China Factory Direct
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| CAS number | 92748-09-9 |
| Product name | 2-Bromobenzenesulfonamide |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeMaterial 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 |
|---|---|---|
| Pharmaceuticals | Intermediate for antibacterial agents, used in the synthesis of benzothiazine antibiotics and antitubercular compounds | Functions as a key brominated aryl sulfonamide structural unit in nucleophilic substitution or palladium-catalyzed cross-coupling reactions |
| Agrochemicals | Intermediate for insecticides and fungicides, used to construct bioactive molecules containing a brominated benzenesulfonamide scaffold | Prepared via sulfonation and bromination steps to produce target agrochemicals, such as novel sulfonamide-based insecticides |
| Materials Science | Synthetic precursor for hole-transport materials in organic light-emitting diodes (OLEDs) | Integrated with conjugated groups via Suzuki or Heck coupling to build thermally stable, high-mobility aromatic sulfonamide functional materials |
| Test Item | Common Testing Method | Method Overview |
|---|---|---|
| Appearance | Visual Inspection | Observe the sample's color and physical state (typically white to off-white crystalline powder) to determine if it meets the specified requirements. |
| Identification | Infrared Spectroscopy (IR) | Compare the infrared absorption spectrum with a reference spectrum to confirm characteristic functional groups (e.g., sulfonylamine group, aromatic ring, C–Br bond). |
| Proton Nuclear Magnetic Resonance (¹H NMR) | Analyze chemical shifts and coupling patterns of hydrogen atoms to verify molecular structure. | |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column and UV detector (e.g., 254 nm); quantify the main component using external standard or area normalization method. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Using the same conditions as for assay or gradient elution, separate and quantify potential impurities (e.g., unreacted starting materials, by-products, degradation products). |
| Melting Point | Melting Point Apparatus | Determine the melting temperature range and compare with literature values (approximately 130–134 °C) to assess purity. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Constant Temperature Drying Method | Dry the sample at a specified temperature (e.g., 105 °C) to constant weight, then calculate the mass loss to evaluate moisture and volatile impurity content. |
| Sulfated Ash (Residue on Ignition) | High-Temperature Incineration Method | Weigh the inorganic residue remaining after incinerating the sample at high temperature (e.g., 700–800 °C) to control levels of inorganic impurities. |
| Water Content | Karl Fischer Titration | Determine water content using volumetric or coulometric Karl Fischer method; suitable for compounds sensitive to moisture. |
| Residual Solvents | Gas Chromatography (GC) | Use headspace or direct injection to detect organic solvents possibly remaining from synthesis or purification (e.g., methanol, dichloromethane). |
| Heavy Metals | Atomic Absorption Spectroscopy (AAS) or Inductively Coupled Plasma Mass Spectrometry (ICP-MS) | Detect residual heavy metal elements such as lead, cadmium, mercury, and arsenic to ensure compliance with pharmacopoeial or regulatory limits. |
| Test Item | Specification |
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| Appearance | Off-white crystalline solid |
| Purity | >=98.5% (by LC-MS) |
| Melting Point | 142–146 °C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=10 ppm |
| 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.