SAFETYTALKHazardousCommunication#2Thehazardouscommunicationstandardusestwoprimarywaystocommunicatethechemicalhazardstotheemployees:thelabelonthechemicalcontainerandthematerialsafetydatasheet(MSDS)orsafetydatasheet(SDS)asGHSisphasedin.ThefollowingSafetyYalkwillfocusonreadingandunderstandingthedatasheets.MaterialSafetyDataSheets(MSDS)andSafetyDataSheets(SDS)•MSDS/SDSsaretheprimarysourcesofinformationonachemical’shazardousproperties.•MSDSsheetshavearandomformatandwillbereplacedbyDecember2016withastandardized16sectionGHSformatcalledtheSafetyDataSheetorSDS.•ThechemicalsafetydatasheetsforPPDarestoredinlabeledthree-ringbindersinthemainPPDbuildingandineachcustodian’scloset.•Inthefuture,allMSDS/SDSsheetswillbeaccessedelectronically,andthesystemiscurrentlybeingpopulated.MSDS/SDS16SectionsoftheSDS1.IDofthesubstanceandsupplier2.Hazardsidentification(labelingInfo)3.Composition/ingredients4.Firstaidmeasures5.Firefightingmeasures6.Accidentalreleasemeasures7.Handlingandstorage8.Exposurecontrols/PPE9.Physicalandchemicalproperties10.Stabilityandreactivity11.Toxicological12-15.Non-mandatory16.OtherinformationSAFETYTALKHazardousCommunication#2UnderstandingTerminologyonanMSDS/SDS:VaporPressure:Howfastaliquidchemicalevaporates.Thehigherthenumber,themorequicklythechemicalbecomesagas.VaporDensity:Therelativeweightofagascomparedtoair.Lessthan1:thegasislighterthenair(floats);greaterthan1:thegasisheavierthanair(sinks).SpecificGravity:Therelativeweightofaliquidascomparedtowater.Lessthan1:theliquidislighterthanwater;greaterthan1:theliquidisheavierthanwater.Solubility:Abilityofachemicaltodissolve/mixwithwater.pHvalue:Specifieshowacidicorbasicaliquidisbasedonasolution’shydrogenionconcentration.(seeexamplescalebelow)FlammableRange:Percentageinairrequiredtosupportcombustion.Definedasthelower(LEL)andupperexplosivelimit(UEL).Auto-ignitionTemp:Lowesttemperatureneededforspontaneouscombustion.FlashPoint:Lowesttempneededtoformignitablemixtureinair.MeltingPoint:Tempatwhichasolidturnstoaliquid.BoilingPoint:Tempatwhichaliquidturnstoagas.SAFETYTALKReview/DiscussionQuestions:1.WherearetheMSDS/SDSsheetsforthechemicalsyouusestored?2.Aretheyeasilyaccessible?Areanymissing?3.Discusstheterminologyandwhytheymaybeimportantformakingsafedecisions.4.WhenshouldyoureviewandMSDS/SDS,why?PrintedNameSignatureHazardousCommunication#2Questions,concernsorcommentscontacttheEHSDirectoratextension5504.
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