ASTM D2106-07(2022) PDF

Overview

ASTM D2106-07(2022) - Standard Test Methods for Determination of Amine Acid Acceptance (Alkalinity) of Halogenated Organic Solvents provides laboratories and quality control professionals with detailed procedures to determine the acid acceptance, or alkalinity, of halogenated organic solvents due to the presence of amines or other bases. This standard is essential for ensuring the suitability and purity of solvents in industrial and chemical applications, measuring alkalinity in the range of 10 ppm to 200 ppm as NaOH. The standard covers three distinct test methods: pH Method, Indicator Method, and Gas Chromatography (GC) Method.

Key Topics

• Amine Acid Acceptance: Measures a solvent’s capacity to accept or neutralize acids, particularly due to amines present in the solvent.
• Scope and Range: Applicable for solvents with alkalinity from 0.001 to 0.02 weight percent (10 ppm to 200 ppm) as NaOH.
• Test Methods:
  • Test Method A (pH Method): Utilizes pH measurement and titration with standard acid to identify the acidity neutralized by the sample.
  • Test Method B (Indicator Method): Employs colorimetric indicators such as bromphenol blue to determine the endpoint of a titration, indicating acid acceptance.
  • Test Method C (Gas Chromatography Method): Quantifies specific amines using gas chromatography in accordance with relevant ASTM practices.
• Precision and Repeatability: The standard outlines precision, repeatability, and reproducibility parameters, supporting consistent analytical results.
• Safety and Regulatory Considerations: Users must establish appropriate safety, health, and environmental protocols and ensure compliance with relevant regulations.

Applications

ASTM D2106-07(2022) is widely used across multiple industries where halogenated organic solvents are critical components, including:

• Solvent Manufacturing: Ensuring products meet required alkalinity specifications and quality standards.
• Quality Control in Chemical Processing: Validating that solvents used in synthesis, extraction, or cleaning processes do not introduce excess alkalinity.
• Environmental Analysis: Monitoring the acid-neutralizing potential of solvents, which can impact handling, storage, and waste management.
• Research and Development: Providing reliable methods for characterizing solvent properties during formulation or process optimization.
• Regulatory Compliance: Supporting documentation for product certification and adherence to international trade and safety requirements.

The practical value of this standard lies in its reliability and adaptability in quality assurance protocols, enabling stakeholders to verify solvent composition quickly and accurately.

Related Standards

ASTM D2106-07(2022) references and aligns with several important documents and industry standards, including:

• ASTM D6806: Practice for Analysis of Halogenated Organic Solvents and Their Admixtures by Gas Chromatography
• ASTM E70: Test Method for pH of Aqueous Solutions With the Glass Electrode
• ASTM E200: Practice for Preparation, Standardization, and Storage of Standard and Reagent Solutions for Chemical Analysis

Keywords: amine acid acceptance, alkalinity, halogenated organic solvents, ASTM standard, solvent analysis, quality control, gas chromatography, pH titration, indicator method

For organizations involved in the production, analysis, and regulation of halogenated organic solvents, adherence to ASTM D2106-07(2022) ensures consistent product quality, accurate measurement of alkalinity, and compliance with international best practices.