ASTM D5188-16
Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber and Piston Based Method)

Standard No.

ASTM D5188-16

Release Date

2016

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM D5188-23

Latest

ASTM D5188-23

Scope

5.1 The tendency of a fuel to vaporize in automotive engine fuel systems is indicated by the vapor-liquid ratio of the fuel.

5.2 Automotive fuel specifications generally include T _{(V/L8201;=8201;20)} limits to ensure products of suitable volatility performance. For high ambient temperatures, a fuel with a high value of T_{(V/L8201;=8201;20)}, indicating a fuel with a low tendency to vaporize, is generally specified; conversely for low ambient temperatures, a fuel with a low value of T_{(V/L8201;=8201;20)} is specified.

1.1 This test method covers the determination of the temperature at which the vapor formed from a selected volume of volatile petroleum product saturated with air at 08201;°C to 18201;°C (328201;°F to 348201;°F) produces a pressure of 101.38201;kPa (one atmosphere) against vacuum. This test method is applicable to samples for which the determined temperature is between 368201;°C and 808201;°C (978201;°F and 1768201;°F) and the vapor-liquid ratio is between 8 to 1 and 75 to 1.

Note 1: When the vapor-liquid ratio is 20:1, the result is intended to be comparable to the results determined by Test Method D2533.

Note 2: This test method may also be applicable at pressures other than one atmosphere, but the stated precision may not apply.

1.2 This test method is applicable to both gasoline and gasoline-oxygenate blends.

1.2.1 Some gasoline-oxygenate blends may show a haze when cooled to 08201;°C to 18201;°C. If a haze is observed in 12.5, it shall be indicated in the reporting of results. The precision and bias statements for hazy samples have not been determined (see Note 12).

1.3 The values stated in SI units are to be regarded as standard.

1.3.1 Exception—The values given in parentheses are provided for information only.

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 and health practices and determine ......

ASTM D5188-16 Referenced Document

• ASTM D2533 Standard Test Method for Vapor-Liquid Ratio of Spark-Ignition Engine Fuels
• ASTM D2892 Standard Test Method for Distillation of Crude Petroleum (15-Theoretical Plate Column)
• ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
• ASTM D6299 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance
• ASTM D6708 Standard Practice for Statistical Assessment and Improvement of Expected Agreement Between Two Test Methods that Purport to Measure the Same Property of a Material

ASTM D5188-16 history

• 2023 ASTM D5188-23 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber and Piston Based Method)
• 2016 ASTM D5188-16 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber and Piston Based Method)
• 2014 ASTM D5188-14 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels 40;Evacuated Chamber and Piston Based Method41;
• 2013 ASTM D5188-13 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 2010 ASTM D5188-10a Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 2010 ASTM D5188-10 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 2009 ASTM D5188-09 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 2004 ASTM D5188-04a Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 2004 ASTM D5188-04 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
• 1999 ASTM D5188-99 Standard Test Method for Vapor-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)