China Factory Direct
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| CAS number | 58556-75-5 |
| Product name | 2,7-Dibromonaphthalene |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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 |
|---|---|---|
| Organic Synthesis | Serving as a synthetic intermediate for the preparation of polycyclic aromatic hydrocarbon derivatives | Introducing the naphthalene ring structure via cross-coupling reactions such as Suzuki coupling and Heck reaction |
| Materials Science | Used in the synthesis of organic semiconductor materials, liquid crystal molecules, and optoelectronic functional materials | Acting as a building block in the synthesis of conjugated polymers or small molecules, e.g., for preparing OLED and OFET device materials |
| Pharmaceutical R&D | Serving as a structural building block for drug molecules or biologically active compounds | Constructing pharmacologically active naphthalene-based compounds via functional group transformations or cyclization reactions |
| Dyes & Pigments | Used in the synthesis of high-performance dyes or fluorescent probes | Functioning as the chromophore core structure, with bromination sites further modified to introduce auxochromes |
| Polymer Chemistry | Employed as a monomer or crosslinker for specialty polymer synthesis | Participating in condensation or addition polymerization to produce functional polymers with rigid backbones |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 254 nm, calibrated against certified reference standard. |
| Residual Solvents | GC-FID | Separation and quantification of volatile organic solvents using gas chromatography with flame ionization detection. |
| Moisture Content | Karl Fischer Titration | Coulometric or volumetric titration based on the reaction of iodine with water in a pyridine-methanol solvent system. |
| Heavy Metals | ICP-OES | Multi-element quantification of Pb, Cd, Hg, As, and other regulated metals after acid digestion and plasma emission spectroscopy. |
| Chloride Impurity | Ion Chromatography | Separation and conductivity detection of chloride ions in aqueous extract after sample dissolution and filtration. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid phase transition temperature using controlled heating and visual observation. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of visible particulates or discoloration under standardized lighting. |
| Residue on Ignition | Gravimetric Analysis | Measurement of non-volatile inorganic residue after high-temperature ashing at 600-700 C and weighing. |
| Organic Volatile Impurities (other than solvents) | GC-MS | Identification and semi-quantification of trace volatile organic impurities using mass spectral library matching. |
| Particle Size Distribution | Laser Diffraction | Analysis of dry powder particle size via light scattering pattern generated by dispersed particles in air. |
| Sulfated Ash | Gravimetric Analysis | Determination of inorganic residue after ignition with sulfuric acid treatment to convert metals to sulfates. |
| Related Substances | HPLC-DAD | Detection and relative quantification of structurally similar impurities using diode array detection across multiple wavelengths. |
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 124–128°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Identification (NMR) | Conforms to reference spectrum |
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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.