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【英文标准名称】:StandardTestMethodforBaseNumberofPetroleumProductsbyPotentiometricPerchloricAcidTitration
【原文标准名称】:用高氯酸电位滴定法对石油产品碱值的标准试验方法
【标准号】:ASTMD2896-2007a
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:碱值;润滑剂;石油产品;试验;滴定法
【英文主题词】:basenumber;perchloricacid;petroleumproducts;potentiometrictitration
【摘要】:Newandusedpetroleumproductscancontainbasicconstituentsthatarepresentasadditives.Therelativeamountsofthesematerialscanbedeterminedbytitrationwithacids.Thebasenumberisameasureoftheamountofbasicsubstanceintheoil,alwaysundertheconditionsofthetest.Itissometimesusedasameasureoflubricantdegradationinservice;however,anycondemninglimitsmustbeempiricallyestablished.1.1Thistestmethodcoversthedeterminationofbasicconstituentsinpetroleumproductsbytitrationwithperchloricacidinglacialaceticacid.1.2ProceduresAandBusedifferenttitrationsolventvolumesandsampleweights.Note1-Aroundrobinonaseriesofnewandusedoilsandadditiveconcentrateshasshownthatthetwoproceduresgivestatisticallyequivalentresults.1.3AppendixX2providestheuseofanalternativesolventsystemwhicheliminatestheuseofchlorobenzeneinthistestmethod.Theuseofthealternativesolventgivesstatisticallyequivalentresults;however,theprecisionisworse.Paragraphprovidesguidancewhencomparingresultsusingthetwodifferentsolvents.1.4Theconstituentsthatmaybeconsideredtohavebasiccharacteristicsincludeorganicandinorganicbases,aminocompounds,saltsofweakacids(soaps),basicsaltsofpolyacidicbases,andsaltsofheavymetals.Note2-ThistestmethodisapplicabletobothfreshoilsandusedoilsasdescribedinSections16,17,and19andAppendixX1.1.5Thistestmethodcanbeusedtodeterminebasenumber>300mgKOH/g.However,theprecisionstatementinSectionhasbeenobtainedonlyonbasenumber300mgKOH/g.1.6ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificwarningstatements,seeSection7,Section10,andX2.2.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:9P.;A4
【正文语种】: