【英文标准名称】:StandardTestMethodforDeterminationoftheUpperLayerSeparatedfromaViscousLiquid
【原文标准名称】:测定粘性液体上层分离的试验方法
【标准号】:ASTMD4948-1989(2006)
【标准状态】:现行
【国别】:
【发布日期】:1989
【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】:D01.21
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;粘度;分离器;液体
【英文主题词】:upperlayer;viscousliquid
【摘要】:TheUnitedNationsCommitteeofExpertsontheTransportofDangerousGoodsintheirrecommendedregulationsplacematerialshavingaflashpointbelow23x00B0;C(73.5x00B0;F)inPackingGroupII.However,ifviscoussubstancessuchaspaintandrelatedcoatings,adhesives,polishes,etc.,meetcertainrequirements,theycanbeplacedinGroupIIIalongwithmaterialshavingaflashpointbetween23and60.5x00B0;C(73.5and140x00B0;F).Oneoftherequirementsisthatlessthan3%ofclearliquidseparatesfromthebulkofthematerialwhensubjectedtothistestmethod.AtthepresenttimemostinternationalregulatorybodiessuchastheInternationalCivilAviationOrganization(ICAO)andtheInternationalMaritimeOrganization(IMO)usetheU.N.Recommendations.ItisanticipatedthatmostnationaltransportationregulatorybodieswilladopttheU.N.Recommendationsastheirregulationsforcontroloftransportationofhazardousmaterials.AtpresenttheUnitedStatespermitsthetransshipmentofhazardousmaterialsthroughtheUnitedStatestoothercountriesunderregulationsoftheIMOandICAO.1.1Thistestmethodcoversthedeterminationoftheamountofliquidseparatedasanupperlayerina24-hperiodfromviscoussolutionsordispersionsthatcontaindispersedsolidssuchaspaints,enamels,pigmentedlacquers,adhesives,polishes,andothersimilarmaterials.Note18212;TheamountofclearliquidthatseparatesduringthistestisoneofthecriteriaintheUnitedNationsRecommendationsontheTransportationofDangerousGoodsfortheplacementofflammableviscousliquidsintopackinggroupsrelatedtoflashpoints(See).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:A43
【国际标准分类号】:07_030
【页数】:2P.;A4
【正文语种】: