ASTM_D_7717_-_11.pdf

Designation:D771711Standard Practice forPreparing Volumetric Blends of Denatured Fuel Ethanol andGasoline Blendstocks for Laboratory Analysis1This standard is issued under the fixed designation D7717;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.1.Scope1.1 This practice covers and provides instructions on mak-ing a volumetric blend of denatured fuel ethanol with gasolineblendstocks,such as a reformulated gasoline blendstock foroxygenate blending(RBOB)or a conventional gasoline blend-stock for oxygenate blending(CBOB).1.2 This practice does not preclude the use of automatedvolumetric blending systems.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 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:2D4806 Specification for Denatured Fuel Ethanol for Blend-ing with Gasolines for Use as Automotive Spark-IgnitionEngine FuelD4814 Specification for Automotive Spark-Ignition EngineFuelD4815 Test Method for Determination of MTBE,ETBE,TAME,DIPE,tertiary-Amyl Alcohol and C1to C4Alco-hols in Gasoline by Gas ChromatographyD5501 Test Method for Determination of Ethanol Content ofDenatured Fuel Ethanol by Gas ChromatographyD5599 Test Method for Determination of Oxygenates inGasoline by Gas Chromatography and Oxygen SelectiveFlame Ionization Detection2.2 Federal Standard:3CFR 40.80 Title 40 Protection of Environment,Chapter1Environmental Protection Agency(continued),Part80Regulation of Fuels and FuelAdditives,Subpart DReformulated Gasoline3.Terminology3.1 Definitions:3.1.1 denaturants,nmaterials added to ethanol to make itunsuitable for beverage use under a formula approved by aregulatory agency to prevent the imposition of beveragealcohol tax.D48063.1.2 denatured fuel ethanol,nfuel ethanol made unfit forbeverage use by the addition of denaturants under formula(s)approved by the applicable regulatory agency to prevent theimposition of beverage alcohol tax.D48063.1.3 gasoline,nvolatile mixture of liquid hydrocarbons,generally containing small amounts of additives,suitable foruse as a fuel in spark-ignition,internal combustion engines.D48143.1.4 gasoline-alcohol blend,nfuel consisting primarilyof gasoline along with a substantial amount(more than 0.35mass%oxygen or more than 0.15 mass%oxygen if methanolis the only oxygenate)of one or more alcohols.D48143.2 Abbreviations:3.2.1 CBOBconventional gasoline blendstock for oxygen-ate blending.3.2.2 RBOBreformulated gasoline blendstock for oxygen-ate blending.4.Summary of Practice4.1 Aspecific measured volume of denatured fuel ethanol isblended with a gasoline blendstock to achieve a final blend ofa predetermined percentage of denatured fuel ethanol.Theblend shall be prepared with all components and apparatuschilled.The total volume of the blend prepared is dependentupon the volume needed to complete required testing.1This practice is under the jurisdiction of ASTM Committee D02 on PetroleumProducts and Lubricants and is the direct responsibility of Subcommittee D02.04.0Aon Preparation of Standard Hydrocarbon Blends.Current edition approved June 1,2011.Published August 2011.DOI:10.1520/D771711.2For 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.3Available from U.S.Government Printing Office Superintendent of Documents,732 N.Capitol St.,NW,Mail Stop:SDE,Washington,DC 20401,http:/www.access.gpo.gov.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.Significance and Use5.1 Typically,denatured fuel ethanol is added to gasolineblendstocks after production.For laboratories to test a samplethat is similar to the finished fuel available in the market,it isimportant to provide a laboratory practice that standardizes thepreparation of a blend of denatured fuel ethanol and gasolineblendstock.5.2 The laboratory blend shall be prepared volumetrically toyield a fuel similar to that produced for consumer use.5.3 When applicable,blends shall meet requirements ofCFR 40.80,Subpart DReformulated Gasoline.6.Apparatus6.1 Class A glassware is recommended.6.2 Container used to mix blend shall have an appropriateclosure so as to prevent loss of light ends.7.Procedure7.1 Chill apparatus(see Note 1),samples,denatured fuelethanol,to be used in blending to 0 to 4C.NOTE1Glassware should be