ASTM D7920-21

Standard Test Method for Determination of Fuel Methanol (M99) and Methanol Fuel Blends (M10 to M99) by Gas Chromatography

SIGNIFICANCE AND USE
5.1 Methanol is used in blends with gasoline at levels of 70 % to 85 % by volume, as specified in Specification D5797. This test method provides a quantitative approach to measure the methanol content in methanol fuel blends, from 10 % to 99 % by volume. The usual concentration is 70 % to 85 % by volume (M70 to M85). The method is also used to analyze fuel methanol (M99) prior to blending.
SCOPE
1.1 This test method covers the determination of the methanol content, by gas chromatography, of M10 to M99 in methanol fuel blends, including fuel methanol (M99).  
1.1.1 Methanol may be determined from 10 % to 99 % by volume.  
1.2 This test method is designed to measure not only methanol in the blended gasoline but also the impurities in fuel methanol (M99) itself in the range of 5 mg/kg to 1000 mg/kg. However, not all impurities are measured nor detected by this test method.  
1.2.1 Water cannot be determined by this test method and shall be measured by a procedure such as Test Method D1364 and the result used to correct the concentrations determined by this test method.  
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

• Status: Published
• Publication Date: 31-Dec-2020
• ICS: 75.160.20 - Liquid fuels
• Technical Committee: D02 - Petroleum Products, Liquid Fuels, and Lubricants
• Drafting Committee: D02.04.0L - Gas Chromatography Methods

Relations

• Refers: ASTM D4814-20 - Standard Specification for Automotive Spark-Ignition Engine Fuel
• Effective Date: 01-Feb-2020

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: D7920 − 21
Standard Test Method for
Determination of Fuel Methanol (M99) and Methanol Fuel
1
Blends (M10 to M99) by Gas Chromatography
This standard is issued under the fixed designation D7920; 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* D1364 Test Method for Water in Volatile Solvents (Karl
Fischer Reagent Titration Method)
1.1 This test method covers the determination of the metha-
D4057 Practice for Manual Sampling of Petroleum and
nol content, by gas chromatography, of M10 to M99 in
Petroleum Products
methanol fuel blends, including fuel methanol (M99).
D4175 Terminology Relating to Petroleum Products, Liquid
1.1.1 Methanol may be determined from 10 % to 99 % by
Fuels, and Lubricants
volume.
D4307 Practice for Preparation of Liquid Blends for Use as
1.2 This test method is designed to measure not only
Analytical Standards
methanol in the blended gasoline but also the impurities in fuel
D4814 Specification for Automotive Spark-Ignition Engine
methanol (M99) itself in the range of 5 mg/kg to 1000 mg/kg.
Fuel
However, not all impurities are measured nor detected by this
D4626 Practice for Calculation of Gas Chromatographic
test method.
Response Factors
1.2.1 Water cannot be determined by this test method and
D5797 Specification for Methanol Fuel Blends (M51–M85)
shall be measured by a procedure such as Test Method D1364
forMethanol-CapableAutomotiveSpark-IgnitionEngines
and the result used to correct the concentrations determined by
D6299 Practice for Applying Statistical Quality Assurance
this test method.
and Control Charting Techniques to Evaluate Analytical
1.3 The values stated in SI units are to be regarded as Measurement System Performance
E29 Practice for Using Significant Digits in Test Data to
standard. No other units of measurement are included in this
standard. Determine Conformance with Specifications
E355 Practice for Gas Chromatography Terms and Relation-
1.4 This standard does not purport to address all of the
ships
safety concerns, if any, associated with its use. It is the
E594 Practice for Testing Flame Ionization Detectors Used
responsibility of the user of this standard to establish appro-
in Gas or Supercritical Fluid Chromatography
priate safety, health, and environmental practices and deter-
E1064 Test Method for Water in Organic Liquids by Coulo-
mine the applicability of regulatory limitations prior to use.
metric Karl Fischer Titration
1.5 This international standard was developed in accor-
E1510 Practice for Installing Fused Silica Open Tubular
dance with internationally recognized principles on standard-
Capillary Columns in Gas Chromatographs
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
3. Terminology
mendations issued by the World Trade Organization Technical
3.1 This test method makes reference to many common
Barriers to Trade (TBT) Committee.
chromatographicprocedures,terms,andrelationships.Detailed
2. Referenced Documents definitions can be found in Terminology D4175 and Practices
2
D4626, E355, and E594.
2.1 ASTM Standards:
3.2 Definitions:
3.2.1 analyte, n—a specific compound to be measured
1
This test method is under the jurisdiction of ASTM Committee D02 on
quantitatively in a mixture of compounds.
Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of
Subcommittee D02.04.0L on Gas Chromatography Methods.
3.2.2 analyticalcolumn,n—achromatographiccolumnused
Current edition approved Jan. 1, 2021. Published January 2021. Originally
to further separate a specific analyte from a mixture of
ɛ1
approved in 2015. Last previous edition approved in 2015 as D7920 – 15 . DOI:
compounds which can coelute in the primary column.
10.1520/D7920-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.2.3 analytical detector, n—a device used to quantify the
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
compounds of interest after they elute from the analytical
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. column.
*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
1

