4-Chloro-2-fluorotoluene: Industrial Purity & Supply Chain
Technical Specifications and Purity Grades of 4-Chloro-2-fluorotoluene
In industrial synthesis, 4-chloro-2-fluorotoluene (CAS 452-75-5) serves as a critical aryl halide intermediate, particularly in the production of pharmaceuticals and agrochemicals. The compound is typically supplied in two primary purity grades: ≥98% (GC) and ≥99% (GC). The higher purity grade is essential for applications requiring minimal side reactions, such as in palladium-catalyzed cross-couplings where trace impurities can poison catalysts. For instance, in Buchwald-Hartwig aminations, even ppm levels of certain metals or sulfur compounds can drastically reduce yield. Our product, 4-chloro-2-fluorobenzyl bromide, is manufactured under strict quality control to ensure consistent performance as a drop-in replacement for major brands. The physical properties—boiling point 158 °C at 743 mmHg, density 1.186 g/mL at 25 °C, and refractive index n20/D 1.498—are tightly controlled to match industry standards, ensuring seamless integration into existing processes.
| Parameter | ≥98% Grade | ≥99% Grade |
|---|---|---|
| Assay (GC) | ≥98.0% | ≥99.0% |
| Appearance | Colorless to light yellow liquid | Colorless liquid |
| Water Content (KF) | ≤0.1% | ≤0.05% |
| Individual Impurity | ≤1.0% | ≤0.5% |
| Boiling Point | 158 °C | 158 °C |
For buyers seeking a fluorinated benzyl bromide derivative, the 99% grade is recommended for sensitive applications. However, the 98% grade often suffices for large-scale reactions where subsequent purification steps are planned. We advise reviewing the batch-specific COA to confirm suitability for your process.
Certificate of Analysis (COA) Parameters and Batch Consistency
Every shipment of 4-chloro-2-fluorotoluene from NINGBO INNO PHARMCHEM includes a comprehensive COA detailing critical parameters: appearance, assay by GC, water content, and individual impurity profiles. Batch-to-batch consistency is paramount in industrial manufacturing; our production employs rigorous in-process controls to minimize variability. A typical COA will list the actual assay (e.g., 99.2%), water content (e.g., 0.03%), and the largest single impurity (e.g., 0.3%). We also monitor for trace metals that could interfere with downstream catalysis. While standard COAs do not include heavy metal analysis by default, we can provide ICP-MS data upon request for customers concerned about catalyst poisoning. This level of transparency is crucial when sourcing 2-fluoro-4-chlorobenzyl bromide for high-value synthesis routes. For a deeper dive into preventing catalyst poisoning, refer to our article on sourcing strategies to avoid Pd-catalyst poisoning in Buchwald-Hartwig couplings.
Industrial Handling and Bulk Packaging Solutions
4-Chloro-2-fluorotoluene is classified as a flammable liquid (flash point 124 °F) and an irritant, requiring proper storage in a flammables area. For bulk procurement, we offer standard packaging in 210L steel drums and 1000L IBC totes, both compliant with UN 1993 regulations for flammable liquids, Packing Group III. The material is typically loaded under nitrogen to prevent moisture ingress and oxidation. In our field experience, the compound exhibits slight hygroscopicity; prolonged exposure to ambient air can increase water content, potentially affecting reactions sensitive to moisture. Therefore, we recommend using sealed containers and nitrogen blanketing after opening. For customers in regions with high humidity, we can provide additional desiccant packaging or advise on handling protocols. Our logistics team ensures that all shipments are labeled with GHS hazard statements (H226, H315, H319, H335) and precautionary codes (P210, P302+P352, P305+P351+P338). While we do not handle regulatory compliance for specific regions, our packaging meets international transport standards for physical safety.
Supply Chain Reliability and Drop-in Replacement Strategy
NINGBO INNO PHARMCHEM positions its 4-chloro-2-fluorotoluene as a cost-effective drop-in replacement for products from Sigma-Aldrich, TCI, and Chem-Impex. Our manufacturing process yields identical physical and chemical properties, ensuring that customers can switch without revalidating their entire process. We maintain a robust inventory of this benzyl bromide derivative to buffer against supply disruptions. Our production capacity allows for lead times as short as two weeks for standard orders, with custom synthesis available for modified specifications. By sourcing directly from our ISO-certified facilities, buyers can achieve significant cost savings—often 20-30% below catalog prices—without compromising quality. For Spanish-speaking clients, we also provide technical documentation in Spanish; see our article on abastecimiento de 4-cloro-2-fluorobencil bromuro for region-specific guidance.
Non-Standard Parameters and Field Experience Insights
Beyond standard specifications, our technical team has observed that 4-chloro-2-fluorotoluene can undergo subtle color changes upon prolonged storage, shifting from colorless to light yellow or light orange. This is often due to trace oxidation or light exposure and does not typically affect reactivity for most applications. However, for color-sensitive processes (e.g., optical brighteners or certain pharmaceutical intermediates), we recommend storing the material in amber glass or opaque containers under inert gas. Another field note: at temperatures below -10 °C, the liquid's viscosity increases noticeably, which can complicate pouring or pumping from drums. Pre-warming to 15-20 °C restores normal flow. Additionally, we have encountered instances where residual acidity from the manufacturing process (if not adequately neutralized) can lead to corrosion in stainless steel reactors over extended periods. Our production includes a thorough washing step to ensure pH neutrality, but we advise customers to verify compatibility with their equipment. These insights stem from years of hands-on experience with fluorinated benzyl bromide intermediates and are shared to help process engineers optimize their operations.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 4-chloro-2-fluorotoluene?
Our standard MOQ is 1 kg for samples and 25 kg for bulk orders. However, we can accommodate smaller quantities for initial trials; please contact our sales team for details.
Do you provide custom synthesis of 4-chloro-2-fluorotoluene derivatives?
Yes, we offer custom synthesis services for related compounds, including 4-chloro-2-fluorobenzyl bromide and other aryl halide intermediates. Our R&D team can scale up from grams to multi-kilogram batches.
What is the typical lead time for bulk orders?
For standard 25 kg or 250 kg orders, lead time is 2-3 weeks after order confirmation. Larger quantities may require 4-6 weeks, depending on current production schedules.
Can you provide a sample for evaluation?
We offer free samples (up to 100 g) for qualified buyers. Shipping costs are typically borne by the customer, but we can arrange prepaid shipping for established accounts.
How do you ensure batch-to-batch consistency?
Each batch is tested against strict internal specifications, and a COA is issued. We retain retention samples for two years and can provide historical data upon request.
Sourcing and Technical Support
When sourcing 4-chloro-2-fluorotoluene, partnering with a manufacturer that combines technical expertise with supply chain reliability is essential. NINGBO INNO PHARMCHEM offers not only a high-purity product but also the application knowledge to support your synthesis route. Whether you need a standard grade or a tailored solution, our process engineers are available to discuss your requirements. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.