【英文标准名称】:StandardTestMethodforAcidityinMono-,Di-,Tri-andTetraethyleneGlycolbyNon-AqueousPotentiometricTitration
【原文标准名称】:使用非水电位测量滴定法测定单甘醇、双甘醇、三甘醇和四甘醇酸度用标准试验方法
【标准号】:ASTME2679-2009
【标准状态】:现行
【国别】:
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E15.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:乙酸;酸度;二甘醇;乙烯基乙二醇;非水滴定;电位测量;四甘醇;滴定法;三乙基乙二醇
【英文主题词】:aceticacid;acidity;diethyleneglycol;monoethyleneglycol;non-aqueoustitration;potentiometric;tetraethyleneglycol;titration;triethyleneglycol
【摘要】:Thistestmethodprovidesforthequantitativedeterminationoftotalacidityinethyleneglycolsbynon-aqueouspotentiometrictitration.Theruntimefortitrationofethyleneglycolsamplesrangesfrom5to10minwithnosamplepreparationrequired.Thelengthoftimeforatitrationdependsontheamountofacidityinthesampleandtheaciditygenerallyincreasesfrommonoethyleneglycoltothehigherglycolsliketetraethyleneglycol.Acceptablelevelsofacidityinethyleneglycolsvarywiththemanufacturerx2019;sspecificationsbutarenormallybelow200mg/kg.Knowledgeoftheacidityinethyleneglycolsisrequiredtoestablishwhethertheproductqualitymeetsspecificationrequirements.1.1Thistestmethodcoversthedeterminationoftotalacidityasaceticacidincommonlyavailablegradesofmonoethyleneglycol,diethyleneglycol,triethyleneglycolandtetraethyleneglycolusinganon-aqueouspotentiometrictitration.Thistestmethodisusefulfordetermininglowlevelsofacidity,below200mg/kg.1.2Themono-,di-,tri-andtetraethyleneglycolscanbeanalyzeddirectlybythistestmethodwithoutanysamplepreparation.1.3ReviewthecurrentappropriateMaterialSafetyDataSheets(MSDS)fordetailedinformationconcerningtoxicity,firstaidprocedures,andsafetyprecautions.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsstatementsaregiveninthesectiononHazards,Section9.
【中国标准分类号】:G16
【国际标准分类号】:71_080_60
【页数】:8P.;A4
【正文语种】: