Full Public Report

File No: NA/274

Date:21September1995

NATIONALINDUSTRIALCHEMICALSNOTIFICATIONANDASSESSMENTSCHEME

FULL PUBLIC REPORT

PolymerinEmulsionX935-2020andEmulsionX935-2031

ThisAssessmenthasbeencompiledinaccordancewiththeprovisionsoftheIndustrialChemicals(NotificationandAssessment)Act1989,andRegulations.ThislegislationisanActoftheCommonwealthofAustralia.TheNationalIndustrialChemicalsNotificationandAssessmentScheme(NICNAS)isadministeredbyWorksafeAustraliawhichalsoconductstheoccupationalhealthsafetyassessment.TheassessmentofenvironmentalhazardisconductedbytheDepartmentoftheEnvironment,Sport,andTerritoriesandtheassessmentofpublic healthisconductedbytheDepartmentofHumanServicesandHealth.

Forthepurposesofsubsection78(1)oftheAct,copiesofthisfullpublicreportmaybeinspectedbythepublicattheLibrary,WorksafeAustralia,92-94ParramattaRoad,Camperdown NSW2050,betweenthehoursof10.00a.m.and12.00noonand2.00

p.m.and4.00p.m.eachweekdayexceptonpublicholidays.

ForEnquiriespleasecontacttheAdministrationCoordinatorat:

Street Address: 92ParramattaRdCamperdown,NSW2050,AUSTRALIA

Postal Address:GPOBox58,Sydney2001,AUSTRALIA

Telephone:(61)(02)565-9466FAX (61) (02) 565-9465

Director

ChemicalsNotificationandAssessment

NA/274

FULL PUBLIC REPORT

PolymerinEmulsionX935-2020andEmulsionX935-2031

1.APPLICANT

DuluxAustraliaofMcNaughtonRd,ClaytonVIC3168hassubmittedalimitednotificationfortheassessmentofthenewsyntheticpolymerinEmulsionX935-2020andEmulsionX935-2031.

2.IDENTITY OF THE CHEMICAL

ThepolymerinEmulsionX935-2020andEmulsionX935-2031isnotconsideredtobehazardousbasedonthenatureofthechemicalandthedataprovided. Thereforethechemicalname,CASnumber,molecularformula,structuralformulae,molecularweight,monomercompositionandspectraldatahavebeenexemptedfrompublicationintheFullPublicReportandtheSummaryReport.

Trade names:EmulsionX935-2020EmulsionX935-2031

Maximum percentage of low molecular weight species

(molecular weight < 1000):3.2%1000;1.2%500(EmulsionX935-2020)

1.7%1000;0.7%500(EmulsionX935-2031)

3.PHYSICALANDCHEMICALPROPERTIES

Thenotifiedpolymerispreparedasa23%emulsioninwaterandisneverisolated. Thefollowingdatawereprovidedforthepolymeremulsion.

Appearance at 20°C and 101.3 kPa:Thepolymeremulsionisawhiteopaqueliquid

withasweetodour

BoilingPoint:100°C(water)

SpecificGravity:1.010(estimatedtobe1.11forthepolymer)

Vapour Pressure:Expectedtobethatofwater(thepolymeritselfisnotexpectedtobevolatilebasedonanalogywithsimilarpolymers)

WaterSolubility:Expectedtobeinsolubleinwaterbyanalogywithsimilarpolymers

PartitionCo-efficient

(n-octanol/water)log Pow:Not provided

HydrolysisasafunctionofpH:Not provided

Adsorption/Desorption:Not provided

DissociationConstant:Not provided

FlashPoint:Not provided

FlammabilityLimits:Notflammable

CombustionProducts:Thepolymerwouldbecombustibleifthewateris

evaporatedfromtheemulsion. Combustionproductswillbecarbondioxideandwater.

ExplosiveProperties:Theemulsionwillnotdetonateasaresultofheat,shockorfriction

Reactivity/Stability:Mayreactwithstrongoxidisers

Thepolymerisneverisolatedandismanufacturedasa23%emulsioninwater.

