China Factory Direct
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| CAS number | 52431-30-8 |
| Product name | 2,5-DIBROMO-3,4-DINITROTHIOPHENE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty 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 |
|---|---|---|
| Pesticide Manufacturing | Used as a synthetic intermediate for pesticide production | Prepared via organic synthesis methods such as substitution reactions |
| Pharmaceutical Chemicals | Used in the synthesis of pharmaceutical intermediates | Applied under controlled conditions to enable selective reactions that construct complex molecular frameworks |
| Dye Industry | Potentially used in the synthesis of certain specialty dyes or pigments | Converted into target colorants through a sequence of chemical reactions |
| Fine Chemicals | Serves as a precursor for fine chemicals | Transformed into final products via tailored chemical conversion pathways, depending on end-product specifications |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 254 nm, calibrated against certified reference standard. |
| Related Substances | HPLC-UV | Separation and quantification of impurities using gradient HPLC-UV, based on relative response factors or external standardization. |
| Residual Solvents | GC-FID | Headspace GC with flame ionization detection to quantify common organic solvents (e.g., acetone, methanol, DMF) per ICH Q3C. |
| Moisture Content | Karl Fischer Titration | Volumetric or coulometric titration using iodine-based reagent to determine water content by stoichiometric reaction. |
| Heavy Metals | ICP-OES | Multi-element detection after acid digestion, measuring total heavy metals (Pb, Cd, Hg, As) against USP <231> or ICH Q2(R2) limits. |
| Chloride Impurity | Ion Chromatography | Separation and quantification of chloride ions using suppressed conductivity detection after aqueous extraction. |
| Sulfate Impurity | Ion Chromatography | Quantification of sulfate ions via suppressed conductivity detection following sample dissolution and filtration. |
| Melting Point | Capillary Melting Point Apparatus | Determination of temperature range at which solid transitions to liquid, using calibrated digital apparatus per USP <741>. |
| Particle Size Distribution | Laser Diffraction | Measurement of size distribution in dispersed dry powder using Mie scattering theory and standardized dispersion protocols. |
| Bulk Density | ASTM D1895 | Determination of mass per unit volume for freely settled powder using a calibrated graduated cylinder and standard tapping procedure. |
| Loss on Drying | Gravimetric Analysis | Weight loss measured after drying under controlled temperature and vacuum, indicating volatile and moisture content. |
| Residue on Ignition | Gravimetric Analysis | Mass of non-volatile inorganic residue remaining after high-temperature ashing, indicating inorganic impurities. |
| Test Item | Specification |
|---|---|
| Appearance | Pale-yellow crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Melting Point | 142–146 °C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| 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.