ASTM D6579-11(2020)
Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon, Rosin and Terpene Resins by Size-Exclusion Chromatography

Standard No.

ASTM D6579-11(2020)

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6579-11(2020)

Scope

1.1 This practice covers the determination of apparent molecular weight (MW) averages and molecular weight distributions (MWD) for THF-soluble hydrocarbon, rosin and terpene resins by size-exclusion chromatography (SEC). This technique is not absolute; it requires calibration with standards of known molecular weight. This practice is applicable to resins containing molecular-weight components that have elution volumes falling within the elution volume range defined by polystyrene standards. NOTE 1—SEC is also known as gel permeation chromatography (GPC). 1.2 SEC systems employ low-volume liquid chromatography components and columns packed with relatively small (generally 3 to 20 µm) microporous particles. Highperformance liquid chromatography instrumentation and automated data handling systems for data acquisition and processing are also required. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are 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, 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.

ASTM D6579-11(2020) Referenced Document

• ASTM D3016 Standard Practice for Use of Liquid Exclusion Chromatography Terms and Relationships
• ASTM D6440 Standard Terminology Relating to Hydrocarbon Resins
• ASTM D804 Terminology Relating to Naval Stores, Including Tall Oil and Related Products

ASTM D6579-11(2020) history

• 2020 ASTM D6579-11(2020) Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon, Rosin and Terpene Resins by Size-Exclusion Chromatography
• 2011 ASTM D6579-11(2015) Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon, Rosin and Terpene Resins by Size-Exclusion Chromatography
• 2011 ASTM D6579-11 Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon, Rosin and Terpene Resins by Size-Exclusion Chromatography
• 2006 ASTM D6579-06 Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon and Terpene Resins by Size-Exclusion Chromatography
• 2000 ASTM D6579-00 Standard Practice for Molecular Weight Averages and Molecular Weight Distribution of Hydrocarbon and Terpene Resins by Size-Exclusion Chromatography