ASTM D1631 is the standard test method for measuring water in phenol and related materials by the Karl Fischer reagent method. It provides a recognized approach for determining moisture content where low water levels can affect product quality, handling, or downstream use. By using a standardized testing framework, this ASTM standard helps support consistent results across laboratories and production settings. ASTM D1631 is especially useful when reliable water content data is needed for technical review, specification checks, or quality control.

What is ASTM D1631?

ASTM D1631 defines a test method for determining water in phenol and related materials using Karl Fischer reagent. The standard is focused on analytical measurement rather than product formulation, making it relevant wherever moisture content must be checked with a controlled laboratory procedure. As an ASTM standard, it gives users a common technical reference for how the test is performed and interpreted. This helps support repeatable testing and clearer communication between buyers, sellers, and quality teams.

Where is ASTM D1631 used?

This standard is commonly used in laboratory and quality control workflows involving phenol and similar materials. It may be applied during incoming inspection, process monitoring, release testing, or material evaluation when moisture content needs to be known. Because the method is based on Karl Fischer reagent analysis, it is typically suited to analytical labs and industrial testing environments that handle chemical materials and require dependable water determination. ASTM D1631 supports those measurements in a practical, standardized way.

Why is ASTM D1631 important?

ASTM D1631 matters because water content can influence the performance, stability, and acceptability of phenol and related materials. A standardized test method helps reduce variation between laboratories and makes results easier to compare for procurement, compliance, and quality control purposes. It also supports more confident material evaluation by giving stakeholders a common basis for testing. For organizations that rely on accurate moisture data, this ASTM standard can help reduce uncertainty and improve consistency.

• Karl Fischer reagent water determination
• Phenol and related materials
• Laboratory and quality control testing
• Moisture content verification
• Consistent analytical reporting