D2072-92 – Standard Test Method Technical Guide

ASTM D2072-92 (Reapproved 1998) defines the standard procedure for determining water content in fatty nitrogen compounds using a Karl Fischer back-titration method. Developed jointly by ASTM and the American Oil Chemists’ Society, this test method is critical for verifying the quality of amines and quaternary ammonium compounds used in industrial surfactants and emulsifiers. Accuracy depends heavily on strict anhydrous conditions and proper electrometric endpoint detection.

📐 Scope and Compound Categories

This test method specifically covers the determination of water in fatty primary amines, diamines, amidoamines, difatty secondary amines, and quaternary ammonium chlorides. The standard is structured by compound type, with specific procedural notes for each category as detailed in the table below. It is the responsibility of the user to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in Sections 5.3, 6.1, and 11.2 of the standard.