This application note describes a method for determining the boiling point range of biodiesel (B100 and B20) using the Agilent 7890A Series GC systems.
The document details a method for determining the boiling point range distribution of pure biodiesel (B100) and blends using ASTM method D7398. It compares results from a standard Agilent 7890A system against one equipped with an LTM module, demonstrating faster run times while maintaining accuracy.
| Oven Temperature Range (Standard) | 40 °C to 400 °C at 15°C/min |
|---|---|
| Oven Temperature Range (LTM) | 325 °C isothermal |
| Column Length and Diameter | 5M x 0.53 mm |
| Carrier Gas Flow Mode | Constant flow mode at 14 mL/min He |
| Software Used | ChemStation 4.01 and Agilent SimDis software |
Two Agilent 7890A Series GC systems were used: one with a standard oven and one equipped with an LTM system.
The standard oven produced runs of about 16 minutes, while the LTM system with a one-inch module completed an 8 minute run.
Data is processed using ChemStation 4.01 and the Agilent SimDis software, part number G2887BA.