ASTM D7795-15(2022)e1
Standard Test Method for Acidity in Ethanol and Ethanol Blends by Titration

Standard No.

ASTM D7795-15(2022)e1

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D7795-15(2022)e1

Scope

1.1 This test method covers the determination of acidity as acetic acid (see Specification D4806) in commonly available grades of denatured ethanol, and ethanol blends with gasoline ranging from E95 to E30. This test method is used for determining low levels of acidity, below 200 mg ⁄kg (ppm mass), with the exclusion of carbon dioxide. 1.1.1 Procedure A—Developed specifically for measurement of acidity by potentiometric titration. This is the referee method. 1.1.2 Procedure B—Developed specifically for measurement of acidity by color end point titration. 1.2 The ethanol and ethanol blends may be analyzed directly by this test method without any sample preparation. 1.3 Review the current and appropriate Material Safety Data Sheets (MSDS) for detailed information concerning toxicity, first aid procedures, and safety precautions and proper personal protective equipments. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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. Some specific hazards statements are given in Section 7 on Hazards. 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 D7795-15(2022)e1 Referenced Document

• ASTM D1193 Standard Specification for Reagent Water
• ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants*， 2023-07-01 Update
• ASTM D4806 Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel
• ASTM D6299 Standard Practice for Applying Statistical Quality Assurance and Control Charting Techniques to Evaluate Analytical Measurement System Performance*， 2023-07-01 Update
• 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*， 2024-03-01 Update
• ASTM D770 Standard Specification for Isopropyl Alcohol
• ASTM E200 Standard Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis

ASTM D7795-15(2022)e1 history

• 2022 ASTM D7795-15(2022)e1 Standard Test Method for Acidity in Ethanol and Ethanol Blends by Titration
• 2015 ASTM D7795-15 Standard Test Method for Acidity in Ethanol and Ethanol Blends by Titration
• 2012 ASTM D7795-12 Standard Test Method for Acidity in Ethanol and Ethanol Blends by Titration