ASTM E1064-24 PDF

Overview

ASTM E1064-24: Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration is an international standard developed by ASTM International. This method outlines a procedure for determining water content from 0% to 2.0% by mass in most liquid organic chemicals using coulometric Karl Fischer titration. The technique is particularly effective for detecting low concentrations of water that may not be suitable for traditional volumetric Karl Fischer methods. This standard is not applicable to liquefied gases such as LPG, butane, propane, or LNG.

Implementing ASTM E1064-24 enables precise water analysis in organic liquids, supporting quality control, product validation, and regulatory compliance in industries where dryness is critical.

Key Topics

• Coulometric Karl Fischer Titration: This standard method utilizes electrolytically generated iodine to react stoichiometrically with the water present in the sample. The process is automated, efficient, and especially suitable for low water levels.
• Scope of Application: Suitable for most liquid organic chemicals, but specifically excludes liquefied gases due to sample handling and measurement limitations.
• Precision and Limitations: Provides optimal precision and accuracy for samples with water concentrations up to 2.0% by mass. The technique may not be suitable for higher concentrations due to diminished accuracy in small sample measurements.
• Safety and Quality Assurance: Users must consult relevant Safety Data Sheets (SDS) and adhere to laboratory safety protocols. The laboratory should maintain robust quality control systems for reliable and reproducible results.

Applications

ASTM E1064-24 is widely utilized across various chemical and industrial sectors for routine water determination in organic solvents, specialty chemicals, and raw materials. Applications include:

• Quality Control of Raw Materials: Ensuring organic liquids meet moisture specifications is crucial for product consistency and downstream processing.
• Research and Development: Supports formulation studies, stability testing, and analytical research by accurately quantifying trace water.
• Production and Manufacturing: Facilitates ongoing in-process water determination in chemical production environments.
• Regulatory Compliance: Provides documented, standardized procedures that support compliance with national and international regulations regarding product quality.

By specifying pyridine-free reagents, the latest revision enhances laboratory safety, reduces toxicity, and aligns with modern instrument manufacturers' recommendations.

Related Standards

• ASTM D1193: Specification for Reagent Water - Ensures water used in analytical work meets required purity criteria.
• ASTM D4672: Standard Test Method for Water Content of Polyols - Employs Karl Fischer titration in polyurethane industry applications.
• ASTM D6809: Guide for Quality Control of Aromatic Hydrocarbons - Offers procedures supporting quality control and assurance for aromatic chemicals.
• ASTM E203: Standard Test Method for Water Using Volumetric Karl Fischer Titration - Defines the traditional volumetric determination approach.

These related standards enhance laboratory practice by providing complementary methods and guidelines for water determination, quality assurance, and statistical analysis in chemical testing.

Keywords: coulometric Karl Fischer, water determination, organic liquids, ASTM E1064-24, pyridine-free, chemical analysis, quality control, laboratory standard, moisture analysis, SI units compliance.