Hexafluorobenzene Manufacturing Process & Synthesis Route
Securing a reliable supply of high-performance fluorinated aromatics requires deep technical insight into production capabilities. At NINGBO INNO PHARMCHEM CO.,LTD., we specialize in delivering process-scale purity for critical applications ranging from NMR standards to advanced polymer synthesis. This technical overview details the manufacturing process, analytical validation, and supply chain stability for Perfluorobenzene, ensuring procurement teams and R&D directors have the data needed for commercial viability.
In-Depth Chemical Synthesis Route and Mechanism Discussion
The industrial production of C6F6 primarily relies on halogen-exchange reactions or high-temperature pyrolysis. For commercial grade applications requiring strict impurity profiles, the nucleophilic aromatic substitution of perchlorobenzene with potassium fluoride is the preferred synthesis route. This method utilizes a phase-transfer catalyst, such as tetrakis(diethylamino)phosphonium bromide, within a high-boiling polar solvent like sulfolane.
Reaction conditions are critical for maximizing yield and minimizing reactor coking. The process typically operates in an autoclave under inert atmosphere, with temperatures ramped between 120°C and 240°C over a 30-hour cycle. Analytical validation via GC and HPLC confirms that optimal conditions achieve yields exceeding 71.7%, with final distillation fractions collected at 79-81°C to ensure industrial purity above 99%. Alternative pyrolysis methods involving dichlorofluoromethane exist but often require more complex purification to remove hydrogen halides and oligomers. Our manufacturing process focuses on the halogen-exchange pathway to guarantee consistency for use as a Fluorinated solvent or intermediate.
Key Reaction Parameters
- Starting Material: Perchlorobenzene (C6Cl6)
- Fluorinating Agent: Anhydrous Potassium Fluoride (KF)
- Catalyst System: Phosphonium salts in sulfolane/toluene
- Reaction Pressure: Autoclave conditions up to 10 MPa
- Purification: Fractional distillation under nitrogen
| Parameter | Specification | Test Method |
|---|---|---|
| Product Name | Hexafluorobenzene | - |
| CAS Number | 392-56-3 | - |
| Molecular Formula | C6F6 | - |
| Molecular Weight | 186.05 g/mol | - |
| Purity (GC Area %) | ≥ 99.5% | GC-MS |
| Boiling Point | 80.0 - 81.0 °C | ASTM D1078 |
| Density (20 °C) | 1.610 - 1.615 g/cm³ | ASTM D4052 |
| Refractive Index | 1.376 - 1.378 | ASTM D1218 |
| Water Content | ≤ 50 ppm | Karl Fischer |
Supply Chain Stability and Packaging Options
Procurement executives prioritize regulatory compliance and logistics security when sourcing tonnage quantities. As a global manufacturer, NINGBO INNO PHARMCHEM CO.,LTD. ensures full documentation support, including comprehensive COA verification for every batch. Our facilities adhere to strict quality assurance protocols, aligning with international standards for hazardous chemical transport. We offer flexible packaging solutions, including 200kg lined steel drums and ISO tanks, customized to meet your bulk price requirements and inventory turnover goals.
For researchers evaluating material compatibility or scaling up production, access to consistent Hexafluorobenzene is essential for maintaining experimental integrity. Our technical support team provides detailed safety data sheets and regulatory guidance for REACH and TSCA compliance. We understand that supply chain disruptions can halt R&D progress, which is why we maintain strategic stock levels to guarantee on-time delivery for long-term contracts.
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