ASTM D7618-13(2017)

Standard Specification for Ethyl Tertiary-Butyl Ether (ETBE) for Blending with Aviation Spark-Ignition Engine Fuel

SCOPE
1.1 This specification covers requirements for fuel grade ethyl tertiary-butyl ether (ETBE) that may be used for blending with fuels for aviation spark-ignition engines where permissible. Other ETBE grades available in the marketplace that do not comply with the requirements of this specification, are not suitable for blending with aviation fuels.  
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.  
1.3 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.  
1.4 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

• Status: Historical
• Publication Date: 31-May-2017
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.J0.04 - Additives and Electrical Properties

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:D7618 −13 (Reapproved 2017) An American National Standard
Standard Specification for
Ethyl Tertiary-Butyl Ether (ETBE) for Blending with Aviation
Spark-Ignition Engine Fuel
This standard is issued under the fixed designation D7618; 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 ucts by Hydrometer Method
D4052 Test Method for Density, Relative Density, and API
1.1 This specification covers requirements for fuel grade
Gravity of Liquids by Digital Density Meter
ethyltertiary-butylether(ETBE)thatmaybeusedforblending
D4057 Practice for Manual Sampling of Petroleum and
with fuels for aviation spark-ignition engines where permis-
Petroleum Products
sible. Other ETBE grades available in the marketplace that do
D4171 Specification for Fuel System Icing Inhibitors
not comply with the requirements of this specification, are not
D4176 Test Method for FreeWater and Particulate Contami-
suitable for blending with aviation fuels.
nation in Distillate Fuels (Visual Inspection Procedures)
1.2 The values stated in SI units are to be regarded as
D4177 Practice for Automatic Sampling of Petroleum and
standard. No other units of measurement are included in this
Petroleum Products
standard.
D5854 Practice for Mixing and Handling of Liquid Samples
1.3 This standard does not purport to address all of the
of Petroleum and Petroleum Products
safety concerns, if any, associated with its use. It is the
D7796 Test Method for Analysis of Ethyl tert-Butyl Ether
responsibility of the user of this standard to establish appro-
(ETBE) by Gas Chromatography
priate safety and health practices and determine the applica-
E203 Test Method for Water Using Volumetric Karl Fischer
bility of regulatory limitations prior to use.
Titration
1.4 This international standard was developed in accor-
E300 Practice for Sampling Industrial Chemicals
dance with internationally recognized principles on standard-
E1064 Test Method for Water in Organic Liquids by Coulo-
ization established in the Decision on Principles for the
metric Karl Fischer Titration
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
3. Terminology
3.1 Definitions:
2. Referenced Documents
3.1.1 ethanol, n—chemical compound C H OH.
2 5
2.1 ASTM Standards:
3.1.2 methanol, n—chemical compound CH OH.
D130 Test Method for Corrosiveness to Copper from Petro-
leum Products by Copper Strip Test
3.1.3 ethyl tertiary-butyl ether (ETBE), n—chemical com-
D156 Test Method for Saybolt Color of Petroleum Products
pound CH CH OC(CH ) .
3 2 3 3
(Saybolt Chromometer Method)
D381 Test Method for Gum Content in Fuels by Jet Evapo- 3.1.4 tertiary-butyl alcohol (TBA), n—chemical compound
ration (CH ) COH.
3 3
D1298 Test Method for Density, Relative Density, or API
3.1.5 methyl tertiary-butyl ether (MTBE), n—chemicalcom-
Gravity of Crude Petroleum and Liquid Petroleum Prod-
pound CH OC(CH ) .
3 3 3
3.1.6 oxygenate, n—oxygen-containing ashless, organic
This specification is under the jurisdiction of ASTM Committee D02 on
compound, such as an alcohol or ether, which may be used as
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
a fuel or fuel supplement.
Subcommittee D02.J0.04 on Additives and Electrical Properties.
