x 10 cm squarewith analysisby LC-MS. Results indicatedthe presence of these materialson floorsand equipment surfacesin production areas. This resultedin improvements in Hazard Communication practicesp,ersonal hygiene emphasis, personalprotectiveequipment emphasis, and severalengineeringand administrativechanges. The sample resultsof any airmonitoring are compared to 3M's voluntaryexposure guideline (EG) of 0.1 mg/m3 (milligramsof fluorochemicalper cubicmeter of air)forvarious fluorochemicalcompounds, includingcompounds covered in thissubmittal.The EG isan 8-hour time-weighted average (TWA) personalbreathingzone exposure chosen to minimize potentialfor uptake. Each 3M plantthatproduces sulfonatedfluorochemicalshas an industriahlygieniston staffand is supported by a corporateindustriahlygiene group. 3M's industriahlygiene program focuses on task-basedexposure assessment and control.Exposures are identifiedand assessedqualitatively and/orquantitatively.Qualitativeassessments are performed by an industriahlygienist. Quantitativeassessments include task-basedpersonal sampling for certain,specific fluorochemicalsand/or source or area sampling. The resultsof the assessments support decisions on exposure control.Engineering controlsarepreferred,but personalprotectiveequipment may be used on an interimbasisor when effectiveengineeringcontrolisnot feasible. CAS Number 24448-09-7 3M Company 17 Air Sampline Data for24448-09-7 Job Sample Classification number Chemical Operator Building3 Chemical Operator Flaker Team Leader Building3 Team Leader Flaker 94-031 94-032* 94-034* 94-037* 94-038* 94-039* 94-041 * 94-046* 94-050* 95-006* 95-007* 95-014* 95-040* 95-024 97-091 94-036 94-047* 94-051 * 94-054* 94-055* 98481 98-098 Concentration Minimum Maximum (mg/m3) (mg/m3) (mglm3) Totals 4 <0.002 1.5 <0.01 <0.01 <0.005 0.004 0.003 <0.006 <0.01 <0.005 0.01 <0.003 <0.003 <0.002 0.37 <0.003 0.15 <0.003 <0.02 <0.005 <0.005 0.005 1.5 0.031 Geometric Mean 0.013 Geometric Standard Deviation 7.1 The valueforthissample isone ofseveralfluorochemicaalnalytescollectedon the sample. Samples are allpersonalbreathingzone samples taken overthe durationofa specifitcask. CAS Number 24448-09-7 3M Company 18 4. Briefly describe the engineering controls used to minimize exposure to this chemical: Materials are transferredusing closed piping (where possible) from reactor vessels to other containers.Vacuum chargingofmaterialsfrom drmns isa standardpractice.Localexhaust ventilatiohnoods aresituateadtsignificanptointsourcessuchas atdrum bungs when drumming. Some equipment,such as theRaker,isequippedwithlocalexhaustventilationG.eneralroom air provides fordilutionof airbornematerials.Operator controlrooms are segregatedfrom process areas and provided separateroom airventilation. 5. Briefly listthe personal protective equipment your workers regularly wear to prevent exposure of thischemical: Specificpersonal protectiveequipment isindicated on written operating procedures used by process operators. Respiratory protection: Tasks with significantexposure potential(charging,drumming, some maintenance tasks)areperformed using positivepressure,pressuredemand fullface suppliedair respiratorsT.asks with moderate exposure potential(shortterm sampling from taps or drums, and some maintenance tasks)areperformed using fullfaceair-pufifyinrgespiratorwsith organic vapor cartridgesand P 100 prefilters. Hand protection: All tasksidentifiedas having potentialfor hand contactrequireneoprene (Scorpio)or nitriliendustriaglloves. Body protection:Exposure significanttasksuse one ortwo-piecePVC suits.Aprons may be wom forsome low exposure potentialtasks such as sampling. Foot protection: Tasks identifieads posing a significanftootexposure potentialrequire chemical resistantboots. Comments: desired.) (Thissectionisavailableto clarifytheresponsesgiven. Attach additionalpages if Current exposures are expected to be lessthan those measured in the recentpast. Significant sources of exposure have been identifieadnd eliminated.In 1998 an extensivearea airsampling of theproduction areas was performed. Areas with higherlevelsof airbornematerialswere investigatedfurtherto identifysources.These sources,which includetheflakingequipment, are in the process of being eliminatedor reduced through replacement with betterventilated equipment. In addition,theventilatiosnystem in theprimary productionbuilding(3)isbeing upgraded. The fluorochemicalhazard communication program was improved upon in 1998. This has resultedin improved exposure avoidance behaviors among production employees and betteruse of personalprotectiveequipment requirements. CAS Number 24448-09-7 3M Company 19 Additionalhand wash facilitiheasve been installeidnprimaryprocessbuildings.Food consumption and otherhand-to-mouthactivitiaerseprohibited.There isno