ASTM D6423-1999(2004) 测定酒精、变性燃料酒精和燃料酒精pH值的标准试验方法
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【英文标准名称】:StandardTestMethodforDeterminationofpHeofEthanol,DenaturedFuelEthanol,andFuelEthanol(Ed75-Ed85)
【原文标准名称】:测定酒精、变性燃料酒精和燃料酒精pH值的标准试验方法
【标准号】:ASTMD6423-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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.A0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酒精;变性燃料酒精;燃料酒精;酸性强度;机动车火花点火发动机;潜在腐蚀;PHE
【英文主题词】:acidstrength;automotivesparkignitionenginefuel;corrosionpotential;denaturedfuelethanol;ethanol;fuelethanol;pHe
【摘要】:Theacidstrength,asmeasuredbypHe,isagoodpredictorofthecorrosionpotentialofethanolfuels.Itispreferabletototalaciditybecausetotalaciditydoesnotmeasureacidstrength;overestimatesthecontributionofweakacids,suchascarbonicacid;andmayunderestimatethecorrosionpotentialoflowconcentrationsofstrongacids,suchassulfuricacid.1.1Thistestmethodcoversaproceduretodetermineameasureoftheacidstrengthofhighethanolcontentfuels.Theseincludeethanol,denaturedfuelethanol,andfuelethanol(Ed75-Ed85).Thetestmethodisapplicabletofuelscontainingnominally70volume%ethanol,orhigher,asdescribedinSpecificationsD4806andD5798.1.2AcidstrengthasmeasuredinthistestmethodisdefinedaspHe.ApHevalueforalcoholsolutionsisnotdirectlycomparabletopHvaluesofwatersolutions.1.3ThevalueofpHewilldependsomewhatonthefuelblend,thestirringrate,andthetimetheelectrodeisinthefuel.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:27_060_10
【页数】:3P.;A4
【正文语种】:
【原文标准名称】:测定酒精、变性燃料酒精和燃料酒精pH值的标准试验方法
【标准号】:ASTMD6423-1999(2004)
【标准状态】:现行
【国别】:
【发布日期】:1999
【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.A0
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:酒精;变性燃料酒精;燃料酒精;酸性强度;机动车火花点火发动机;潜在腐蚀;PHE
【英文主题词】:acidstrength;automotivesparkignitionenginefuel;corrosionpotential;denaturedfuelethanol;ethanol;fuelethanol;pHe
【摘要】:Theacidstrength,asmeasuredbypHe,isagoodpredictorofthecorrosionpotentialofethanolfuels.Itispreferabletototalaciditybecausetotalaciditydoesnotmeasureacidstrength;overestimatesthecontributionofweakacids,suchascarbonicacid;andmayunderestimatethecorrosionpotentialoflowconcentrationsofstrongacids,suchassulfuricacid.1.1Thistestmethodcoversaproceduretodetermineameasureoftheacidstrengthofhighethanolcontentfuels.Theseincludeethanol,denaturedfuelethanol,andfuelethanol(Ed75-Ed85).Thetestmethodisapplicabletofuelscontainingnominally70volume%ethanol,orhigher,asdescribedinSpecificationsD4806andD5798.1.2AcidstrengthasmeasuredinthistestmethodisdefinedaspHe.ApHevalueforalcoholsolutionsisnotdirectlycomparabletopHvaluesofwatersolutions.1.3ThevalueofpHewilldependsomewhatonthefuelblend,thestirringrate,andthetimetheelectrodeisinthefuel.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E31
【国际标准分类号】:27_060_10
【页数】:3P.;A4
【正文语种】:
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