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1、AATCCTestMethod161-2002ChelatingAgents:DisperseDyeShadeChangeCausedbyMetals;ControlofDevelopedin1983byAATCCCommit-teeRA90;editoriallyrevised1985,1988(withtitlechange),2004;editori-allyrevisedandreaffirmed1986,1987,1992,2002.1.PurposeandScope1.1Thistestm
2、ethodprovidesalabora-toryprocedurefor:1.1.1Determiningtheeffectivenessofchelatingagentsindispersedyebathsforinactivatingheavymetalswhichcancauseshadechange.1.1.2Evaluatingthesensitivityofdis-persedyestometalinducedshadechangeFig.1duringdyeing.2.Principl
3、e2.1Theeffectivenessofchelatingagentsinsequesteringmetalsinadye-bath,therebypreventingmetal-inducedshadechange,isdeterminedbytheproto-colinFig.1.2.2Metalsensitivityofdispersedyesisdeterminedbycomparingcontroldyesand标准分享网www.bzfxw.com免费下载testdyesbythepro
4、tocolshowninFig.2.3.Terminology3.1chelatingagent,n.—intextilechemistry,achemicalcapableofin-Fig.2activatingmetalionsbyformationofawatersolublecomplex.SYN:sequester-4.2Pressurizeddyeingequipmentislevelssetbygovernmentalauthoritiesingagent.requiredforsome
5、dyeing.Trainedper-[e.g.,OccupationalSafetyandHealth3.2metalsensitivity,n.—thepropen-sonnelshouldexercisecareandfollowAdministration’s(OSHA)permissiblesityofadyetoproduceanabnormaltheequipmentmanufacturer’sinstruc-exposurelimits(PEL)asfoundin29coloronate
6、xtilematerialwheninthetionsforuseandsafetyprecautions.CFR1910.1000ofJanuary1,1989].Inpresenceofcertainmetalions.4.3Allchemicalsshouldbehandledaddition,theAmericanConferenceof3.3shadechange,n.—achangefromwithcare.GovernmentalIndustrialHygieniststhenormal
7、orexpectedcolorofatextile4.4Inpreparing,dispensingandhan-(ACGIH)ThresholdLimitValues(TLVs)material.dlingaceticacidandphosphoricacid,usecomprisedoftimeweightedaverageschemicalgogglesorfaceshield,impervi-(TLV-TWA),shorttermexposurelimits4.SafetyPrecaution
8、sousglovesandanimperviousapron.(TLV-STEL)andceilinglimits(TLV-C)NOTE:ThesesafetyprecautionsareConcentratedacidsshouldbehandledarerecommendedasageneralguideforforinformationpurposesonly.Thepre-onlyinanadequatelyventilatedlabora-ai
