ASTM D7359

ASTM D7359 is the standard test method for measuring total fluorine, chlorine, and sulfur in aromatic hydrocarbons and their mixtures using oxidative pyrohydrolytic combustion followed by ion chromatography detection. It provides a defined approach for identifying these heteroatoms in relevant liquid hydrocarbon materials, supporting more consistent analytical results. For laboratories and product users, the method matters because it helps align testing practices around a recognized ASTM procedure for composition control, evaluation, and specification support.

Overview of ASTM D7359

ASTM D7359 describes a combustion ion chromatography-CIC method that converts fluorine, chlorine, and sulfur in aromatic hydrocarbons and related mixtures into detectable ionic forms after oxidative pyrohydrolytic combustion. The resulting ions are then measured by ion chromatography detection. This makes the standard useful when a controlled laboratory method is needed for total halogen and sulfur screening in aromatic-based materials. ASTM D7359 is primarily a technical document for analytical testing, helping users apply a consistent method with clearly defined measurement steps.

Common use cases of ASTM D7359

ASTM D7359 is commonly used in laboratories that test aromatic hydrocarbons and their mixtures for total fluorine, chlorine, and sulfur content. It is a practical choice for quality control, incoming inspection, and product evaluation when elemental contamination or additive-related presence of these components needs to be assessed. The method is also relevant in procurement and compliance workflows where a standard test method is preferred for comparing results across batches, suppliers, or internal specifications.

Benefits of using ASTM D7359

Using ASTM D7359 helps support more consistent analytical testing by providing a recognized procedure for combustion-based ion chromatography measurement. That can improve comparability across labs, reduce ambiguity in reporting, and strengthen quality control decisions. For organizations managing aromatic hydrocarbon materials, the standard can also support procurement verification, specification checks, and risk reduction by offering a repeatable way to monitor fluorine, chlorine, and sulfur content within a defined ASTM framework.

• Oxidative pyrohydrolytic combustion
• Ion chromatography detection
• Total fluorine, chlorine, and sulfur
• Aromatic hydrocarbons and mixtures
• Laboratory testing and quality control