欢迎来到天天文库
浏览记录
ID:23097754
大小:141.81 KB
页数:4页
时间:2018-11-04
《ASTM D852-13 苯凝固点测定方法》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、Designation:D852−13StandardTestMethodfor1SolidiÞcationPointofBenzeneThisstandardisissuedunderthefixeddesignationD852;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapp
2、roval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*E691PracticeforConductinganInterlaboratoryStudytoDeterminethePrecisionofaTestMethod1.1Thistestmethodcoversthedeterminationofthesolidi-ficationpointofbenzene.2.2OtherDocument:OSHARegulations,2
3、9CFRparagraphs1910.1000and1.2Indeterminingtheconformanceofthetestresultsusing31910.1200thismethodtoapplicablespecifications,resultsshallberoundedoffinaccordancewiththerounding-offmethodof3.TerminologyPracticeE29.3.1Definitions:1.3ThevaluesstatedinSIunitsaretoberegardedas3.1.1solidificati
4、onpoint,n—anempiricalconstantdefinedstandard.Nootherunitsofmeasurementareincludedinthisasthetemperatureatwhichtheliquidphaseofasubstanceisstandard.inapproximateequilibriumwitharelativelysmallportionof1.4Thisstandarddoesnotpurporttoaddressallofthethesolidphase.safetyconcerns,ifany,assoc
5、iatedwithitsuse.Itisthe3.1.1.1Discussion—Solidificationpointisdistinguishedresponsibilityoftheuserofthisstandardtoestablishappro-fromfreezingpointwhichisdescribedinTestMethodD1015.priatesafetyandhealthpracticesanddeterminetheapplica-Aninterpretationofmolpercentpurityintermsoffreezingbi
6、lityofregulatorylimitationspriortouse.ForspecifichazardpointisgiveninTestMethodD1016.statements,seeSection7.4.SummaryofTestMethod2.ReferencedDocuments4.1Solidificationpointismeasuredbynotingthemaximum22.1ASTMStandards:temperaturereachedduringacontrolledcoolingcycleaftertheD1015TestMetho
7、dforFreezingPointsofHigh-Purityappearanceofasolidphase.HydrocarbonsD1016TestMethodforPurityofHydrocarbonsfromFreez-5.SignificanceandUseingPoints5.1Thistestmethodmaybeusedasacriteriafordetermin-D1193SpecificationforReagentWateringthepurityofbenzene.ThecloserthesolidificationpointD3437Prac
8、ticef
此文档下载收益归作者所有