ISO 4048-2008 皮革.化学试验.可溶于二氯甲烷和游离脂肪酸的物质的测定

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【英文标准名称】:Leather-Chemicaltests-Determinationofmattersolubleindichloromethaneandfreefattyacidcontent
【原文标准名称】:皮革.化学试验.可溶于二氯甲烷和游离脂肪酸的物质的测定
【标准号】:ISO4048-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-02
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和测试;定义;含量测定;二氯甲烷;萃取分析法;脂肪酸;皮革;材料;材料测试;定量分析;试剂;可溶的;物质;测试
【英文主题词】:Chemicalanalysisandtesting;Definitions;Determinationofcontent;Dichloromethane;Extractionmethodsofanalysis;Fattyacids;Leather;Materials;Materialstesting;Quantitativeanalysis;Reagents;Soluble;Substances;Testing
【摘要】:ThisInternationalStandardspecifiesamethodforthedeterminationofthesubstancesinleatherwhicharesolubleindichloromethane.Thismethodisapplicabletoalltypesofleather.Notallfattyandsimilarsubstancescanbeextractedfromleatherwithorganicsolvents;theymaybeinpartsolubleandpartlyboundtotheleather.Ontheotherhand,thesolventcandissolvenon-fattysubstances,e.g.sulfurandimpregnants,bothofwhichcausedifficultyinthedeterminationoftheacidvalueandsaponificationvalueofthefat.ThisInternationalStandardincludestwotechniquesforextractionofthefattysubstances:1)extractionusingtheSoxhletapparatus;and2)extractionusingapressurizedextractionsystem.Astheextractionisfrequentlydoneinconjunctionwithdeterminationofthefreefattyacidcontentoftheleather,asuitableprocedurefordeterminationofthefreefattyacidsextractedbythismethodisincluded.Theapparatusandtechniquedescribedinthismethodarealsosuitablefortheextractionbysolventsotherthandichloromethane(althoughthetemperatureconditionsmayneedtobevariedforhighpressureextraction).
【中国标准分类号】:Y45
【国际标准分类号】:59_140_30
【页数】:6P;A4
【正文语种】:英语