China Factory Direct
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| CAS number | 117846-56-7 |
| Product name | 5,6-Dibromo-2,3-dimethylpyridine |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeSpecialty Grade |
| Packaging | 5KG/bag25KG/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 | Pharmaceutical intermediate for synthesizing specific active pharmaceutical ingredients (APIs) | Used in organic synthesis |
| Chemicals | Synthetic building block for constructing complex pyridine derivatives | Applied in laboratory R&D |
| Test Item | Common Testing Methods | Method Description |
|---|---|---|
| Appearance and Properties | Visual Inspection, Melting Point Determination | Observe sample color and state (usually white to light yellow crystals), determine melting point range (literature value ≈ 85–90 °C), and assess purity and crystallinity. |
| Content Determination (Active Ingredient) | High-Performance Liquid Chromatography (HPLC) | Use a C18 column with methanol/water or acetonitrile/water as mobile phase, detect using a UV detector (λ ≈ 254 nm), quantify by external standard method, accurately measure active ingredient content, and separate impurity interference. |
| Impurity Profile Analysis | HPLC-UV / HPLC-MS | Use gradient elution HPLC coupled with UV or mass spectrometry detection to identify and quantify structural-related impurities (e.g., monobrominated derivatives, demethylated products, oxidation products, etc.), in compliance with ICH Q3B guidelines. |
| Bromine Content Determination | Combustion Ion Chromatography (CIC) or Oxygen Bomb Combustion + Ion Chromatography | The sample is combusted in an oxygen bomb to convert bromine into bromide ions; after absorption in a receiving solution, Br⁻ concentration is measured by ion chromatography. The result is compared with theoretical values to confirm the number of bromine atoms in the molecule (C₇H₈Br₂, theoretical Br content ≈ 47.8%). |
| Solvent Residues | Gas Chromatography (GC) | Use headspace injection or direct injection GC-FID to detect residual organic solvents (e.g., DMF, acetonitrile, toluene), in compliance with ICH Q3C limit requirements. |
| Moisture Content | Karl Fischer Titration | Determine trace moisture in the sample using an iodine-sulfur dioxide-pyridine-methanol system. Suitable for solid organic halides, high precision (down to 0.01%), ensuring product dryness. |
| Melting Point | Capillary Melting Point Apparatus | Accurately measure the melting point range as an auxiliary indicator of purity. Compare with literature values; abnormal melting points may indicate impurities or changes in crystal form. |
| UV-Visible Absorption Spectrum | UV-Vis Spectrophotometry | Determine the maximum absorption wavelength (λmax ≈ 260–280 nm) in ethanol or methanol to qualitatively confirm structural characteristics, assist in identification, and ensure batch consistency comparison. |
| Nitrogen Content Determination | Elemental Analysis (EA) | Determine C, H, N content using combustion-thermal conductivity detection. Compare with theoretical values (C₇H₈Br₂, N content ≈ 11.3%) to verify molecular composition and confirm structure. |
| Heavy Metal Residues | Atomic Absorption Spectroscopy (AAS) or ICP-MS | After sample digestion, detect heavy metal residues such as Pb, Cd, Hg, As, in compliance with pharmaceutical or agrochemical standards (e.g., ICH Q3D), to ensure safety. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 82.0–86.0 °C |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=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 | |
| Pictograms | ![]() |
| Signal Word | Warning |
| Safety Data Sheet | |
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.