China Factory Direct
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| CAS number | 86-73-7 |
| Product name | Fluorene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial GradeElectronic 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) |
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 |
|---|---|---|
| Chemical Synthesis | As an organic synthesis intermediate | Used to produce derivatives—such as halogenated and nitrated compounds—via chemical reactions including halogenation and nitration |
| Materials Science | Preparation of high-performance polymers | Employed as a monomer in polymerization to produce specialty polymeric materials, including conductive polyfluorenes |
| Optoelectronics | OLED material production | Applied in synthesizing emissive layer materials for organic light-emitting diodes (OLEDs), where fluorene derivatives are widely used owing to their favorable optoelectronic properties |
| Dye Manufacturing | Dye synthesis | Used as a raw material in dye synthesis to yield brightly colored, stable dye products |
| Pharmaceuticals | Drug synthesis | Utilized as a key structural component or precursor in the construction of active pharmaceutical ingredients (APIs) |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Assay | High-Performance Liquid Chromatography (HPLC) | Uses a reversed-phase column (e.g., C18) and a UV detector (typically at 248 nm or 265 nm) to quantify the purity and content of fluorene based on retention time and peak area. Offers high sensitivity and excellent separation efficiency. |
| Purity Analysis | Gas Chromatography (GC) | Suitable for samples with good volatility. Employs a capillary column (e.g., DB-5) and a Flame Ionization Detector (FID) to effectively separate fluorene from organic impurities and assess its purity. |
| Structural Confirmation | Ultraviolet-Visible Spectrophotometry (UV-Vis) | Utilizes characteristic absorption peaks of fluorene in the 200–300 nm range (e.g., around 208 nm, 220 nm, 275 nm) for qualitative analysis and structural verification. |
| Structural Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Analyzes characteristic functional group peaks of fluorene, such as aromatic ring C=C stretching vibrations (approximately 1600–1500 cm⁻¹) and C–H out-of-plane bending vibrations, to verify authenticity and confirm molecular structure. |
| Crystal Form and Physical Appearance | Differential Scanning Calorimetry (DSC) | Measures melting point and thermal behavior (e.g., melting enthalpy, phase transition temperature) of fluorene to evaluate crystalline form consistency and thermal stability; a key technique for solid-state quality control. |
| Impurity Detection | Thin-Layer Chromatography (TLC) | Uses silica gel plates and appropriate developing solvents (e.g., petroleum ether:ethyl acetate). Organic impurities are detected using visualization methods such as UV lamp fluorescence observation or iodine vapor staining. Simple and rapid for screening purposes. |
| Residual Solvents | Headspace Gas Chromatography (HS-GC) | Detects residual organic solvents (e.g., toluene, benzene, acetone) that may remain from the manufacturing process. Highly sensitive and compliant with pharmacopoeial requirements for controlling volatile organic impurities. |
| Test Item | Specification |
|---|---|
| Appearance | Gray crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 80.0–82.0°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% |
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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.