China Factory Direct
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| CAS number | 1190360-23-6 |
| Product name | 3-Bromo-9,9-dimethylfluorene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25KG/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) |
Based on current marketvolatility and material availability.
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
| Industry | Application | Process |
|---|---|---|
| Optoelectronic Materials | Synthesis of hole-transport materials for organic light-emitting diodes (OLEDs) | Serves as a core structural unit in electron-blocking or hole-transport layers; triarylamine derivatives are constructed via Suzuki coupling or Buchwald–Hartwig amination |
| Optoelectronic Materials | Preparation of organic semiconductors and photoconductors | Functions as a functional intermediate; the bromine atom’s reactivity enables introduction of fluorenyl groups to enhance thermal stability and glass transition temperature |
| Pharmaceutical Chemicals | New drug development and construction of drug molecules | Serves as a rigid, planar drug intermediate participating in carbon–carbon or carbon–heteroatom bond formation reactions |
| Fine Chemicals | Modification of functional polymeric materials | Used as a monomer or chain terminator; the sterically bulky 9,9-dimethylfluorene structure is incorporated via polymerization to tailor optical properties and solubility |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at 254 nm based on peak area comparison against reference standard. |
| Related Substances | HPLC-UV | Detects and quantifies structurally similar impurities (e.g., bromination by-products, dehalogenated analogs) using gradient HPLC-UV with relative response factor correction. |
| Residual Solvents | GC-FID | Identifies and quantifies volatile organic solvents (e.g., toluene, THF, DMF) by gas chromatography with flame ionization detection using internal standard calibration. |
| Water Content | Karl Fischer Titration | Determines trace water via coulometric or volumetric titration using iodine generated electrochemically in presence of water and Karl Fischer reagent. |
| Heavy Metals | ICP-MS | Measures total elemental impurities (e.g., Pb, Cd, Hg, Ni, Cr) after acid digestion using inductively coupled plasma mass spectrometry with isotope dilution quantification. |
| Chloride Impurity | Ion Chromatography | Quantifies chloride ions using suppressed conductivity detection after separation on anion-exchange column with sodium carbonate/bicarbonate eluent. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile inorganic residue after controlled high-temperature ashing (700-800 C) and weighing of the cooled crucible. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid using calibrated capillary tube method per USP <741>. |
| Appearance | Visual Inspection | Assesses physical state, color, and clarity of bulk sample against standard white background under controlled lighting per Ph. Eur. 2.2.1. |
| Bulk Density | ASTM D1895 | Measures mass per unit volume of freely settled powder using standardized graduated cylinder and calibrated balance. |
| Particle Size Distribution | Laser Diffraction | Determines size distribution of solid particles in dry dispersion mode using Mie scattering theory and optical detection of diffracted laser light. |
| Optical Rotation | [alpha]D Measurement | Measures specific rotation using sodium D-line (589 nm) in solution to confirm chiral purity and absence of racemization during synthesis. |
| Test Item | Specification |
|---|---|
| Appearance | White solid |
| Purity | >=98.0% (GC-MS) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 148–152°C |
| Identification (NMR) | Conforms to reference standard |
| Residue on Ignition | <=0.1% |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
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.