ASTM_D_5006_-_11.pdf

Designation:D500611An 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 Department of Defense.1.Scope*1.1 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 vol%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 material that can causecentral nervous system,kidney and liver damage.Mercury,orits vapor,may be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercury andmercury containing products.See the applicable product Ma-terial Safety Data Sheet(MSDS)for details and EPAswebsitehttp:/www.epa.gov/mercury/faq.htmfor addi-tional information.Users should be aware that selling mercuryand/or mercury containing products into your state or countrymay be prohibited by law.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 and health practices and determine the applica-bility of regulatory limitations prior to use.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 DiEGME concen-tration,as is the case with the analog HB refractometer,or maydisplay Brix units which must be converted into DiEGMEconcentration.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:3.2.1 DiEGMEDiethylene Glycol Monomethyl Ether3.2.2 FSIIfuel system icing inhibitor4.Summary of Test Method4.1 In order to determine the concentration of DiEGME inaviation fuel,a measured volume of fuel is extracted with a1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products and Lubricants and is the direct responsibility of SubcommitteeD02.J0.04 on Additives and Electrical Properties.Current edition approved May 1,2011.Published June 1,2011.Originallyapproved in 1989.Last previous edition approved in 2010 as D5006101.DOI:10.1520/D5006-11.2For 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.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 fixed ratio of water.The extraction procedure includes suffi-cient agitation and contacting time to ensure that equilibriumdistributions are attained.If using an Analog Refractometer,place several drops of water extract on the measuring surface,point it towards a light source,and take a reading on theinternal scale.The analog HB refractometer will display theactual percent volume of DiEGME on its scale.Users of a Brixrefractometer will follow a