Withregardtosolubilityandhydrolysisthenotifiermaintainsthat"byanalogywithsimilarpolymers,thepolymerisinsolubleinwaterandisnotsubjecttohydrolysis. However,neithercanbemeasuredasthechemicalisneverisolated". LowwatersolubilityisafunctionofacrylicpaintresinsandwouldprecludehydrolysisoftheesterfunctionalitiesatenvironmentalpH.

Nodataonpartitioncoefficient(n-octanol/water)wasprovidedasthispolymerisnotanticipatedtocrossbiologicalmembranesbecauseofitshighmolecularweight.

Nodatawassuppliedonadsorption/desorption.However,asthewaterevaporatesfromthepolymeremulsionitwillbecomemoreviscousandstickyandreadilybindtothesoil,therebybecomingimmobilised.

Nodissociationconstanthasbeensuppliedduetotheinabilitytoisolatethepolymerfromthesuspensionagent.

Theseexplanationsareacceptableforthisformulationandclassofpolymer.

4.PURITYOFTHECHEMICAL

Thechemicalcontainsnohazardousresidualmonomersorimpuritieswhicharepresentatlevelsnecessarytoclassifyitasahazardoussubstance(1). ThereforeinformationonthechemicalpurityhasbeenexemptedfrompublicationintheFullPublicReportandtheSummaryReport.

5.INDUSTRIALUSE

Thenotifiedpolymerisafilmformingcomponentinpaintsusedaspartofabasecoattobeappliedtorepairedcarbodiesbysprayguninenclosedspraybooths.

ThenotifiedpolymerwillnotbemanufacturedinAustralia. Itwillbeimportedasacomponentoftheautomotivecoating,Aquabase,in1and2.5Lcontainersandtransportedbyroadtomostlargetownsandcitieswheretherearevehiclerepairandrepaintingfacilities.

Thenotifiedpolymerwillbeimportedatarateof10-100tonnesperannum.

6.OCCUPATIONALEXPOSURE

Thenotifiedpolymerwillbeimportedinanautomotivepaintin1and2.5Lcontainersandtransportedtodistributorsbyroad. Thepaintwillthenbeonsoldtolicensedapplicatorswhereitwillbemixedandappliedtocarbodypartsbyspray.

Categoriesofworkerspotentiallyexposedtothepolymerincludetransportandstorageworkers,personnelinvolvedinpaintmixingandapplicationaswellaspersonnelinvolvedinwastedisposal.

Transportandstorageworkerswillonlybeexposedintheeventofaccidentalspillage.

Sprayapplicators(upto1000)areexpectedtobeexposedfor~4hours/day,220daysperyear. Paintapplicationwillbeconductedinsprayboothsequippedwithexhaustventilationandfilteringsystems. Duringpaintpreparation(mixing,stirringanddilutionofthepaint),loadingofthesprayequipment,aswellascleaningofthesprayandmixingequipment,workerswillberequiredtowearanti-staticflameretardantoveralls,anti-staticfootwear,imperviousglovesandeyeprotectionconformingtoAS1337(2). Duringpaintapplication,workerswillberequiredtoworkinasprayboothandwearanairfedbreathingmaskconformingtoAS/NZS1715(3)andAS/NZS1716(4),inadditiontotheabovepersonalprotectiveequipment.

AfterapplicationofAquabase,aclearcoatwillbeappliedtothepaintedsurfaceandthecarpartswillbeheatcuredat~65°C.Duringheatcuringthenotifiedpolymerwillcrosslinkwiththeotherpolymersinthepaintformulationtoformaharddurablelayer.

Personnelinvolvedinwastedisposalshouldnotbeexposedtosignificantquantitiesofthepolymer,asthepaintremainingintheemptycontainersisexpectedtodrytoa“non-leachable”form.

7.PUBLICEXPOSURE

Importedpaintwillbesoldtolicensedapplicatorswhereitwillbemixedandappliedtocarbodypartsbyspray,coatedwithaclearcoatandheatcured. Sprayingwilltakeplaceinenclosedsprayboothswithexhaustventilation. Overspraywillbetrappedbyboothfilters,andpaintthatisremovedbyscrubberswillbeseparatedusingflotationtechniques,andthesludgewillbedisposedtolandfill. Emptycontainers,thatmaycontainupto5%ofthecontents,willbedisposedtolandfills.

Thepublicisunlikelytobeexposedtothepolymerduringanyoftheseoperations.

