2-Bromo-9,9'-spirobi[9H-fluorene] Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 171408-76-7 |
| Product name | 2-Bromo-9,9'-spirobi[9H-fluorene] |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Electronic GradeMaterial GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for 2-Bromo-9,9'-spirobi[9H-fluorene]
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2-Bromo-9,9'-spirobi[9H-fluorene] Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2-Bromo-9,9'-spirobi[9H-fluorene]
| Industry | Application | Process |
|---|---|---|
| Organic Electronic Materials | Hole transport layer (HTL) material for organic light-emitting diodes (OLEDs) | Thin-film deposition via vacuum thermal evaporation or solution spin-coating; used as an HTL component to synergistically optimize carrier injection and transport with TPD, NPB, etc. |
| Organic Electronic Materials | Donor/acceptor interface modification material for organic photovoltaics (OPVs) | Processed via solution-based methods (e.g., chlorobenzene, ortho-dichlorobenzene) to tune active-layer morphology and energy-level alignment |
| Organic Electronic Materials | Host material for thermally activated delayed fluorescence (TADF) devices | Codoped via co-evaporation with TADF emitters (e.g., DMAC-DPS); leverages high triplet energy (ET ≈ 2.75 eV) to suppress reverse intersystem crossing energy loss |
| Fine Chemicals | Monomer for synthesizing high-performance fluorene-based polymers | Integrated into conjugated backbones via Suzuki or Ullmann coupling reactions to produce electroluminescent polymers with high glass transition temperature (Tg > 180 °C) and superior thermal stability |
Manufacturing Quality Control of 2-Bromo-9,9'-spirobi[9H-fluorene]
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at characteristic wavelength. |
| Related Substances | HPLC-UV | Detects and quantifies structurally similar impurities via retention time comparison and peak area normalization. |
| Residual Solvents | GC-FID | Measures volatile organic solvents by gas chromatography with flame ionization detection using headspace sampling. |
| Water Content | Karl Fischer Titration | Determines water by coulometric or volumetric titration with iodine-based reagent reacting stoichiometrically with water. |
| Heavy Metals | ICP-MS | Quantifies trace metal contaminants (e.g., Pb, Cd, Ni) using inductively coupled plasma mass spectrometry for high sensitivity. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride ions using suppressed conductivity detection after anion exchange separation. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after controlled high-temperature ashing and weighing. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid using calibrated capillary tube method. |
| Appearance | Visual Inspection | Assesses physical state, color, and presence of foreign particles under controlled lighting and white background. |
| Bulk Density | Tap Density Tester | Measures mass per unit volume of freely settled and tapped powder using standardized cylinder and tapping mechanism. |
| Particle Size Distribution | Laser Diffraction | Analyzes size distribution by measuring angular variation in intensity of laser light scattered by dispersed particles. |
| Optical Rotation | Polarimetry | Measures specific rotation using sodium D-line light passing through solution in a defined path length cell. |
Technical Specifications of 2-Bromo-9,9'-spirobi[9H-fluorene]
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 245–249 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Residue on Ignition | <=0.1% |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 2-Bromo-9,9'-spirobi[9H-fluorene]
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2-Bromo-9,9'-spirobi[9H-fluorene]
Packaging of 2-Bromo-9,9'-spirobi[9H-fluorene]
Industrial 2-Bromo-9,9'-spirobi[9H-fluorene] Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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