【英文标准名称】:StandardTestMethodfor2,6-di-tert-Butyl-p-Cresoland2,6-di-tert-ButylPhenolinElectricalInsulatingOilbyInfraredAbsorption
【原文标准名称】:用红外线吸收法测定电绝缘油中2,6-二叔丁基对甲酚和2,6-二叔丁基对苯酚的标准试验方法
【标准号】:ASTMD2668-2007
【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】:D27.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:甲酚;含量测定;电气工程;电绝缘;红外线;绝缘液体;绝缘油;苯酚;测试
【英文主题词】:2,6-ditertiary-butylparacresol;2,6-ditertiary-butylphenol;electricalinsulatingoil;infraredabsorption;BHT(butylatedhydroxytoluene);2,6-ditert-Butylp-cresol/phenolcontent;Electricalinsulatingoils;Infrared(IR)analysis;Inf
【摘要】:Thequantitativedeterminationof2,6-ditertiary-butylparacresoland2,6-ditertiary-butylphenolinanewelectricalinsulatingoilmeasurestheamountofthismaterialthathasbeenaddedtotheoilasprotectionagainstoxidation.Inausedoilitmeasurestheamountremainingafteroxidationhasreduceditsconcentration.Thetestisalsosuitableformanufacturingcontrolandspecificationacceptance.Whenaninfraredspectrumisobtainedofanelectricalinsulatingoilinhibitedwitheitherofthesecompoundsthereisanincreaseinabsorbanceofthespectrumatseveralwavelengths(orwavenumbers).2,6ditertiary-butylparacresolproducespronouncedincreasesinabsorbanceat2.72x03BC;m(3650cmx2212;1),and11.63x03BC;m(860cmx2212;1).2,6ditertiary-butylphenolproducespronouncedincreasesinabsorbanceat2.72x03BC;m(3650cmx2212;1)and13.42x03BC;m(745cmx2212;1).Whenmakingthistestonotherthanahighlyoxidizedoilorwhenusingadouble-beamspectrophotometer,ithasbeenfoundconvenienttoobtainthespectrumbetween2.5x03BC;m(4000cmx2212;1)and2.9x03BC;m(3450cmx2212;1)becausetheinstrumentiscompensatedforthepresenceofmoistureandthebandisnotinfluencedbyintermolecularforces(associations).However,whentestingahighlyoxidizedoilorwhenusingasingle-beaminstrumentbetterresultsmaybeobtainedifthescanismadebetween10.90x03BC;m(918cmx2212;1)and14.00x03BC;m(714cmx2212;1).Increasedabsorptionat11.63x03BC;m(860cmx2212;1)or13.42x03BC;m(745cmx2212;1)orboth,willidentifytheinhibitoras2,6-ditertiary-butylparacresolor2,6-ditertiary-butylphenolrespectively(Note1).Note18212;Theabsorbanceat745cmx2212;1for2,6-ditertiary-butylphenolandat860cmx2212;1for2,6-ditertiary-butylparacresolforequalconcentrationswillbeintheapproximateratioof2.6to1.1.1Thistestmethodcoversthedeterminationoftheweightpercentof2,6-ditertiary-butylparacresol(DBPC)and2,6-ditertiary-butylphenol(DBP)inneworusedelectricalinsulatingoilinconcentrationsupto0.5%bymeasuringitsabsorbanceatthespecifiedwavelengthsintheinfraredspectrum.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:E38
【国际标准分类号】:29_040_10
【页数】:6P.;A4
【正文语种】:
基本信息
| 标准名称： | 下井仪器外径尺寸系列 |
| 中标分类： |
石油 >>
石油勘探、开发、集输设备 >>
石油物探测井设备与仪器 |
| 发布日期： | |
| 实施日期： | 1988-07-01 |
| 首发日期： | |
| 作废日期： | |
| 出版日期： | |
| 页数： | 3页 |
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所属分类： 石油 石油勘探 开发 集输设备 石油物探测井设备与仪器