【英文标准名称】:StandardPracticeforPreparationofSolutionofLiquidVegetableTanninExtracts
【原文标准名称】:植物鞣皮液体提取物溶液制备的标准实施规程
【标准号】:ASTMD4901-1999(2009)
【标准状态】:现行
【国别】:美国
【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】:D31.01
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:analyticalsolution;tanninanalysis;vegetabletanninanalysis;Analyticalsolution;Liquids--leatherapplications;Preparation;Solidphasematerials--leather;Specimenpreparation(general);Tanninganalysis/materials;Vegetable-tannedleather
【摘要】:Theconcentrationoftannininextractsmustbereducedtoanalyticalstrength(4gtanninperL)foranalyses.Vegetabletanninextractsareheterogeneousmixturesofcomponentswithvaryingsolubility.Thesolubilityofsuchextractsisinfluencedbytemperatureandconcentration,whichaffectthedegreeofdispersionandsizeofthecomponentparticles.Whilethesolubilityisbetterinhotwaterthanincoldwater,itisappropriatetodissolveanddisperseanextractinhotwaterandthenletthesolutioncoolslowlytostandardroomtemperature.1.1Thispracticecoversthepreparationofasolutionofliquidextractthatistobeusedinthetanninanalysisofthatextract.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Y45
【国际标准分类号】:59_140_10
【页数】:2P.;A4
【正文语种】:英语