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D3447-01 – Standard Test Method Technical Guide
🔬 Purity of Halogenated Organic Solvents – Standard Test Method D3447-01
This standard, under ASTM Committee D26, describes determining common impurities in halogenated organic solvents. It uses a temperature-programmed gas chromatographic technique with a TCD or FID, achieving sensitivity in the ppm range.
🧪 Principle and Apparatus Setup
The method separates the solvent from its impurities via a packed column containing 30 % silicone fluid on 80/100 mesh diatomaceous earth or a similar capillary column.
| 🟦 Component | 📏 Specification |
|---|---|
| Gas Chromatograph | 1-mV recorder/integrator, TCD or FID |
| Column | 6-m x 3.2-mm OD SS packed with 30% silicone fluid on 80/100 mesh diatomaceous earth |
| Carrier Gas | Helium, Research Grade |
| Syringe | 10-µL GC syringe |
⚙️ Procedure and Chromatographic Conditions
Install the column, set He flow to 40 mL/min, and configure the GC as follows:
| 🎯 Parameter | ⚡ Value |
|---|---|
| Injection Port Temp | 200°C |
| Detector Temp | 220°C |
| Oven Init / Final Temp | 50°C / 170°C |
| Program Rate | 10°C/min |
| Carrier Flow | <