ASTM D7398

ASTM D7398 is the standard test method for determining the boiling range distribution of fatty acid methyl esters (FAME) from 100 °C to 615 °C by gas chromatography. It provides a defined approach for evaluating how FAME components are distributed across the boiling range, which is important for product characterization and quality-related decisions. ASTM D7398 is especially useful when consistent, comparable test results are needed for materials that fall within this temperature range.

ASTM D7398 standard overview

This ASTM standard focuses on a gas chromatographic test method used to measure boiling range distribution in fatty acid methyl esters. The title indicates a method centered on separation and distribution analysis rather than general composition alone, making it relevant for technical evaluation of FAME materials. As a standardized method, it supports repeatable testing practices and helps users compare results across laboratories, batches, and suppliers with greater confidence.

Where is ASTM D7398 used?

ASTM D7398 is commonly used in laboratory and quality control environments that handle fatty acid methyl esters and related fuel or blend materials. It is relevant anywhere boiling range distribution data may be needed for material assessment, product verification, or specification compliance. The method is typically applied using gas chromatography, so it fits workflows involving analytical testing equipment and standardized laboratory procedures for FAME characterization.

Practical importance of ASTM D7398

In practice, this standard helps support consistent testing and clearer product evaluation for FAME materials. It can be useful for procurement checks, specification review, and internal quality control where boiling range distribution data informs acceptance decisions. ASTM D7398 also helps reduce ambiguity by defining a common test approach, which can improve comparability between different test results and lower the risk of inconsistent material assessment.

• Gas chromatographic test method
• Boiling range distribution analysis
• FAME materials from 100 °C to 615 °C
• Quality control and compliance support
• Standardized laboratory evaluation