Brominated Carbazole: Industrial Purity & Bulk Supply Guide
Technical Specifications and Purity Grades of 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole (CAS 894791-46-9)
As a brominated carbazole compound with the CAS number 894791-46-9, 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole is a critical carbazole building block for advanced material synthesis. This biphenyl carbazole derivative is primarily utilized in organic electroluminescence applications, where its molecular structure enables efficient charge transport and emission properties. At NINGBO INNO PHARMCHEM CO.,LTD., we supply this compound in industrial quantities with a focus on consistent quality and competitive pricing.
The standard industrial purity for this product is ≥99.0% by HPLC, which meets the requirements for most research and development applications. For customers requiring higher performance, we offer a high-purity grade of ≥99.5% that undergoes additional purification steps to minimize trace metal content and organic impurities. These purity levels are critical for achieving reproducible device performance in OLED manufacturing. Our 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole is positioned as a seamless drop-in replacement for existing supply chains, offering identical technical parameters while improving cost-efficiency and supply reliability.
For procurement managers evaluating bulk price options, we provide transparent tiered pricing based on annual volume commitments. Our manufacturing process has been optimized to scale from kilogram to multi-ton quantities without compromising purity. This scalability is essential for industrial users transitioning from pilot to full production. The synthesis route employs robust chemistry that avoids hazardous reagents, ensuring a stable supply even under tightening environmental regulations.
| Parameter | Standard Grade | High Purity Grade |
|---|---|---|
| Purity (HPLC) | ≥99.0% | ≥99.5% |
| Appearance | White to off-white powder | White crystalline powder |
| Melting Point | Please refer to COA | Please refer to COA |
| Solubility | Soluble in common organic solvents | Soluble in common organic solvents |
| Loss on Drying | ≤0.5% | ≤0.2% |
Certificate of Analysis (COA) Parameters and Batch-to-Batch Consistency
Every shipment of 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole is accompanied by a comprehensive COA that documents critical quality attributes. The COA includes HPLC purity, melting point range, loss on drying, and residue on ignition. For high-purity grades, we also report trace metal analysis by ICP-MS, with typical specifications of Fe ≤10 ppm, Cu ≤5 ppm, and Pd ≤2 ppm. These metals can act as quenching sites in OLED devices, so controlling them is essential for organic electroluminescence performance.
Batch-to-batch consistency is maintained through rigorous in-process controls and final product testing. Our quality system ensures that the industrial purity remains within narrow specification limits, which is vital for customers who have validated their downstream processes. We archive retention samples from every batch for three years, allowing retrospective analysis if needed. This level of documentation supports regulatory filings and troubleshooting in custom synthesis projects.
For customers requiring additional testing, such as differential scanning calorimetry (DSC) or thermogravimetric analysis (TGA), these can be included upon request. We understand that for advanced material applications, the standard COA may not capture all relevant properties. Our technical team can work with you to define a tailored testing protocol that aligns with your specific quality requirements.
Industrial Handling, Storage, and Bulk Packaging Solutions
Proper handling and storage are essential to maintain the integrity of this brominated carbazole compound. The product should be stored in a cool, dry place away from direct sunlight and moisture. Recommended storage temperature is 2-8°C for long-term stability, though short-term storage at ambient temperature is acceptable if the container remains sealed. The material is hygroscopic and should be handled under an inert atmosphere when possible to prevent moisture absorption.
For bulk price orders, we offer several packaging configurations tailored to industrial needs. Standard packaging includes 25 kg fiber drums with inner aluminum foil bags, which provide excellent moisture and light protection. For larger volumes, we supply 210L steel drums with nitrogen purging, ensuring product integrity during ocean freight. Our logistics team specializes in hazardous material shipping and can arrange door-to-door delivery with full documentation. We do not claim EU REACH compliance, but our packaging meets international transport regulations for chemical substances.
When handling this material, standard personal protective equipment (PPE) should be worn, including gloves, safety glasses, and a lab coat. Although the compound has low acute toxicity, it may cause skin and eye irritation. A safety data sheet (SDS) is provided with every shipment and should be reviewed before use.