8.ENVIRONMENTALEXPOSURE

.Release

Attheapplicationsitesthepaintproductswillbesprayedbyacombinationofelectrostaticandairatomisedspray. Transferefficiencyisexpectedtoaverage30%dependingontheapplicationmethod. Theresultantoverspraywillbetrappedbyboothfiltersystems. Thepaintmaterialthatisremovedbyscrubberswillbeseparatedusingflotationtechniques.Thisseparatedsludgewillthenberemovedtolandfillbylicensedwastedisposalcontractors. Themaximumamountofthepaintsludgecontainingthenotifiedsubstanceforannualdisposaltolandfillwillbeabout70tonnes.

Emptycontainersthatmaycontainupto5%ofthecontentswillbedisposedoftolandfill.

.Fate

Althoughthenotifiedsubstanceisapolymerwithhighwatersolubility,degradationinorleachingfromlandfillsitesisnotexpectedasthepolymerwhendisposedofwouldbeinacrosslinked(insoluble)formwiththeotherpolymersinthepaintformulation.

Incinerationofthenotifiedsubstanceisexpectedtoproducewaterandoxidesofcarbonandnitrogen.

Mostofthenotifiedsubstanceisnotexpectedtobereleasedtotheenvironmentuntilithasbeenfullycuredintoasolidpolymermatrixonthesurfaceofthetreatedcarbody.Theresultantmatrixstructurecoveredbythetopcolourcoatshouldlimitthehydrolysisandbiodegradationofthepolymer. Bioaccumulationofthepolymerisunlikelyduetothehighmolecularweightofthepolymer.

9.EVALUATIONOFTOXICOLOGICALDATA

Toxicologicaldataarenotrequiredforpolymersofnumber-averagemolecularweight(NAMW) > 1000 according to theIndustrialChemicals(NotificationandAssessment)Act,1989(theAct)andnodataweresubmittedforthenotifiedpolymer.

10.ASSESSMENTOFENVIRONMENTALEFFECTS

Noecotoxicologicaldatawereprovided,whichisacceptableforpolymersofNAMW

1000accordingtotheAct.

11.ASSESSMENTOFENVIRONMENTALHAZARD

Thepolymerisunlikelytopresentahazardtotheenvironmentwhenitisappliedtothemetalcarbodies.

Thepolymerisalsounlikelytopresentahazardtoaquaticorganismsduetotheend-useapplicationandthepolymer'shighmolecularweight.

Themainenvironmentalexposurewillarisefromlandfilldisposalofapproximately70tonneperannumofrecoveredwastepaintcontainingtheresin. ThewastewouldbewidelydispersedinlandfillsacrossAustraliaandasitisexpectedtobestableandimmobileinsoil,environmentalhazardisexpectedtobelow.

Thepaintcontainingthepolymerresinwillbeappliedtothebodypartsofmotorvehiclesthatarecoveredbythetopcoatandprotectedfromtheenvironment. Ondisposalofthemotorbody,byresmeltingthesteelforrecycling,thepolymerwouldundergohightemperatureincineration.

12.ASSESSMENTOFPUBLICANDOCCUPATIONALHEALTHANDSAFETYEFFECTS

Notoxicologicaldataweresubmittedforthenewpolymerasithasnumber-averagemolecularweight (NAMW)1000andassuchisunlikelytopassbiologicalmembranesandcausesystemiceffects. Thenotifiedpolymerhowevercontainssignificantlevelsoflowmolecularweightspecies(upto17.3%1000). Asthetoxicologicalpropertiesofthelowmolecularweightcomponentsandtheextentofbiologicalabsorptionarenotknown,cautionshouldbeexercisedwhenhandlingthepolymer.

Thepolymercontainsanumberofhazardousimpurities. Thesearepresentatlevelswellbelowthecut-offconcentrationsnecessarytoclassifythepolymerasahazardous

substance(1)andarethereforenotexpectedtocauseanysignificanttoxicologicalconcerns.

ThenotifiedchemicalwillarriveinAustraliaasasmallcomponent(<9%)ofawaterbasedautomotivepaint. Asthepolymerisavailableinliquidform,skinandeyecontactwillbethemainsourcesofoccupationalexposureduringpaintpreparation,equipmentloadingandequipmentcleaning. Inhalationalexposureduringtheseactivitiesisunlikelyasthepolymervapourpressureisexpectedtobelowatroomtemperature. Inhalationalexposureduringpaintapplication,however,willbesignificantasthesprayprocesswillgenerateaerosols.

Theapplicanthasstatedthatanumberofengineeringcontrolsandpersonalprotectivedeviceswillbeusedtolimitexposure. Theuseofawellventilatedsprayboothforsprayapplicationswillreduceworkerexposuretooverspray. Exposuretooverspraywillbefurtherreducedbythewearingofrespiratoryprotection. Theuseofoveralls,glovesandeyeprotectionwillreduceworkerexposureintheeventofsplashingsandspillages.

Therefore,workerexposuretothenotifiedchemicalshouldbelowwhenthepaintproductisusedintheproposedmanner.

Thepublicisnotexpectedtobeexposedtothepolymerwhenusedintheproposedmanner.

13.RECOMMENDATIONS

TominimiseoccupationalexposuretothepolymerinEmulsionX935-2020andEmulsionX935-2031thefollowingguidelinesandprecautionsshouldbeobserved:

.ifengineeringcontrolsandworkpracticesareinsufficienttoreduceexposuretoasafelevel,thenthefollowingpersonalprotectivedevicesshouldbeworn:

-imperviousglovesconformingtoAustralianStandards(AS)AS2161(5),

-protectiveeyegogglesconformingtoAS1337(2),

-protectiveclothingconformingtoAS3765.2(6),and

-protective footwear conforming to AS/NZS 2210 (7).

.ifaerosolsaregenerated,andengineeringcontrolsarenotsufficienttocontrolexposure,thefollowingprotectiveequipmentshouldalsobeworn:

-airpurifyingrespiratoryprotectionconformingtoAS/NZS1715(5).

acopyoftheMaterialSafetyDataSheet(MSDS)shouldbeeasilyaccessibletoemployees.

14.MATERIALSAFETYDATASHEET

TheMaterialSafetyDataSheetfor968-9900SAquabaseWhiteSolidBasic,containingthenotifiedpolymer,wasprovidedinWorksafeAustraliaformat(8).

ThisMSDSwasprovidedbyDuluxAustraliaaspartoftheirnotificationstatement. TheaccuracyofthisinformationremainstheresponsibilityofDuluxAustralia.

15.REQUIREMENTSFORSECONDARYNOTIFICATION

Under theIndustrialChemicals(NotificationandAssessment)Act1989, secondarynotificationofthepolymerinEmulsionX935-2020andEmulsionX935-2031shallberequiredifanyofthecircumstancesstipulatedundersubsection64(2)oftheActarise.Nootherspecificconditionsareprescribed.

16.REFERENCES

1.NationalOccupationalHealthandSafetyCommission, ApprovedCriteriaforClassifyingHazardousSubstances. AustralianGovernmentPublishingService,Canberra,1994.

2.AustralianStandard1337-1992, EyeProtectorsforIndustrialApplications.StandardsAssociationofAustraliaPubl.,Sydney,1992.

3.Australian/NewZealandStandard1715-1994,Selection,UseandMaintenanceofRespiratoryProtectiveDevices. StandardsAssociationofAustralia,StandardsAssociationofNewZealand,1994.

4.Australian/NewZealandStandard1716-1994,RespiratoryProtectiveDevices.StandardsAssociationofAustralia,StandardsAssociationofNewZealand,1994.

5.AustralianStandard2161-1978, IndustrialSafetyGlovesandMittens(excludingelectricalandmedicalgloves). StandardsAssociationofAustraliaPubl.,Sydney,1978.

6.AustralianStandard3765.2-1990, ClothingforProtectionagainstHazardousChemicals Part2Limitedprotectionagainstspecificchemicals. StandardsAssociationofAustraliaPubl.,Sydney, 1990.

7.Australian/NewZealandStandard2210-1994,OccupationalProtectiveFootwear.StandardsAssociationofAustralia,StandardsAssociationofNewZealand,1994.

8.NationalOccupationalHealthandSafetyCommission, GuidanceNotefortheCompletionofaMaterialSafetyDataSheet, 3rdedition. AustralianGovernmentPublishingServicePubl.,Canberra,1991.