ASTM D2700-18a
Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

Standard No.

ASTM D2700-18a

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D2700-19

Latest

ASTM D2700-24

Scope

1.1 This laboratory test method covers the quantitative determination of the knock rating of liquid spark-ignition engine fuel in terms of Motor octane number, including fuels that contain up to 25 % v/v of ethanol. However, this test method may not be applicable to fuel and fuel components that are primarily oxygenates.2 The sample fuel is tested in a standardized single cylinder, four-stroke cycle, variable compression ratio, carbureted, CFR engine run in accordance with a defined set of operating conditions. The octane number scale is defined by the volumetric composition of primary reference fuel blends. The sample fuel knock intensity is compared to that of one or more primary reference fuel blends. The octane number of the primary reference fuel blend that matches the knock intensity of the sample fuel establishes the Motor octane number. 1.2 The octane number scale covers the range from 0 to 120 octane number, but this test method has a working range from 40 to 120 octane number. Typical commercial fuels produced for automotive spark-ignition engines rate in the 80 to 90 Motor octane number range. Typical commercial fuels produced for aviation spark-ignition engines rate in the 98 to 102 Motor octane number range. Testing of gasoline blend stocks or other process stream materials can produce ratings at various levels throughout the Motor octane number range. 1.3 The values of operating conditions are stated in SI units and are considered standard. The values in parentheses are the historical inch-pounds units. The standardized CFR engine measurements continue to be in inch-pound units only because of the extensive and expensive tooling that has been created for this equipment. 1.4 For purposes of determining conformance with all specified limits in this standard, an observed value or a calculated value shall be rounded “to the nearest unit” in the last right-hand digit used in expressing the specified limit, in accordance with the rounding method of Practice E29. 1.5 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. For more specific hazard statements, see Section 8, 14.4.1, 15.5.1, 16.6.1, Annex A1, A2.2.3.1, A2.2.3.3(6) and (9), A2.3.5, X3.3.7, X4.2.3.1, X4.3.4.1, X4.3.9.3, X4.3.12.4, and X4.5.1.8. 1.6 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.

ASTM D2700-18a Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D2268 Standard Test Method for Analysis of High-Purity n-Heptane and Isooctane by Capillary Gas Chromatography
• ASTM D2699 Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel
• ASTM D2885 Standard Test Method for Research and Motor Method Octane Ratings Using On-Line Analyzers
• ASTM D3703 Standard Test Method for Peroxide Number of Aviation Turbine Fuels
• ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants*， 2023-07-01 Update
• ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
• ASTM D4814 Standard Specification for Automotive Spark-Ignition Engine Fuel
• ASTM D5842 Standard Practice for Sampling and Handling of Fuels for Volatility Measurement
• ASTM D6299 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance*， 2023-07-01 Update
• ASTM D6304 Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration*， 2020-12-01 Update
• ASTM D7504 Standard Test Method for Trace Impurities in Monocyclic Aromatic Hydrocarbons by Gas Chromatography and Effective Carbon Number*， 2023-05-15 Update
• ASTM E1064 Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration*， 2024-01-01 Update
• ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E344 Terminology Relating to Thermometry and Hydrometry*， 2023-12-01 Update
• ASTM E456 Standard Terminology for Relating to Quality and Statistics
• ASTM E542 Standard Practice for Gravimetric Calibration of Laboratory Volumetric Instruments*， 2022-01-01 Update

ASTM D2700-18a history

• 2024 ASTM D2700-24 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2024 ASTM D2700-23b Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2023 ASTM D2700-23a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2023 ASTM D2700-23 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2022 ASTM D2700-22b Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2022 ASTM D2700-22a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2022 ASTM D2700-22 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2021 ASTM D2700-21 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2019 ASTM D2700-19e1 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2019 ASTM D2700-19 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2018 ASTM D2700-18a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2018 ASTM D2700-18 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2017 ASTM D2700-17a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2017 ASTM D2700-17 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2016 ASTM D2700-16a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2016 ASTM D2700-16 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2014 ASTM D2700-14 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2013 ASTM D2700-13b Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2013 ASTM D2700-13a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2013 ASTM D2700-13 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2012 ASTM D2700-12a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2012 ASTM D2700-12 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2011 ASTM D2700-11e1 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2011 ASTM D2700-11 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2010 ASTM D2700-10 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2009 ASTM D2700-09 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2008 ASTM D2700-08 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2007 ASTM D2700-07b Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2007 ASTM D2700-07a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2007 ASTM D2700-07 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2006 ASTM D2700-06 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2004 ASTM D2700-04a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2004 ASTM D2700-04e1 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2004 ASTM D2700-04 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2003 ASTM D2700-03b Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2003 ASTM D2700-03a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2003 ASTM D2700-03 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2002 ASTM D2700-02 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2001 ASTM D2700-01a Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 2001 ASTM D2700-01 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 1999 ASTM D2700-99 Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel
• 1992 ASTM D2700-92 Standard Test Method for Knock Characteristics of Motor and Aviation Fuels by the Motor Method