2,2',7,7'-Tetrabromo-9,9'-spirobifluorene Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 128055-74-3 |
| Product name | 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeElectronic GradeReagent 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 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
| Industry | Application | Process Description |
|---|---|---|
| Electronic Materials | Organic Light-Emitting Diode (OLED) Materials | Used as hole-transport or host materials to enhance device efficiency and stability |
| Chemical Research | Organic Synthesis Intermediates | Applied in the synthesis of other functional organic compounds or polymers |
| Flame-Retardant Materials | Flame-Retardant Additives | Employed as flame retardants for polymeric materials to improve fire resistance |
| Optoelectronic Materials | Fluorescent Materials | Exhibit excellent thermal stability and fluorescence performance, suitable for optoelectronic devices |
Manufacturing Quality Control of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component using reversed-phase HPLC with UV detection at 280 nm based on peak area comparison to reference standard. |
| Related Substances | HPLC-UV | Detects and quantifies structurally similar impurities (e.g., mono-, di-, tri-brominated intermediates) using gradient HPLC separation and UV detection. |
| Residual Solvents | GC-FID | Identifies and quantifies volatile organic solvents (e.g., toluene, DMF) by gas chromatography with flame ionization detection. |
| Moisture Content | Karl Fischer Titration | Determines water content via coulometric or volumetric titration using iodine generated electrochemically in presence of water. |
| Heavy Metals | ICP-MS | Quantifies trace metal impurities (e.g., Pd, Ni, Fe) by inductively coupled plasma mass spectrometry after acid digestion. |
| Chloride Content | Ion Chromatography | Measures residual chloride ions using suppressed conductivity detection after aqueous extraction. |
| Ash Content | Gravimetric Analysis | Determines inorganic residue by high-temperature incineration followed by weighing of the remaining ash. |
| Melting Point | Capillary Melting Point Apparatus | Measures temperature range at which solid transitions to liquid using calibrated capillary method per USP <741>. |
| Bulk Density | ASTM D1895 Method A | Determines mass per unit volume of freely settled powder using a calibrated cylinder and balance. |
| Particle Size Distribution | Laser Diffraction | Analyzes particle size distribution by measuring angular variation in intensity of laser light scattered by dispersed particles. |
| Sulfated Ash | Gravimetric Analysis | Quantifies metallic impurities as sulfate salts after combustion with sulfuric acid and high-temperature ignition. |
| Residual Palladium | ICP-OES | Measures palladium catalyst residue by inductively coupled plasma optical emission spectroscopy following microwave-assisted acid digestion. |
Technical Specifications of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 345–350 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Conforms to reference spectrum |
| 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 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
Safety Information of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene
Industrial 2,2',7,7'-Tetrabromo-9,9'-spirobifluorene 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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