Non-Standard Parameters and Field Experience with Brominated Carbazole Derivatives
Beyond the standard specifications, our field experience has revealed several non-standard parameters that can impact performance in sensitive applications. One notable observation is the tendency of this biphenyl carbazole derivative to exhibit slight discoloration under prolonged exposure to ambient light, even in solid form. While this does not affect chemical purity, it can be a concern for customers who require a pristine white appearance for optical applications. We recommend storing the material in amber glass or opaque containers and minimizing light exposure during handling.
Another practical consideration is the material's behavior at low temperatures. During winter shipping, we have observed that the powder can become electrostatically charged, leading to handling difficulties and potential loss during transfer. To mitigate this, we advise grounding all equipment and using anti-static packaging for shipments to cold climates. Additionally, trace impurities from the synthesis route can sometimes result in a faint phenolic odor, which is not indicative of degradation but may be noticeable when opening fresh containers. This odor dissipates quickly upon ventilation.
For customers using this compound in vacuum deposition processes, we have noted that the sublimation temperature can vary slightly between batches due to differences in crystal morphology. While the melting point remains within specification, the sublimation rate may need fine-tuning for optimal film thickness control. Our technical team can provide guidance on process adjustments based on batch-specific data.
Supply Chain Reliability and Drop-in Replacement Strategy for B2B Procurement
As a global manufacturer of specialty chemicals, NINGBO INNO PHARMCHEM CO.,LTD. has built a supply chain that prioritizes reliability and transparency. We maintain safety stock of key intermediates to buffer against production disruptions, and our multi-site manufacturing capability allows us to shift production in response to demand spikes. For procurement managers, this means predictable lead times and consistent quality, even for large-volume orders.
Our drop-in replacement strategy is designed to minimize the friction of switching suppliers. We ensure that our 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole matches the physical and chemical properties of existing sources, so no requalification is needed for most applications. We provide detailed analytical comparisons upon request, including HPLC chromatograms and DSC thermograms, to demonstrate equivalence. This approach has been successfully implemented with several OLED material producers, who have transitioned to our product without any process modifications.
For those interested in the broader context of biphenyl carbazole derivative industrial purity bulk price, we have published detailed analyses on our knowledge base. You can read more about market trends and cost drivers in our article on biphenyl carbazole derivative pricing factors. Additionally, our Japanese-language resource covers similar ground for the Asia-Pacific market: industrial purity considerations for biphenyl carbazole derivatives.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole?
Our standard MOQ is 1 kg for sample evaluation and 25 kg for commercial orders. For annual contracts, we can accommodate smaller initial shipments as part of a larger volume commitment. Please contact our sales team to discuss your specific needs.
Can you provide custom synthesis of related brominated carbazole derivatives?
Yes, we offer custom synthesis services for a wide range of carbazole-based compounds. Our R&D team has extensive experience with bromination, Suzuki coupling, and other key reactions. We can scale from gram to kilogram quantities with full analytical support.
What is the typical lead time for bulk orders?
For orders up to 100 kg, lead time is typically 2-3 weeks from order confirmation. Larger quantities may require 4-6 weeks, depending on current production schedules. We maintain buffer stock of key intermediates to minimize delays.
Do you offer discounted pricing for annual contracts?
Yes, we provide tiered pricing based on annual volume commitments. Long-term contracts also include priority production scheduling and dedicated technical support. Contact us for a customized quotation.
How do you ensure batch-to-batch consistency for OLED applications?
We use statistical process control (SPC) to monitor critical quality attributes and maintain a database of historical batch data. Each batch is tested against a reference standard, and we provide a comprehensive COA with every shipment. For OLED-grade material, we also include trace metal analysis and sublimation test data.
Sourcing and Technical Support
In summary, 9-([1,1'-Biphenyl]-4-yl)-3-bromo-9H-carbazole is a versatile building block for advanced material applications, and NINGBO INNO PHARMCHEM CO.,LTD. is your reliable partner for industrial-scale supply. Our commitment to quality, transparency, and customer support ensures that you can integrate our product into your processes with confidence. For custom synthesis requirements or to validate our drop-in replacement data, consult with our process engineers directly.