ASTM D7717-11(2021)
(Practice)Standard Practice for Preparing Volumetric Blends of Denatured Fuel Ethanol and Gasoline Blendstocks for Laboratory Analysis
Standard Practice for Preparing Volumetric Blends of Denatured Fuel Ethanol and Gasoline Blendstocks for Laboratory Analysis
SIGNIFICANCE AND USE
5.1 Typically, denatured fuel ethanol is added to gasoline blendstocks after production. For laboratories to test a sample that is similar to the finished fuel available in the market, it is important to provide a laboratory practice that standardizes the preparation of a blend of denatured fuel ethanol and gasoline blendstock.
5.2 The laboratory blend shall be prepared volumetrically to yield a fuel similar to that produced for consumer use.
5.3 When applicable, blends shall meet requirements of CFR 40.80, Subpart D—Reformulated Gasoline.
SCOPE
1.1 This practice covers and provides instructions on making a volumetric blend of denatured fuel ethanol with gasoline blendstocks, such as a reformulated gasoline blendstock for oxygenate blending (RBOB) or a conventional gasoline blendstock for oxygenate blending (CBOB).
1.2 This practice does not preclude the use of automated volumetric blending systems.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: D7717 − 11 (Reapproved 2021)
Standard Practice for
Preparing Volumetric Blends of Denatured Fuel Ethanol and
Gasoline Blendstocks for Laboratory Analysis
This standard is issued under the fixed designation D7717; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope hols in Gasoline by Gas Chromatography
D5501 Test Method for Determination of Ethanol and
1.1 This practice covers and provides instructions on mak-
Methanol Content in Fuels Containing Greater than 20 %
ing a volumetric blend of denatured fuel ethanol with gasoline
Ethanol by Gas Chromatography
blendstocks, such as a reformulated gasoline blendstock for
D5599 Test Method for Determination of Oxygenates in
oxygenate blending (RBOB) or a conventional gasoline blend-
Gasoline by Gas Chromatography and Oxygen Selective
stock for oxygenate blending (CBOB).
Flame Ionization Detection
1.2 This practice does not preclude the use of automated 3
2.2 Federal Standard:
volumetric blending systems.
CFR 40.80 Title 40 —Protection of Environment, Chapter
1.3 The values stated in SI units are to be regarded as
1—Environmental Protection Agency (continued), Part
standard. No other units of measurement are included in this
80—Regulation of Fuels and FuelAdditives, Subpart D—
standard.
Reformulated Gasoline
1.4 This standard does not purport to address all of the
3. Terminology
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro- 3.1 Definitions:
3.1.1 denaturants, n—materials added to ethanol to make it
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use. unsuitable for beverage use under a formula approved by a
regulatory agency to prevent the imposition of beverage
1.5 This international standard was developed in accor-
dance with internationally recognized principles on standard- alcohol tax. D4806
ization established in the Decision on Principles for the
3.1.2 denatured fuel ethanol, n—fuel ethanol made unfit for
Development of International Standards, Guides and Recom-
beverage use by the addition of denaturants under formula(s)
mendations issued by the World Trade Organization Technical
approved by the applicable regulatory agency to prevent the
Barriers to Trade (TBT) Committee.
imposition of beverage alcohol tax. D4806
3.1.3 gasoline, n—volatile mixture of liquid hydrocarbons,
2. Referenced Documents
generally containing small amounts of additives, suitable for
2.1 ASTM Standards:
use as a fuel in spark-ignition, internal combustion engines.
D4806 Specification for Denatured Fuel Ethanol for Blend-
D4814
ing with Gasolines for Use as Automotive Spark-Ignition
3.1.4 gasoline-alcohol blend, n—fuel consisting primarily
Engine Fuel
of gasoline along with a substantial amount (more than 0.35 %
D4814 Specification for Automotive Spark-Ignition Engine
by mass oxygen or more than 0.15 % by mass oxygen if
Fuel
methanol is the only oxygenate) of one or more alcohols.
D4815 Test Method for Determination of MTBE, ETBE,
D4814
TAME, DIPE, tertiary-Amyl Alcohol and C to C Alco-
1 4
3.2 Abbreviations:
3.2.1 CBOB—conventional gasoline blendstock for oxygen-
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum
ate blending.
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom-
mittee D02.04.0A on Preparation of Standard Hydrocarbon Blends.
3.2.2 RBOB—reformulated gasoline blendstock for oxygen-
Current edition approved Oct. 1, 2021. Published November 2021. Originally
ate blending.
approved in 2011. Last previous edition approved in 2017 as D7717 – 11 (2017).
DOI: 10.1520/D7717-11R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM AvailablefromU.S.GovernmentPrintingOfficeSuperintendentofDocuments,
Standards volume information, refer to the standard’s Document Summary page on 732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http://
the ASTM website. www.access.gpo.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7717 − 11 (2021)
4. Summary of Practice 7.7 Perform the following actions as efficiently as possible
to minimize vapor loss and temperature increase.
4.1 Aspecific measured volume of denatured fuel ethanol is
blended with a gasoline blendstock to achieve a final blend of
7.8 Depending on the volume of denatured ethanol needed
a predetermined percentage of denatured fuel ethanol. The as determined by Eq 1, measure the volume using the appro-
blend shall be prepared with all components and apparatus
priate pipet, graduated cylinder, or other suitable volumetric
chilled. The total volume of the blend prepared is dependent measuring device.
upon the volume needed to complete required testing.
7.9 When using a volumetric flask, add measured denatured
ethanol to the volumetric flask and bring up to volume with
5. Significance and Use
gasoline blendstock.
5.1 Typically, denatured fuel ethanol is added to gasoline
7.10 When not using a volumetric flask and depending
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.