HB 4535.37-1991 Ｋ型孔系组合夹具件 斜向顶紧器
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基本信息
| 标准名称： | Ｋ型孔系组合夹具件 斜向顶紧器 |
| 中标分类： |
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| 发布日期： | 1992-01-23 |
| 实施日期： | 1992-03-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 1页 |
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引用标准
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所属分类：
【英文标准名称】:StandardTestMethodsforSaponificationNumberofPetroleumProducts
【原文标准名称】:石油产品皂化值标准试验方法
【标准号】:ASTMD94-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D02.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:润滑剂;石油产品;皂化值;测试
【英文主题词】:additives;lubricatingoils;potentiometrictitration;saponificationnumber
【摘要】:Petroleumproductscancontainadditivesthatreactwithalkalitoformmetalsoaps.Fatsareexamplesofsuchadditives.Also,certainusedengineoils,especiallyfromturbineorinternalcombustionengines,cancontainchemicalsthatwillsimilarlyreactwithalkali.Thesaponificationnumberexpressestheamountofbasethatwillreactwith1gofsamplewhenheatedinaspecificmanner.Thisthengivesanestimationoftheamountofacidpresentinthesample,thatis,anyfreeacidoriginallypresentplusanycombined(forexample,inesters)thathavebeenconvertedtometalsoapsduringtheheatingprocedure.Saponificationnumbersarealsousedinsettingproductspecificationsforlubricantsandadditives.1.1Thesetestmethodscoverthedeterminationoftheamountofconstituentsinpetroleumproductssuchaslubricants,additives,andtransmissionfluidsthatwillsaponifyundertheconditionsofthetest.Note18212;StatementsdefiningthistestanditssignificancewhenappliedtoelectricalinsulatingoilsofmineraloriginwillbefoundinGuideD117.Experiencehasshownthatfortransformeroils,TestMethodD94,modifiedbyuseof0.1MKOHsolutionand0.1MHCl,ismoresuitable.1.1.1Twotestmethodsaredescribed:MethodA-ColorIndicatorTitration(Sections6-13),andMethodB8212;PotentiometricTitration(Sections14-23).1.2Becausecompoundsofsulfur,phosphorus,thehalogens,andcertainotherelementsthataresometimesaddedtopetroleumproductsalsoconsumealkaliandacids,theresultsobtainedindicatetheeffectoftheseextraneousmaterialsinadditiontothesaponifiablematerialpresent.Resultsonproductscontainingsuchmaterials,onusedinternal-combustion-enginecrankcaseoils,andonusedturbineoilsmustbeinterpretedwithcaution.Note28212;Thematerialsreferredtoabove,whicharenotnormallyconsideredsaponifiablematter,includeinorganicorcertainorganicacids,mostnonalkalisoaps,andsoforth.Thepresenceofsuchmaterialsincreasesthesaponificationnumberabovethatoffattysaponifiablematerialsforwhichthetestmethodisprimarilyintended.Theodorofhydrogensulfideneartheendoftheback-titrationinthesaponificationtestisanindicationthatcertaintypesofreactivesulfurcompoundsarepresentinthesample.Inthecaseofotherreactivesulfur,chlorine,andphosphoruscompoundsandotherinterferingmaterials,nosimpleindicationisgivenduringthetest.Agravimetricdeterminationoftheactualamountoffattyacidsisprobablythemostreliablemethodforsuchcompounds.TestMethodsD128orIPMethod284/86canbeusedtodeterminefattyacidsgravimetrically.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSections6,7,8,10,15,16,17,and19.
【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】:
MIL-STD-1859 (NOTICE 2), MILITARY STANDARD, THERMAL IMAGING DEVICES, PERFORMANCE PARAMETERS OF (27 MAR 1998)., MIL-STD-1859 dated 15 September 1981, is hereby canceled without replacement.
