ASTM_D_5006_-_11_2021.pdf

Designation:D500611(Reapproved 2021)An American National StandardStandard Test Method forMeasurement of Fuel System Icing Inhibitors(Ether Type)inAviation Fuels1This standard is issued under the fixed designation D5006;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers a technique for measuring theconcentration of Diethylene Glycol Monomethyl Ether(Di-EGME)in aviation fuels.Ameasured volume of fuel,extractedwith a fixed ratio of water,is tested with a suitable refracto-meter to determine the concentration of fuel system icinginhibitor(FSII)in fuel.Precision estimates have been deter-mined for the DiEGME additive using specific extraction ratioswith a wide variety of fuel types.The extraction ratios are highenough that portable handheld refractometers can be used,butnot so high as to sacrifice accuracy or linearity,or both,in the0.01%to 0.25%by volume range of interest.1.2 DiEGME is fully described in Specification D4171 andin other specifications.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 WARNINGMercury has been designated by manyregulatory agencies as a hazardous substance that can causeserious medical issues.Mercury,or its vapor,has been dem-onstrated to be hazardous to health and corrosive to materials.Use Caution when handling mercury and mercury-containingproducts.See the applicable product Safety Data Sheet(SDS)for additional information.The potential exists that sellingmercury or mercury-containing products,or both,is prohibitedby local or national law.Users must determine legality of salesin their location.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D4171 Specification for Fuel System Icing InhibitorsE1 Specification for ASTM Liquid-in-Glass ThermometersE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 analog refractometer,na traditional-style refracto-meter which visually projects a shadowline onto a scale etchedinto a glass reticle.3.1.1.1 DiscussionThe scale,which is magnified by aneyepiece,displays either a direct reading of DiEGMEconcentration,as is the case with the analog HB refractometer,or may display Brix units which must be converted intoDiEGME concentration.3.1.2 Brix refractometer,na refractometer which displaysreadings on the Brix scale.3.1.3 Brix scale,nan expression of the mathematicalrelationship between refractive index and the concentration byweight of pure sucrose in water.3.1.4 digital refractometer,nA refractometer which relieson a solid-state image sensor to measure the refractive index ofa solution,convert the refractive index reading into a particularunit of measure(percent DiEGME),and outputs the results ona digital display.3.2 Acronyms:1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.J0.04 on Additives and Electrical Properties.Current edition approved May 1,2021.Published June 2021.Originallyapproved in 1989.Last previous edition approved in 2016 as D5006 11(2016).DOI:10.1520/D5006-11R21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.13.2.1 DiEGMEDiethylene Glycol Monomethyl Ether3.2.2 FSIIfuel system icing inhibi