smoking inprocess buildings.Processemployeesareinstructetdoremove and leavetheirwork bootsand work coverallasttheplant.Work coverallasreprofessionallyaundered. Non-productionequipmentsurfacesuch as floorsd,oorknobsand stairailasrecleaned frequently. CAS Number 24448-09-7 3M Company 20 VII. CHEMICAL END USES A. END USE AS AN INTERMIEDIATE CONSUMED TO MAKE OTHER CHEMICALS Al. On-Site Use as a Intermediate: Intermediateconsumed intheproductionof severalpolymericproductswhich are used as protectivetreatmentsfor carpeting,upholstery,and leather. Product chemical class or product chemical (Include CAS number ifappropriate) % of total volume of subject chemical manufactured or imported 1. Fluorochemical Adipate 35-40% 2. Fluorochemical Urethane 1-5% 3. Fluorochemical Ester 1-5% 4. Fluorochemical Ester <1% Intermediateconsumed in theproductionof otherintermediatesto be furtherreacted to form polymeric materials. Product chemical class or product chemical (Include CAS number ifappropriate) % of total volume of subject chemical manufactured or imported 1. N-methyl perfluorooctanesulfonamidoethyalcrylate CAS 25268-77-3 50-55% 2. N-methyl perfluorooctanesulfonamidoethymlethacrylate CAS 14650-24-9 1-5% A2. Off-SiteUse as an Intermediate As reported in Part M, p.2 Product chemical class or product chemical (Include CAS number ifappropriate) 1. Not applicable. % of total volume of subject chemical manufactured or imported As reported in Part IH, p.2 CAS Number 24448-09-7 3M Company 21 B. END USES OTHER THAN AS A CONSUMED INTERMEEDIATE Use Number I of 5 Descriptionof Chemical End Use: This CAS number isused as an intermediatteo manufacturepolymersthataresoldtoindustriaulserstobe millappliedasprotective, repellentreatmentsforupholstery.The upholsterywillbe used by consumers and commercialindustry.This CAS number itselwfillbe presentintheseproductsatlow levels asa residual. Percentof totalmanufactured or imported volume going to thisuse: 1-2 Check allphysicalforms of the chemical during thisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.Average values are acceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor Liquid solution Other(Explain) Use Number 2 of 3 Description of Chemical End Use: This CAS number isused as an intermediateto manufacture polymers thataresoldto indusftw usersto be millappliedas protective, repellenttreatmentsforcarpeting.The upholsterywillbe used by consumers and commercial industry.This CAS number itselwfillbe presentinthese productsatlow levelsas a residual. Percent of totalmanufactured or imported volume going to thisuse: <2 Check allphysicalforms of the chemical duringthisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.Average values are acceptable: x <1% 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 24448-09-7 3M Company 22 Use Number 3 of 5 Descriptionof Chemical End Use: ThisCAS number isused asan intermediatteo manufacturepolymersthataresoldto industriaulsersto be millappliedas protective, repellenttreatmentsforupholstery.The upholsterywillbe used by consumers and commercial industry.This CAS niunber itselwfillbe presentin theseproductsat low levels as a residual. Percent of totalmanufactured or imported volume going to thisuse: < 0.1 Check allphysicalforms of the chemical during thisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.A@erage values are acceptable: X <1% (<2000ppm) 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor , Liquid solution Other (Explain) Use Number 4 of 5 Description of Chemical End Use: This CAS number isused as an intermediateto manufacture polymers thataresold to industriaulsersto be mill appliedas protective, repellenttreatmentsforupholstery.The upholsterywillbe used by consumers and commercial industry.This CAS number itselfwillbe presentin theseproductsat low levels as a residual. Percent of totalmanufactured or imported volume going tothisuse: < 0.1 Check allphysicalforms of the chemical duringthisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.Average values are acceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor Liquid solution Other (Explain) CAS Number 24448-09-7 3M Company 23 Use Number 5 of 5 DescriptionofChemical End Use: This CAS number isused asan intermediatteo manufacturepolymers thataresoldto industriaulserstobe millappliedas protective, repellentreatmentsforupholstery.The upholsterywillbe used by consumers and commercialindustry.ThisCAS number itselwfillbe presentintheseproductsatlow levels as a residual. Percent of totalmanufactured or imported volume going to thisuse: < 2 Check allphysicalforms of the chemical duringthisuse: Ifused in a mixture check appropriatebox to indicateweight fraction.Averagt values are acceptable: <1% 1-30% 30-60% X 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor x Liquid solution Other (Explain)