CurrenteditionapprovedJune1,2017.PublishedJuly2017.Originallyapproved
in 2010. Last previous edition approved in 2013 as D7618 – 13. DOI: 10.1520/
4. Detailed Requirements
D7618-13R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
4.1 ETBE that may be used for blending with fuels for
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
aviation spark-ignition engines shall conform to the require-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. ments of Table 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7618−13 (2017)
TABLE 1 Detailed Requirements
A
Property Limits ASTM Test Method
Ethyl tertiary-butyl ether, % by mass, min. 95.0 D7796
Ethanol, % by mass, max. 1.5 D7796
Methanol, % by mass, max. 0.3 D7796
Tertiary-butyl alcohol, % by mass, max 1.5 D7796
Methyl tertiary-butyl ether, % by mass, max. 2.0 D7796
B
C -C Oxygenates, % by mass, max. 1.5 D7796
2 4
C
C -C Hydrocarbons, % by mass, max. 1.5 D7796
4 6
D
C -C Hydrocarbons, % by mass, max. 2.0 D7796
8 10
Unidentified hydrocarbons, % by mass, max. 1.0 D7796
Water, % by mass, max. 0.1 E1064 or E203
Copper strip corrosion, max. 1 D130
Appearance Clear and bright D4176
Color, Saybolt, min. + 16 D156
Existent gum content, mg/100 mL, max. 5.0 D381
Density at 15 °C, kg/L 0.735 to 0.755 D1298 or D4052
A
The test methods indicated in this table are referred to in Section 7.
B
Oxygenates, excluding alcohols, of combined concentrations of diethyl and
dimethyl ethers, acetone and methyl ethyl ketone.
C
Combined concentrations of isopentane, pentane, and hexane paraffins, and
isobutylene olefin.
D
Combined concentrations of C isobutylene dimers mainly derived from the
dimerization of C -C compounds, and isooctane.
4 5
5. Workmanship and the lead in the solder can contaminate the samples. Plastic
containers should be avoided.
5.1 The ETBE shall be visually free of undissolved water,
sediment, and suspended matter. It shall be clear and bright at 6.4 SampleSize—Aminimumofabout2 Lisrecommended.
the ambient temperature or 21 °C, whichever is lower.
7. Test Methods
5.2 The specification defines only a basic purity for this
7.1 The scopes of some of the test methods specified below
product. The product shall be free of any adulterant or
do not include ETBE, thus the precision of those test methods
contaminantthatcouldrenderthematerialunacceptableforthe
when testing ETBE can differ from the reported precisions.
intended application.
7.2 ETBE, mass %—Test Method D7796.
6. Sampling, Containers, and Sample Handling
7.3 Ethanol, mass %—Test Method D7796.
6.1 The user is strongly advised to review all intended test
7.4 Methanol, mass %—Test Method D7796.
methods prior to sampling in order to understand the impor-
tance and effects of sampling technique, proper containers, and 7.5 Water, mass %—Test Method E1064 or E203.
special handling required for each test method.
7.6 Copper Strip Corrosion—Test Method D130,2hat
6.2 Correct sampling procedures are critical to obtain a 100 °C.
sample representative of the lot intended to be tested. Use of
7.7 Appearance—Test Method D4176, Procedure 1.
appropriate procedures in Practice D4057 or Practice E300 for
7.8 Color, Saybolt—Test Method D156.
manual method sampling and in Practice D4177 for automatic
method sampling as applicable. 7.9 Existent Gum Content—Test Method D381, air-jet ap-
paratus.
6.3 The correct sample volume and appropriate container
selection are important decisions that can impact test results. 7.10 Density a
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: D7618 − 13 D7618 − 13 (Reapproved 2017) An American National Standard
Standard Specification for
Ethyl Tertiary-Butyl Ether (ETBE) for Blending with Aviation
Spark-Ignition Engine Fuel
This standard is issued under the fixed designation D7618; 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*Scope
1.1 This specification covers requirements for fuel grade ethyl tertiary-butyl ether (ETBE) that may be used for blending with
fuels for aviation spark-ignition engines where permissible. Other ETBE grades available in the marketplace that do not comply
with the requirements of this specification, are not suitable for blending with aviation fuels.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
D156 Test Method for Saybolt Color of Petroleum Products (Saybolt Chromometer Method)
D381 Test Method for Gum Content in Fuels by Jet Evaporation
D1298 Test Method for Density, Relative Density, or API Gravity of Crude Petroleum and Liquid Petroleum Products by
Hydrometer Method
D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4171 Specification for Fuel System Icing Inhibitors
D4176 Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures)
D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products
D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
D7796 Test Method for Analysis of Ethyl tert-Butyl Ether (ETBE) by Gas Chromatography
E203 Test Method for Water Using Volumetric Karl Fischer Titration
E300 Practice for Sampling Industrial Chemicals
E1064 Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration
3. Terminology
3.1 Definitions:
3.1.1 ethanol, n—chemical compound C H OH.
2 5
3.1.2 methanol, n—chemical compound CH OH.
3.1.3 ethyl tertiary-butyl ether (ETBE), n—chemical compound CH CH OC(CH ) .
3 2 3 3
This specification is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.J0.04 on Additives and Electrical Properties.
Current edition approved May 1, 2013June 1, 2017. Published August 2013July 2017. Originally approved in 2010. Last previous edition approved in 20102013 as
D7618 – 10.D7618 – 13. DOI: 10.1520/D7618-13.10.1520/D7618-13R17.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7618 − 13 (2017)
3.1.4 tertiary-butyl alcohol (TBA), n—chemical compound (CH ) COH.
3 3
3.1.5 methyl tertiary-butyl ether (MTBE), n—chemical compound CH OC(CH ) .
3 3 3
3.1.6 oxygenate, n—oxygen-containing ashless, organic compound, such as an alcohol or ether, which may be used as a fuel
or fuel supplement.
4. Detailed Requirements
4.1 ETBE that may be used for blending with fuels for aviation spark-ignition engines shall conform to the requirements of
Table 1.
5. Workmanship
5.1 The ETBE shall be visually free of undissolved water, sediment, and suspended matter. It shall be clear and bright at the
ambient temperature or 21°C,21 °C, whichever is lower.
5.2 The specification defines only a basic purity for this product. The product shall be free of any adulterant or contaminant that
could render the material unacceptable for the intended application.
6. Sampling, Containers, and Sample Handling
6.1 The user is strongly advised to review all intended test methods prior to sampling in order to understand the importance and
effects of sampling technique, proper containers, and special handling required for each test method.
6.2 Correct sampling procedures are critical to obtain a sample representative of the lot intended to be tested. Use of appropriate
procedures in Practice D4057 or Practice E300 for manual method sampling and in Practice D4177 for automatic method sampling
as applicable.
6.3 The correct sample volume and appropriate container selection are important decisions that can impact test results. Refer
to Practice D5854 for procedures on container selection and sample mixing and handling. Where practical, ETBE should be
sampled in glass containers. If samples must be collected in metal containers, do not use soldered metal containers. This is because
the soldering flux in the containers and the lead in the solder can contaminate the samples. Plastic containers should be avoided.
6.4 Sample Size—A minimum of about 2 L 2 L is recommended.
TABLE 1 Detailed Requirements
A
Property Limits ASTM Test Method
Ethyl tertiary-butyl ether, mass %, min. 95.0 D7796
Ethyl tertiary-butyl ether, % by mass, min. 95.0 D7796
Ethanol, mass %, max. 1.5 D7796
Ethanol, % by mass, max. 1.5 D7796
Methanol, mass%, max. 0.3 D7796
Methanol, % by mass, max. 0.3 D7796
Tertiary-butyl alcohol, mass%, max 1.5 D7796
Tertiary-butyl alcohol, % by mass, max 1.5 D7796
Methyl tertiary-butyl ether, mass%, max. 2.0 D7796
Methyl tertiary-butyl ether, % by mass, max. 2.0 D7796
B
C -C Oxygenates, mass%, max. 1.5 D7796
2 4
B
C -C Oxygenates, % by mass, max. 1.5 D7796
2 4
C
C -C Hydrocarbons, mass%, max. 1.5 D7796
4 6
C
C -C Hydrocarbons, % by mass, max. 1.5 D7796
4 6
D
C -C Hydrocarbons, mass%, max. 2.0 D7796
8 10
D
C -C Hydrocarbons, % by mass, max. 2.0 D7796
8 10
Unidentified hydrocarbons, mass%, max. 1.0 D7796
Unidentified hydrocarbons, % by mass, max. 1.0 D7796
Water, mass %, max. 0.1 E1064 or E203
Water, % by mass, max. 0.1 E1064 or E203
Copper strip corrosion, max. 1 D130
Appearance Clear and bright D4176
Color, Saybolt, min. + 16 D156
Existent gum content, mg/100 mL, max. 5.0 D381
Density at 15°C, kg/L 0.735 to 0.755 D1298 or D4052
Density at 15 °C, kg/L 0.735 to 0.755 D1298 or D4052
A
The test methods indicated in this table are referred to in Section 7.
B
Oxygenates, excluding alcohols, of combined concentrations of diethyl and
dimethyl ethers, acetone and methyl ethyl ketone.
C
Combined concentrations of isopentane, pentane, and hexane paraffins, and
isobutylene olefin.
D
Combined concentrations of C isobutylene dimers mainly derived from the
dimerization of C -C compounds, and iso-octane.isooctane.
4 5
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