ISO 1914-1972 工业用硼酸硼酸含量的测定容量法
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【英文标准名称】:Boricacidforindustrialuse;Determinationofboricacidcontent;Volumetricmethod
【原文标准名称】:工业用硼酸硼酸含量的测定容量法
【标准号】:ISO1914-1972
【标准状态】:作废
【国别】:国际
【发布日期】:1972-05
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC47
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;化学分析;酸;硼酸;含量测定;容量分析
【英文主题词】:determinationofcontent;volumetricanalysis;acids;chemicalanalysisandtesting;boricacid
【摘要】:Themethodisbasedontitrationofadissolvedtestportionwithastandardvolumetricsolutionofsodiumhydroxideinthepresenceofmannitolorsorbitol,usingphenolphthaleinasindicator.Waterfreefromcarbondioxide,shallbeusedinthetest.
【中国标准分类号】:G10
【国际标准分类号】:71_060_30
【页数】:1P;A4
【正文语种】:英语
基本信息
标准名称: | 航天器模态计算方法 |
发布部门: | 中华人民共和国国家质量监督检验检疫总局 中国国家标准化管理委员会 |
发布日期: | 2012-12-31 |
实施日期: | 2013-07-01 |
首发日期: | |
作废日期: | |
出版社: | 中国标准出版社 |
出版日期: | 2013-07-01 |
适用范围
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前言
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目录
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引用标准
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所属分类: 矿业 矿业综合 基础标准与通用方法 采矿和矿产品 金属矿
【英文标准名称】:StandardPracticeforCalculatingViscosityofaBlendofPetroleumProducts
【原文标准名称】:计算石油产品混合物粘性的标准实施规程
【标准号】:ASTMD7152-2005e1
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D02.07
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:粘度;混合物;石油产品
【英文主题词】:blending;kinematicviscosity;MacCoull;viscosity;Wright
【摘要】:Predictingtheviscosityofablendofcomponentsisacommonproblem.BoththeWrightBlendingMethodandtheASTMBlendingMethod,describedinthispractice,maybeusedtosolvethisproblem.Theinverseproblem,predicatingtherequiredblendfractionsofcomponentstomeetaspecifiedviscosityatagiventemperaturemayalsobesolvedusingeithertheInverseWrightBlendingMethodortheInverseASTMBlendingMethod.TheWrightBlendingMethodsaregenerallypreferredsincetheyhaveafirmerbasisintheory,andaremoreaccurate.TheWrightBlendingMethodsrequirecomponentviscositiestobeknownattwotemperatures.TheASTMBlendingMethodsaremathematicallysimplerandmaybeusedwhenviscositiesareknownatasingletemperature.Althoughthispracticewasdevelopedusingkinematicviscosityandvolumefractionofeachcomponent,thedynamicviscosityormassfraction,orboth,maybeusedinsteadwithminimalerrorifthedensitiesofthecomponentsdonotdiffergreatly.Forfuelblends,itwasfoundthatviscosityblendingusingmassfractionsgavemoreaccurateresults.Forbasestockblends,therewasnosignificantdifferencebetweenmassfractionandvolumefractioncalculations.Thecalculationsdescribedinthispracticehavebeencomputerizedasaspreadsheetandareavailableasanadjunct.31.1Thispracticecoverstheproceduresforcalculatingtheestimatedkinematicviscosityofablendoftwoormorepetroleumproducts,suchaslubricatingoilbasestocks,fuelcomponents,residuawithkerosine,crudeoils,andrelatedproducts,fromtheirkinematicviscositiesandblendfractions.1.2Thispracticeallowsfortheestimationofthefractionofeachoftwopetroleumproductsneededtoprepareablendmeetingaspecificviscosity.1.3Thispracticemaynotbeapplicabletoothertypesofproducts,ortomaterialswhichexhibitstrongnon-Newtonianproperties,suchasviscosityindeximprovers,additivepackages,andproductscontainingparticulates.1.4ThevaluesstatedinSIunitsaretoregardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Logarithmsmaybeeithercommonlogarithmsornaturallogarithms,aslongasthesameareusedconsistently.Thispracticeusescommonlogarithms.Ifnaturallogarithmsareused,theinversefunction,exp(),mustbeusedinplaceofthebase10exponentialfunction,10,usedherein.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E30
【国际标准分类号】:75_080
【页数】:9P.;A4
【正文语种】: