9-Bromo-11,11-Dimethyl-11H-Benzo[a]fluorene Supplier
Technical Specifications and Purity Grades of 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene
9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene (CAS 1198396-29-0), also referred to as 11H-Benzo[a]fluorene, 9-bromo-11,11-dimethyl, is a critical building block in advanced organic synthesis, particularly as an OLED material precursor. Its molecular formula C19H15Br and molecular weight 323.23 g/mol define a rigid polycyclic aromatic framework with a single bromine substitution at the 9-position, enabling versatile cross-coupling reactivity. Industrial users typically require high purity grades to ensure consistent performance in downstream applications. At NINGBO INNO PHARMCHEM, we supply this compound with a standard purity of ≥98% (HPLC), but higher purities up to 99.5% are available upon request for demanding electronic-grade applications. The product appears as a white to off-white crystalline powder, and its purity directly influences the efficiency of subsequent reactions, such as Suzuki-Miyaura couplings used to construct OLED host materials. For a detailed look at how this intermediate performs in coupling reactions, see our article on Suzuki coupling OLED host precursor alternatives.
| Parameter | Standard Grade | High Purity Grade |
|---|---|---|
| Purity (HPLC) | ≥98.0% | ≥99.5% |
| Appearance | White powder | White crystalline powder |
| Melting Point | Please refer to COA | Please refer to COA |
| Loss on Drying | ≤0.5% | ≤0.1% |
| Single Impurity | ≤1.0% | ≤0.2% |
Certificate of Analysis (COA) Parameters and Batch Consistency
For procurement managers, batch-to-batch consistency is non-negotiable. Every shipment of 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene from NINGBO INNO PHARMCHEM is accompanied by a comprehensive Certificate of Analysis (COA) detailing actual results for the specific batch. Key parameters include assay (HPLC), melting point, loss on drying, residue on ignition, and heavy metals. We also monitor trace impurities that could affect color or reactivity in sensitive applications. Our quality control system ensures that each batch meets predefined specifications before release. While we do not claim EU REACH compliance, our internal standards align with rigorous industrial norms. For customers requiring additional testing, such as residual solvent analysis by GC or particle size distribution, these can be arranged. The COA serves as your assurance that the product will perform as a drop-in replacement for existing supply chains, matching the technical parameters of established sources. For a German-language perspective on this compound's role in OLEDs, refer to our article on Suzuki coupling OLED host precursor alternatives.
Industrial Handling and Bulk Packaging for 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene
Proper handling and packaging are essential to maintain product integrity during transit and storage. 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene is classified with GHS07 hazard statements (H302, H315, H319, H335), indicating it is harmful if swallowed, causes skin and eye irritation, and may cause respiratory irritation. We recommend standard PPE including gloves, safety goggles, and lab coats. The product should be stored in a cool, dry place away from direct sunlight. For bulk quantities, we offer packaging in 25 kg fiber drums with inner PE liners, or 210L steel drums for larger orders. For high-volume supply chains, IBC totes can be arranged. Our logistics team ensures secure, compliant shipping with proper labeling and documentation. We focus on physical packaging robustness to prevent any degradation during long-haul transport. While we do not discuss environmental certifications, our packaging is designed to meet international shipping standards for chemical intermediates.
Non-Standard Parameters: Field Observations on Viscosity and Crystallization Behavior
Beyond standard specifications, hands-on experience reveals practical nuances that can impact processing. One such parameter is the crystallization behavior of 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene. While the compound is a solid at room temperature, during purification or solvent evaporation, it can form supersaturated solutions that suddenly crystallize, potentially clogging lines if not managed with controlled cooling rates. In our production, we have observed that the presence of trace impurities, even below 0.5%, can slightly alter the crystal habit, leading to variations in bulk density. This is critical for automated dispensing systems where consistent flowability is required. Another field observation relates to viscosity shifts in solution: when dissolved in common organic solvents like toluene or THF at concentrations above 20% w/w, the solution viscosity can increase non-linearly at temperatures below 10°C, which may affect pumping in continuous flow reactors. These insights come from our in-house process development and are shared to help customers anticipate and mitigate operational challenges. For precise data on your specific conditions, please consult our technical team.
Supply Chain Reliability and Drop-in Replacement Strategy
In today's volatile market, supply chain resilience is paramount. NINGBO INNO PHARMCHEM positions 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene as a seamless drop-in replacement for existing sources. Our manufacturing process is optimized for cost-efficiency without compromising quality, allowing us to offer competitive bulk pricing. We maintain safety stock of key intermediates to buffer against disruptions, and our production capacity can scale to multi-ton quantities. The compound's synthesis route has been refined to minimize by-products, ensuring high yield and purity. By choosing our product, you gain a reliable second source that matches the technical specifications of your current supplier, reducing risk and potentially lowering costs. Our global logistics network ensures timely delivery, whether you need a single drum for R&D or container loads for commercial production. For more information on the product and to request a sample, visit our product page: high-purity 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene?
Our standard MOQ is 1 kg for initial trials. For commercial production, we can supply from 25 kg to multi-ton lots. Please contact our sales team for a tailored quote based on your annual volume.
Can you provide a sample for evaluation?
Yes, we offer free samples (typically 10-50 g) for qualified buyers to assess quality and compatibility. Shipping costs may apply depending on your location.
What is the typical lead time for bulk orders?
For orders up to 100 kg, lead time is usually 2-3 weeks after order confirmation. Larger quantities may require 4-6 weeks, depending on current production schedules. We always communicate realistic timelines upfront.
How do you ensure batch-to-batch consistency?
Every batch is tested against strict internal specifications, and a COA is provided. We use validated HPLC methods and retain samples for future reference. Our process controls minimize variability in purity, appearance, and key impurities.
Is this product suitable for OLED applications?
Absolutely. 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene is widely used as a precursor for OLED host materials via Suzuki coupling. Our high-purity grade is specifically tailored for electronic applications where trace metals and organic impurities must be tightly controlled.
What packaging options are available for international shipping?
We offer 25 kg fiber drums, 210L steel drums, and IBC totes. All packaging complies with international transport regulations for chemical intermediates. We can also accommodate custom packaging requests.
Sourcing and Technical Support
At NINGBO INNO PHARMCHEM, we combine deep chemical expertise with a customer-centric approach to supply 9-Bromo-11,11-dimethyl-11H-benzo[a]fluorene and other advanced intermediates. Our technical team is available to discuss your specific requirements, from purity optimization to handling recommendations. We understand the pressures of B2B procurement and strive to be a partner you can rely on for consistent quality and transparent communication. Ready to optimize your supply chain? Reach out to our logistics team today for comprehensive specifications and tonnage availability.