【英文标准名称】:StandardTestMethodsforPolyurethaneRawMaterials:DeterminationofAcidandAlkalinityNumbersofPolyols
【原文标准名称】:聚氨酯原材料的标准试验方法:多元醇酸、碱值的测定
【标准号】:ASTMD4662-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D20.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:acidity;acidnumber;alkalinitynumber;polyols;Polyols;Polyurethanerawmaterials--polyols;Reactivity;Titration;Acidity,alkalinity,pH--plastics;Acidnumber;Alkalinity;Batch-to-batchuniformity;Correctionfactors;Hydroxylnumbers
【摘要】:Thesetestmethodsaresuitableforqualitycontrol,asspecificationtests,andforresearch.Theacidandalkalinitynumbersindicatetheextentofareactionwithacids.Theresultsaremeasuresofbatch-to-batchuniformityandmaybeusedascorrectionfactorsincalculatinghydroxylnumber.1.1Thesetestmethodsmeasuretheacidicandbasicconstituentsinpolyolsandothermaterialsofhighacidityoralkalinitythataresolubleinmixturesoftolueneandethylalcohol.Thesetestmethodsdonotapplytopolyethers.(SeeNote1.)1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothisstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:3P.;A4
【正文语种】:英语