---------------------- Page: 1 ----------------------
D7920 − 21
3.2.4 fuel methanol (M99), n—methyl alcohol
...

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.
´1
Designation: D7920 − 15 D7920 − 21
Standard Test Method for
Determination of Fuel Methanol (M99) and Methanol Fuel
1
Blends (M10 to M99) by Gas Chromatography
This standard is issued under the fixed designation D7920; 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
ε NOTE—Section 16 was corrected editorially in September 2015.
1. Scope Scope*
1.1 This test method covers the determination of the methanol content, by gas chromatography, of M10 to M99 in methanol fuel
blends, including fuel methanol (M99).
1.1.1 Methanol may be determined from 10 % to 99 % by volume.
1.2 This test method is designed to measure not only methanol in the blended gasoline but also the impurities in fuel methanol
(M99) itself in the range of 5 mg/kg to 1000 mg/kg. However, not all impurities are measured nor detected by this test method.
1.2.1 Water cannot be determined by this test method and shall be measured by a procedure such as Test Method D1364 and the
result used to correct the concentrations determined by this test method.
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 safety, health, and healthenvironmental 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.
2. Referenced Documents
2
2.1 ASTM Standards:
D1364 Test Method for Water in Volatile Solvents (Karl Fischer Reagent Titration Method)
D4057 Practice for Manual Sampling of Petroleum and Petroleum Products
D4175 Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants
D4307 Practice for Preparation of Liquid Blends for Use as Analytical Standards
D4814 Specification for Automotive Spark-Ignition Engine Fuel
D4626 Practice for Calculation of Gas Chromatographic Response Factors
1
This test method is under the jurisdiction of ASTM Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants and is the direct responsibility of Subcommittee
D02.04.0L on Gas Chromatography Methods.
Current edition approved Aug. 1, 2015Jan. 1, 2021. Published September 2015January 2021. Originally approved in 2015. Last previous edition approved in 2015 as
ɛ1
D7920 – 15 . DOI: 10.1520/D7920-15E01.10.1520/D7920-21.
2
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
1

---------------------- Page: 1 ----------------------
D7920 − 21
D5797 Specification for Methanol Fuel Blends (M51–M85) for Methanol-Capable Automotive Spark-Ignition Engines
D6299 Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measure-
ment System Performance
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E355 Practice for Gas Chromatography Terms and Relationships
E594 Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography
E1064 Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration
E1510 Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
3. Terminology
3.1 This test method makes reference to many common chromatographic procedures, terms, and relationships. Detailed definitions
can be found in Terminology D4175 and Practices D4626, E355, and E594.
3.2 Definitions:
3.2.1 analyte, n—a specific compound to be measured quantitatively in a mixture of compounds.
3.2.2 analytical column, n—a chromatographic column used to further
...