2,6-Difluoronitrobenzene Industrial Purity Specifications and Technical Data
- High-Purity Standards: Commercial grades typically exceed 98.0% purity via GC or HPLC analysis.
- Synthesis Optimization: Oxidation of 2,6-difluoroaniline remains the primary manufacturing process for scale-up.
- Bulk Procurement: Industrial supply requires strict adherence to COA specifications and safety protocols.
In the realm of fine chemical synthesis and pharmaceutical intermediates, consistent quality control is paramount. 2,6-Difluoronitrobenzene (CAS: 19064-24-5) serves as a critical building block for the production of agrochemicals, pharmaceuticals, and specialized organic materials. For process chemists and procurement managers, understanding the nuanced specifications regarding industrial purity and physical properties is essential for ensuring downstream reaction efficiency. This technical overview details the critical parameters required for bulk sourcing and manufacturing integration.
Physical and Chemical Properties
The reliability of any synthetic pathway depends on the integrity of the starting materials. 2,6-Difluoronitrobenzene, also frequently referenced in literature as 1,3-Difluoro-2-nitrobenzene, exhibits specific physical characteristics that must be verified upon receipt. Variations in density or boiling point can indicate the presence of isomeric impurities or residual solvents that may inhibit catalytic processes.
| Property | Specification / Value |
|---|---|
| CAS Number | 19064-24-5 |
| Molecular Formula | C6H3F2NO2 |
| Molecular Weight | 159.09 g/mol |
| Appearance | Light yellow to yellow-green liquid or solid |
| Melting Point | 0°C to 22°C (varies by crystallinity) |
| Boiling Point | 91-92 °C at 11 mmHg |
| Density | 1.503 g/mL at 25 °C |
| Flash Point | 88°C to 190°F (depends on testing method) |
| Refractive Index | Standard organic range |
Maintaining these specifications within tight tolerances is a hallmark of a reliable global manufacturer. Deviations in density, for instance, often correlate with incomplete nitration or the presence of mono-fluorinated byproducts.
Manufacturing Process and Synthesis Route
The commercial viability of this intermediate relies heavily on an optimized synthesis route. The most common industrial method involves the oxidation of 2,6-difluoroaniline. In laboratory settings, this is often achieved using sodium perborate tetrahydrate in glacial acetic acid. However, scaling this reaction requires precise temperature control, typically maintained between 80-90°C, to maximize yield while minimizing exothermic risks.
Historical data suggests laboratory yields around 52%, but modern manufacturing process improvements aim to significantly exceed this efficiency through continuous flow chemistry or improved catalytic systems. The reaction mixture is typically quenched in water, extracted with organic solvents such as ether or ethyl acetate, and purified via distillation under reduced pressure. It is crucial for buyers to inquire about the specific purification steps employed, as residual acetic acid or aniline precursors can interfere with subsequent nucleophilic aromatic substitution reactions.
When evaluating suppliers for 2,6-Difluoronitrobenzene, technical consistency is paramount. High-quality production ensures that the 2,6-difluoro-1-nitrobenzene isomer content is minimized, preserving the regioselectivity required for complex drug synthesis.
Industrial Purity and Impurity Profiles
For pharmaceutical and agrochemical applications, standard reagent grade is often insufficient. Industrial buyers must demand a comprehensive COA (Certificate of Analysis) that details impurity profiles beyond simple assay percentages. Key impurities to monitor include:
- Residual Aniline: Unreacted 2,6-difluoroaniline can act as a nucleophile in downstream steps, creating difficult-to-separate byproducts.
- Isomeric Contaminants: Presence of 2,4-difluoro isomers can alter reaction kinetics.
- Water Content: Excess moisture can hydrolyze sensitive intermediates during storage or reaction.
Advanced analytical methods such as Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC) are standard for verifying purity levels above 98.0% or 99.0%. NINGBO INNO PHARMCHEM CO.,LTD. utilizes rigorous QC protocols to ensure that every batch meets these stringent analytical standards, providing stability for long-term production runs.
Safety, Handling, and Storage
Proper handling of fluorinated nitro compounds is critical due to their potential irritancy and reactivity. According to GHS classification, this material carries a Warning signal and is associated with hazard statements H315 (Skin Irritation), H319 (Eye Irritation), and H335 (Respiratory Irritation).
| Safety Parameter | Requirement |
|---|---|
| GHS Symbol | GHS07 (Irritant) |
| PPE Requirements | Eyeshields, Gloves, Type P3 Respirator |
| Storage Conditions | Inert atmosphere, Room Temperature |
| Hazard Class | Combustible Solids / Liquids (Class 11) |
| HS Code | 29049090 |
Storage should be conducted in a well-ventilated area, keeping containers tightly closed to prevent moisture uptake. Bulk procurement strategies should account for these safety requirements, ensuring that logistics partners are certified to handle combustible organic solids.
Procurement and Bulk Supply Considerations
Market pricing for fluorinated intermediates can fluctuate based on raw material availability and energy costs associated with distillation. While small-scale laboratory prices may appear high per gram, bulk pricing models offer significant economies of scale. Procurement teams should focus on total cost of ownership, which includes purity consistency, packaging integrity, and supply chain reliability.
NINGBO INNO PHARMCHEM CO.,LTD. stands as a premier partner for securing high-volume supplies of specialized intermediates. By integrating robust manufacturing process controls with transparent documentation, we support global supply chains requiring uninterrupted access to critical chemical building blocks. Ensuring a stable supply of high-purity materials allows R&D and production teams to focus on innovation rather than quality remediation.
In conclusion, selecting the right partner for 2,6-Difluoronitrobenzene involves more than comparing unit costs. It requires a deep understanding of synthesis capabilities, purity verification, and safety compliance. By prioritizing these technical factors, manufacturers can secure a competitive advantage in the development of next-generation pharmaceutical and agrochemical products.