1、Designation:D818119Standard Specification forMicroemulsion Blendstock for Preparing MicroemulsionTest Fuel Oils1This standard is issued under the fixed designation D8181;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of las
2、t revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification describes an alcohol-carboxylic acidblend,referred to as the microemulsion blendstock.1.1.1 WarningThe mic
3、roemulsion blendstock should bestored in facilities and equipment designed for oxygenated andlow flashpoint liquids.1.2 The microemulsion blendstock is to be blended withfuel oils to produce a microemulsion test fuel oil that consistsof inverse micelles.NOTE1While no fuel standard currently exists f
4、or a microemulsiontest fuel oil,work to develop one is underway.NOTE2Typical fuel oils that could be used for blending withmicroemulsion blendstock are fuels that comply with Specifications D975and D396 and may contain up to 5%by volume biodiesel.NOTE3Testing with test fuels containing 10%microemuls
5、ionblendstock using B5 as a base fuel did not show any detrimental changesto specified fuel properties relative to B0 base fuels,but can impairmeasurement of microemulsion blendstock concentration.1.2.1 The microemulsion test fuel oil(to be made from thisblendstock)is to be used for testing and demo
6、nstrationpurposes only in specific equipment and vehicles that are suitedfor or have been equipped with safety precautions for use withlow flashpoint fuels and oxygenated fuels such as ethanol.Minimum safety precautions may include flame arrestors andgrounding straps.NOTE4The low flash point of this
7、 blendstock relative to conventionaldiesel fuel increases certain hazards during storage and distribution.1.3 Nothing in this specification shall preclude observanceof federal,state,or local regulations,which may be morerestrictive.1.4 The values stated in SI units are to be regarded asstandard.The
8、values given in parentheses after SI units areprovided for information only and are not considered standard.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,hea
9、lth,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 Internat
10、ional Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D97 Test Method for Pour Point of Petroleum ProductsD130 Test Method for Corrosiveness to Copper from Petro-leum Products by Copper St
11、rip TestD396 Specification for Fuel OilsD445 Test Method for Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D664 Test Method for Acid Number of Petroleum Productsby Potentiometric TitrationD665 Test Method for Rust-Preventing Characteristics ofInhibited Mi
12、neral Oil in the Presence of WaterD974 Test Method for Acid and Base Number by Color-Indicator TitrationD975 Specification for Diesel Fuel OilsD3242 Test Method for Acidity in Aviation Turbine FuelD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4175 Terminology Relating to Petr
13、oleum Products,LiquidFuels,and LubricantsD4625 Test Method for Middle Distillate Fuel StorageStability at 43 C(110 F)D4806 Specification for Denatured Fuel Ethanol for Blend-ing with Gasolines for Use as Automotive Spark-IgnitionEngine FuelD6584 TestMethodforDeterminationofTotalMonoglycerides,Total
14、Diglycerides,Total Triglycerides,1This specification is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.E0 on Burner,Diesel,Non-Aviation Gas Turbine,and MarineFuels.Current edition approved May 1,2019.P
15、ublished May 2019.Originallyapproved in 2018.Last previous edition approved in 2018 as D8181 18b.DOI:10.1520/D8181-19.2For 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
16、 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 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 Tec