【英文标准名称】:StandardTestMethodforAcidNumber(Empirical)ofMaleicAnhydride(MAH)GraftedWaxes
【原文标准名称】:顺丁烯二酸酐(MAH)移植蜡的酸值(经验值)用标准试验方法
【标准号】:ASTMD7389-2007
【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】:D21.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酸值;沥青材料;顺丁烯二酸酐;石油产品;测试;蜡
【英文主题词】:acidanhydridefunction;acidnumber;freeacid;MAHgraftedwaxes;polish;syntheticwaxes;titration;waxes
【摘要】:ThistestmethodisusedtodeterminethefreeacidcontentofMAH-graftedwaxes.ThepotentialhydrolysisoftheanhydridefunctionalityofthiswaxinstoragemakesthemunsuitablefordeterminingfreeacidcontentbyTestMethodD1386.Freeacidcontentisasignificantqualitycontroltest,andisadeterminantoftheutilityofthewax.1.1Thistestmethodcoversthedeterminationoftheacidnumberofmaleicanhydride(MAH)graftedwaxes.Thenumberisobtainedbydirecttitrationofthematerialandindicatestheamountoffreeacidpresent.1.2ThistestmethodisapplicabletoMAH-graftedwaxesbecauseitusesaspecialsamplepreparationstep(7.1)thatisnotrequiredforotherwaxes.Thespecialsamplepreparationreversesthehydrolysisofacidanhydridethatcanoccurduringstorageofthewax.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E43
【国际标准分类号】:75_140
【页数】:2P.;A4
【正文语种】: