“Consult the SDS” - Connecting Chemistry & Safety€¦ · “Consult the SDS” SamuellaB....
Transcript of “Consult the SDS” - Connecting Chemistry & Safety€¦ · “Consult the SDS” SamuellaB....
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“ConsulttheSDS”
Samuella B.SigmannAppalachianStateUniversity
Boone,NCApril4,2017
®
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Whydowewantastudentto“consultanSDS”?
• Wewantstudentstorecognizethehazardsofthechemicalstheywillbeworkingwith
• Wewanttoengagestudentsinallaspectsofresearch
• TheSDSisarecognizedsourceofinformationorganizedspecificallytoalerttheuseraboutspecifichazards– AstheinstructororPI,haveyoulookedattheSDSforthechemical?
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WillthechemicalsIneedtouseinthisexperiment presenthazard(s)forme?
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http://pairadimes.davidtruss.com/
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WillConsultingaToolProtectaStudentWhenWorkingwithaChemical?
• DoIhavea“good”SDS?• DoIknowwhattolookforonanSDS?
• CanIrecognizeincorrectorincompleteinformationontheSDS?
• WillIdotheassignment?• DoIknowwhentoaskforhelp?
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…butwillanauthoritarianassignmentwillnotprotect studentswhodonothavetheknowledgeand/orskill toworkthroughthe previousquestions?
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IncludeanSDSassignmentasaneducationaltool– thiscanincreaseknowledgeandskillandimprovecultureThiscanstartinteachinglabs,butshoulddefinitelybepursuedintheresearchlab
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DOIHAVEA“GOOD”SDS?AFewGuidelinesforTeachingStudents
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BeSuspiciousofDocumentswithMissingInformation
DoIHaveA“good”SDS?
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OSHADoesNotRegulateNon-MandatorySections
• TheSDSmustalsocontainSections12through15,tobeconsistentwiththeUNGloballyHarmonizedSystemofClassificationandLabelingofChemicals(GHS),butOSHAwillnotenforcethecontentofthesesectionsbecausetheyconcernmattershandledbyotheragencies.
• Section12:– EcologicalInformation
• Section13:– DisposalConsiderations
• Section14:– TransportInformation
• Section15:– RegulatoryInformation
OSHABrief
DoIHaveA“good”SDS?
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https://www.ccohs.ca/oshanswers/chemicals/whmis_ghs/sds.html
“N/A”MeansWhat? “NoDataAvailable”Or
“NotApplicable”
Theycouldsimplymeanthatthepreparerdidnotlocatethedata
DoIHaveA“good”SDS?
DOESNOT=SAFE
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LookForMoreUsefulTerms
DoIHaveA“good”SDS?
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WHATSHOULDILOOKFORONSDS?AFewGuidelinesforTeachingStudents
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SpotCheckGeneralInformation• MakesurethatyouhavetheSDSofyourchemicalinGHS
format– Preferablywiththehazardcodesandcategories• Makesureyouruseisasintendedbythemanufactureror
supplieraslistedontheSDSinSection1• CheckSection2 foranyknownsignsorsymptoms• CheckSection3 toseewhichcomponentsarehazardous• CheckSection8 foraglovematerialrecommendation• CheckSection9 toseeifan“OdorThreshold”hasbeen
established.Notalwaysreliable– butifyouaresmellingsomething,youknowyouarebeingexposed– IsitlowerthantheOELs?WhatisanOEL?
WhatShouldILookForOnAnSDS?
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WhatShouldILookForOnAnSDS?
• ChemicalswhichhavethesepictogramshavesignificanthazardandmayrequiremorethananSDSlook
Socheckthecategoryandbeespeciallyconcernedwhenthechemicalisincategory1
• Chemicalswitha “DANGER”signalword– checktoseewhichhazard(s)triggeredthesignalwordwhentherearemultiplepictograms
http://www.sigmaaldrich.com/safety-center/globally-harmonized.html
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• LookatthetoxicologicaldatainSection11– ThisistheinformationthatmanufacturersusedtoclassifythechemicalforGHSin“AcuteToxicity”category
– Termsyouneedtounderstandhere“LD”and“LC”–Whatanimalwastested?–WhatwastheRouteofEntry(ROE)– Theform ofthechemical?– Refertotheslideon“ReliableInformation”
WhatShouldILookForOnAnSDS?
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GeneralGuidance:Thelowerthelethaldosenumberwithintheeachrow,themoreacutelytoxicthesubstance
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• Whatexposuredataisavailableforthechemical?– CheckSection8.Somanyacronyms(PEL,TLV,STEL,IDLH)!– Refertotheslideon“ReliableInformation”
– Lookattheoccupationalexposuredata– Whyareunitsdifferent?Theunitsofthisdatadependontheformofthechemical• ForsubstancesthataregasandvaporatnormalT&P,ppmforotherforms,mg/m3
• Needtoconvert?TrytheconverteratNIOSH• Needabetterexplanation?TryCCOSH
– GeneralguidanceonOELs– thelowerthenumber,themoreimportantitistoensurethatyourventilationisappropriateandsufficient
WhatShouldILookForOnAnSDS?
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CANIRECOGNIZEINCORRECTORINCOMPLETEINFORMATIONONTHESDS?
AFewGuidelinesforTeachingStudents
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Practice!Comparedocuments–StartwithaFamiliarChemical
NitricAcidCAS7697-37-2
5%AceticAcidCAS8028-52-2
CanIrecognizeincorrectorincompleteinformationontheSDS?
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SDS1
SDS2
NitricAcid
CanIrecognizeincorrectorincompleteinformationontheSDS?
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SDS1 SDS2NitricAcid
CanIrecognizeincorrectorincompleteinformationontheSDS?
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Section5– FirefightingMeasures
Section8– ExposureControls
Section6– AccidentalRelease
NitricAcid
CanIrecognizeincorrectorincompleteinformationontheSDS?
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Section8– ExposureControls
NitricAcid
CanIrecognizeincorrectorincompleteinformationontheSDS?
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SDS1
SDS2
5%AceticAcid
CanIrecognizeincorrectorincompleteinformationontheSDS?
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SDS1
SDS2
CanIrecognizeincorrectorincompleteinformationontheSDS?
5%AceticAcid
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“Theaboveinformationisbelievedtobecorrectbutdoesnotpurporttobeallinclusiveandshallbeusedonlyasaguide.Theinformationinthisdocumentisbasedonthepresentstateofourknowledgeandisapplicabletotheproductwithregardtoappropriatesafetyprecautions.Itdoesnotrepresentanyguaranteeofthepropertiesoftheproduct.”
RememberSDSsare“Legal”Documents
CanIrecognizeincorrectorincompleteinformationontheSDS?
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FindReliableInformation• Lookforpeerrevieweddata– NIH– ChemIDPlus Advanced– PubChem’s LaboratoryChemicalSafetySummaries(LCSSs)(SearchCompounds)
• ConciseInformationonGHShazardclassesandcategories– SigmaAldrich
• InteractiveLearningParadigms,IncorporatedresourcesforunderstandingtermsonSDSs– TheMSDSHyperGlossary– TheMSDSDemystifier
CanIrecognizeincorrectorincompleteinformationontheSDS?
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DOIHAVETODOTHEASSIGNMENT?AFewGuidelinesforTeachingStudents
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UseGroupAssignments
• HaveeachpersonfindanSDSforthechemicalandthenthegroupcancomparequality–Collaborate!(Youmightevenlearnsomething)
DoIHavetoDotheAssignment?
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GradeAssignments
DoIHavetoDotheAssignment?
• Include theSDSassignmentonthesyllabusinclassesandmakeitagradedcomponent
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ProjectRequirement
• Ifitisanupperlevelclasslabandthereareindividualprojects,do
notletworkbeginuntiltheassignmenthasbeencompleted
DoIHavetoDotheAssignment?
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LeadByExample
AstheinstructororPI,haveyoulookedattheSDSforthechemical?
Bereadywhenthestudentshavequestionsbecausetheywillvaluetheassignmentoreffortifyoudo!
DoIHavetoDotheAssignment?
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AskQuestions!Sometimesitcomesdowntotrustingyourinstincttorecognizewhenyoudon’tknowwhatyoudon’tknow!
DoIknowwhentoaskforhelp?
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Whentheyarerecognizingwhattheydon’tknowandthenasking&answeringtherightquestions
DoIknowwhentoaskforhelp?
Howdoyouknowwhenyourstudentsarelearningsafety?
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Acknowledgements
• Asalways,theA.R.SmithDepartmentofChemistryforallowingmethejobflexibilitytopartakeinACSprojects
Questions?