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ASTM D7794-12

(Practice)

Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines

Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines

SCOPE
1.1 This practice applies to the blending of automotive spark-ignition engine fuels with ethanol concentrations greater than those suitable for conventional-fuel vehicles and less than the minimum ethanol content specification limits of Specification D5798.
1.2 These mid-level ethanol fuel blends are only suitable for use in ground flexible-fuel vehicles equipped with sparkignition engines. Flexible-fuel vehicles are designed to operate on gasoline or gasoline-ethanol blends that meet the requirements of Specification D4814, ethanol fuel blends that meet the requirements of Specification D5798, or any combination of these. In the United States, these vehicles are certified by the U.S. EPA as emissions compliant with these types of fuels.
1.3 The mid-level ethanol fuel blend shall be blended from either:
1.3.1 Denatured fuel ethanol conforming to the requirements of Specification D4806 with a reduced limit on inorganic chloride content that will ensure no more than 1 mg/kg inorganic chloride in the finished fuel and from spark-ignition engine fuel conforming to Specification D4814 (often at a distribution terminal or bulk plant), or
1.3.2 Ethanol fuel blends conforming to Specification D5798 and from spark-ignition engine fuel conforming to Specification D4814 (often at a retail site).
1.4 This practice describes the required procedures for blending various mid-level ethanol fuel blends for flexible-fuel vehicles at the bulk distribution point or retail/commercial delivery site. These requirements may be applied at other points in the production and distribution system when provided by agreement between the purchaser and the supplier.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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 and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
14-Apr-2012
ICS
71.080.60 - Alcohols. Ethers
75.160.20 - Liquid fuels
Technical Committee
D02 - Petroleum Products, Liquid Fuels, and Lubricants
Drafting Committee
D02.A0.02 - Oxygenated Fuels and Components
Current Stage
Ref Project

Relations

Replaced By
ASTM D7794-14 - Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines
Effective Date
01-Dec-2014
Referred By
ASTM D7923-19 - Standard Test Method for Water in Ethanol and Hydrocarbon Blends by Karl Fischer Titration
Effective Date
15-Apr-2012
Referred By
ASTM D7794-21 - Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines
Effective Date
15-Apr-2012

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ASTM D7794-12 - Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition EnginesASTM D7794-12 - Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines
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ASTM D7794-12 - Standard Practice for Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel Vehicles with Automotive Spark-Ignition Engines
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D7794 − 12
StandardPractice for
Blending Mid-Level Ethanol Fuel Blends for Flexible-Fuel
1
Vehicles with Automotive Spark-Ignition Engines
This standard is issued under the fixed designation D7794; 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 1.6 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This practice applies to the blending of automotive
responsibility of the user of this standard to establish appro-
spark-ignition engine fuels with ethanol concentrations greater
priate safety and health practices and determine the applica-
than those suitable for conventional-fuel vehicles and less than
bility of regulatory limitations prior to use.
the minimum ethanol content specification limits of Specifica-
tion D5798.
2. Referenced Documents
2
1.2 Thesemid-levelethanolfuelblendsareonlysuitablefor
2.1 ASTM Standards:
use in ground flexible-fuel vehicles equipped with spark-
D4057 Practice for Manual Sampling of Petroleum and
ignition engines. Flexible-fuel vehicles are designed to operate
Petroleum Products
on gasoline or gasoline-ethanol blends that meet the require-
D4175 Terminology Relating to Petroleum, Petroleum
mentsofSpecificationD4814,ethanolfuelblendsthatmeetthe
Products, and Lubricants
requirements of Specification D5798, or any combination of
D4177 Practice for Automatic Sampling of Petroleum and
these. In the United States, these vehicles are certified by the
Petroleum Products
U.S. EPA as emissions compliant with these types of fuels.
D4806 Specification for Denatured Fuel Ethanol for Blend-
ing with Gasolines for Use as Automotive Spark-Ignition
1.3 The mid-level ethanol fuel blend shall be blended from
Engine Fuel
either:
D4814 Specification for Automotive Spark-Ignition Engine
1.3.1 Denatured fuel ethanol conforming to the require-
Fuel
mentsofSpecificationD4806withareducedlimitoninorganic
D4815 Test Method for Determination of MTBE, ETBE,
chloride content that will ensure no more than 1 mg/kg
TAME, DIPE, tertiary-Amyl Alcohol and C to C Alco-
1 4
inorganic chloride in the finished fuel and from spark-ignition
hols in Gasoline by Gas Chromatography
engine fuel conforming to Specification D4814 (often at a
D5191 Test Method for Vapor Pressure of Petroleum Prod-
distribution terminal or bulk plant), or
ucts (Mini Method)
1.3.2 Ethanol fuel blends conforming to Specification
D5501 Test Method for Determination of Ethanol and
D5798 and from spark-ignition engine fuel conforming to
Methanol Content in Fuels Containing Greater than 20%
Specification D4814 (often at a retail site).
Ethanol by Gas Chromatography
1.4 This practice describes the required procedures for
D5599 Test Method for Determination of Oxygenates in
blending various mid-level ethanol fuel blends for flexible-fuel
Gasoline by Gas Chromatography and Oxygen Selective
vehicles at the bulk distribution point or retail/commercial
Flame Ionization Detection
delivery site. These requirements may be applied at other
D5798 Specification for Ethanol Fuel Blends for Flexible-
pointsintheproductionanddistributionsystemwhenprovided
Fuel Automotive Spark-Ignition Engines
by agreement between the purchaser and the supplier.
D5842 Practice for Sampling and Handling of Fuels for
Volatility Measurement
1.5 The values stated in SI units are to be regarded as
D5854 Practice for Mixing and Handling of Liquid Samples
standard. No other units of measurement are included in this
of Petroleum and Petroleum Products
standard.
D6469 GuideforMicrobialContaminationinFuelsandFuel
Systems
1
This practice is under the jurisdiction of ASTM Committee D02 on Petroleum
2
Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcom- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
mittee D02.A0.02 on Oxygenated Fuels and Components. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved April 15, 2012. Published May 2012. DOI: 10.1520/ Standards volumeinformation,refertothestandard’sDocumentSummarypageon
D7794–12. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D7794 − 12
D7319 Test Method for Determination of Existent and Po- applicable regulatory jurisdictions, that can volumetrically
tential Sulfate and Inorganic Chloride in Fuel Ethanol and combine two different base products into newly formed
Butanol by Direct Injection Suppressed Ion Chromatog- ble
...

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