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【英文标准名称】:Potassiumchlorideforindustrialuse;Determinationofpotassiumcontent;Potassiumtetraphenylborategravimetricmethod
【原文标准名称】:工业用氯化钾钾含量的测定四苯基硼酸钾重量法
【标准号】:ISO2051-1976
【标准状态】:作废
【国别】:国际
【发布日期】:1976-02
【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;含量测定;重量分析;钾;化学制品;氯化钾;四苯基硼酸盐
【英文主题词】:determinationofcontent;potassium;tetraphenylborates;chemicals;chemicalanalysisandtesting;gravimetricanalysis
【摘要】:ThemethodisapplicabletoproductshavingaminimumKCLcontentofabout95%(m/m).Theprincipleconsistsindissolutionofatestportiontakenfromthelaboratorysample,previouslygroundandsifted.Additionofformaldehydesolutiontotransformanyammoniumionspresentintohexamethylenetetramine,andofethylenedinitrilotetraaceticacid,disodiumsalt,tocomplexanyextraneouscationspresentwhichcouldcauseexcesserrors.Theseadditionsinnocasehaveadetrimentaleffectonitsprecisionorreproducibility.Precipitationofthepotassiumbysodiumtetraphenylborateinaweaklyalkalinemedium,dryingandweighingoftheprecipitate.
【中国标准分类号】:G10
【国际标准分类号】:71_060_50
【页数】:3P;A4
【正文语种】:英语


【英文标准名称】:Plasticspipingsystemsfornon-pressureundergrounddrainageandsewerage-Polyethylene(PE)-Part1:Specificationsforpipes,fittingsandthesystem;EnglishversionofDINEN12666-1:2006-03
【原文标准名称】:无压地下排水和排污塑料管道系统.聚丙烯(PP).第1部分:管道、配件和系统规范.德文版本EN12666-1-2005
【标准号】:DINEN12666-1-2006
【标准状态】:作废
【国别】:德国
【发布日期】:2006-03
【实施或试行日期】:2006-03-01
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:弯管联接器;连接;连接器;定义;直径;尺寸;适用性;配件;法兰连接;法兰管件;重力;热熔铁焊接;热线圈焊接;地面排水工程;作标记;材料;机械联动设备;机械性能;聚乙烯;聚乙烯管道;物理性能;管接头;管;管系统;塑料管道;塑料管;塑料;特性;质量;抗焊接设备;密封环;污水工程;下水道;柄;单分支;管套;规范(验收);公差(测量);地下;水常规
【英文主题词】:Bendcouplings;Connections;Connectors;Definition;Definitions;Diameter;Dimensions;Fitnessforpurpose;Fittings;Flangeconnections;Flangedfittings;Gravity;Heatedtoolwelding;Heatingcoilwelding;Joints;Landdrainageworks;Marking;Materials;Mechanicallinkages;Mechanicalproperties;PE;PEpipes;Physicalproperties;Pipeconnections;Pipes;Pipingsystem;Plasticpipelines;Plasticpipes;Plastictubes;Plastics;Polyethylene;Properties;Quality;Resistanceweldingfittings;Sealingrings;Sewerage;Sewers;Shanks;Singlebranches;Sleeves;Specification(approval);Tolerances(measurement);Underground;Waterpractice
【摘要】:ThisPartofEN12666specifiestherequirementsforpipes,fittingsandthesystemofpolyethylene(PE/pipingsystemsintendedtobeusedfornon-pressureundergrounddrainageandsewerageoutsidethebuildingstructure(applicationareacode"U"').andnonpressureundergrounddrainageandsewerageforbothburiedinthegroundwithinthebuildingstructure(applicationareacode"D")andoutsidethebuildingstructure.Thisisreflectedinthemarkingofproductsby"U"and"UD".ItalsospecifiesthetestparametersforthetestmethodsreferredtointhisEuropeanStandard.ThisEuropeanStandardcoversarangeofnominalsizes,arangeofpipeseries/stiffnessclassesandgivesrecommendationsconcerningcolours.NOTE1Itistheresponsibilityofthepurchaserorspecifiertomaketheappropriateselectionfromtheseaspects,takingintoaccounttheirparticularrequirementsandanyrelevantnationalregulationsandinstallationpracticesorcodes.InconjunctionwithCEN/TS12666-2M]itisapplicabletoPEpipesandfittings,theirjointsandtojointswithcomponentsofotherplasticsandnon-plasticsmaterialsintendedtobeusedforburiedpipingsystemsfornon-pressuredrainageandsewerage.ThisEuropeanStandardisapplicabletoPEpipeswithorwithoutanintegralsocket.Thefittingscanbemanufacturedbyinjection-mouldingorbefabricatedfrompipesand/ormouldings.-I"hisEuropeanStandardisapplicabletoPEpipesandfittingsforthefollowingtypesofjoints:elastomericringsealjoints;buttfusedjoints;--electrofusionjoints;mechanicaljoints.NOTE2Requirementsandlimitingvaluesforapplicationareacode"D"aregiveninTables3,6andTable12.NOTE3Pipes,fittingsandothercomponentsconformingtoanyoftheplasticsproductstandardslistedinthebibliographymaybeusedwithpipesandfittingsconformingtothisEuropeanStandard,providedtheyconformtotherequirementsforjointdimensionsgiveninClause6andtotherequirementsofTable8andTable12.
【中国标准分类号】:P41
【国际标准分类号】:23_040_01;91_140_80;93_030
【页数】:33P.;A4
【正文语种】:英语