ANSI/ASTM D4671-1999 聚氨酯原料.多元醇不饱和度测定方法(08.03)

作者:标准资料网 时间:2024-05-19 07:11:53  浏览:8624   来源:标准资料网

【英文标准名称】:PolyurethaneRawMaterials,DeterminationofUnsaturationofPolyols,MethodforTesting(08.03)
【原文标准名称】:聚氨酯原料.多元醇不饱和度测定方法(08.03)
【标准号】:ANSI/ASTMD4671-1999
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【实施或试行日期】:2000-01-18
【发布单位】:美国国家标准学会(US-ANSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;聚氨酯;塑料
【英文主题词】:plastics;polyurethane;testing
【摘要】:Thesetestmethodsmeasureunsaturationinpolyetherpolyols.(SeeNote0.)TestMethodA,High-VolumeReagentMethodUsesabout50mLof0.1Mmercuricacetatereagentinmethanoland15gormoreofsample.Thesetestmethodsuseanindicatorforcolorimetricdeterminationofanendpoint.Itisrecommendedforpolyolswithlowvalues(below0.01millequivalentspergram(meq/g))ofunsaturationwherelargesamplesizesarerequired.TestMethodB,Low-VolumeReagentMethodUses2mLofca.0.05Mmercuricacetatereagentinmethanolandabout1gofsampleorless.Thesetestmethodsuseapotentiometricdeterminationofanendpoint.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note0ThereisnoequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_080_20
【页数】:
【正文语种】:英语