China Factory Direct
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| CAS number | 74129-11-6 |
| Product name | 4-BROMOPYRIDINE HYDROBROMIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial GradeSpecialty GradeReagent 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 |
|---|---|---|
| Pharmaceuticals | Used as a pharmaceutical intermediate in the synthesis of antitumor, antiviral, and neurosystem-related drugs | Serves as a pyridine ring precursor in organic synthesis, participating in condensation, substitution, and related reactions |
| Agrochemicals | Used as an agrochemical intermediate for synthesizing biologically active heterocyclic compounds | Constructs active molecular scaffolds via nucleophilic substitution or metal-catalyzed coupling reactions |
| Chemical Reagents | Used as an organic synthesis reagent or ligand precursor | Employed in the preparation of metal complexes or as a component of basic catalysts |
| Materials Science | Used in the synthesis of functional materials (e.g., MOFs, optoelectronic materials) | Acts as a nitrogen-containing ligand in coordination polymerization or self-assembly processes |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Acid-Base Titration | Quantifies 4-pyridine hydrochloride by titration with standardized sodium hydroxide using potentiometric or visual endpoint detection. |
| Loss on Drying | Gravimetric Analysis | Measures mass loss after drying at specified temperature and time to determine volatile content including water and residual solvents. |
| Water Content | Karl Fischer Titration | Determines trace water via coulometric or volumetric titration based on iodine consumption in a pyridine-methanol-sulfur dioxide system. |
| Residual Solvents | Gas Chromatography (GC) | Separates and quantifies organic solvents (e.g., ethanol, acetone) using a capillary column and flame ionization detection. |
| Heavy Metals | ICP-OES | Quantifies metal impurities (e.g., Pb, Cd, Ni) by plasma excitation and elemental emission spectroscopy. |
| Chloride Impurity | Potentiometric Titration | Measures chloride ions by titration with silver nitrate using a silver/silver chloride electrode for endpoint detection. |
| Related Substances | HPLC-UV | Separates and quantifies structurally related impurities using reversed-phase chromatography and UV detection at 254 nm. |
| pH of Aqueous Solution | pH Potentiometry | Measures hydrogen ion activity in a defined aqueous solution using calibrated glass electrode and reference electrode. |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Appearance | Visual Inspection | Evaluates physical state, color, and presence of foreign particles against established visual standards under controlled lighting. |
| Bulk Density | Graduated Cylinder Method | Measures mass per unit volume of freely settled powder using standardized cylinder and weight procedures. |
| Microbial Limits | Membrane Filtration | Detects aerobic microorganisms by filtration, membrane transfer to culture media, and colony enumeration after incubation. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 230-235°C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=20 ppm |
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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.