China Factory Direct
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| CAS number | 98-31-7 |
| Product name | 3,4-DICHLOROBENZENESULFONYL CHLORIDE |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradeIndustrial GradeSpecialty Grade |
| Packaging | 25KG/bag500KG/bag1000KG/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 |
|---|---|---|
| Pharmaceutical Intermediates | Synthesis of antibacterial agents and sulfonamide derivatives | Used as a sulfonylation reagent in electrophilic aromatic substitution reactions to construct sulfonamide bonds |
| Pesticide Synthesis | Preparation of chlorobenzenesulfonyl-containing herbicides or insecticides | Condensed with amines or alcohols to introduce the sulfonyl chloride group, enhancing biological activity |
| Dye Industry | Synthesis of sulfonyl chloride intermediates for azo dyes or reactive dyes | Linked to chromophores via nucleophilic substitution to improve dye water solubility and substantivity |
| Organic Synthesis | Construction of C–S bonds or use as a protecting/activating group | Reacted with nucleophiles (e.g., amines, alcohols) under basic conditions to yield corresponding sulfonate esters or sulfonamides |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detector | Quantitative determination based on peak area comparison against a certified reference standard using a non-polar capillary column. |
| Related Substances | Gas Chromatography (GC) with FID detector | Separation and quantification of impurities by retention time and relative response factors versus main component. |
| Residual Solvents | Headspace Gas Chromatography (HS-GC) | Volatile organic solvents are extracted into headspace gas and analyzed by GC-FID or GC-MS. |
| Moisture Content | Karl Fischer Titration (Coulometric mode) | Electrochemical titration where iodine generated coulometrically reacts stoichiometrically with water in the sample. |
| Acid Value | Acid-Base Titration with NaOH standard solution | Neutralization of acidic impurities (e.g., sulfonic acids, HCl) using standardized sodium hydroxide solution and phenolphthalein indicator. |
| Chloride Content | Potentiometric Titration with AgNO3 | Precipitation of chloride ions as AgCl monitored by silver ion-selective electrode to detect endpoint. |
| Heavy Metals (as Pb) | Atomic Absorption Spectroscopy (AAS) | Quantification of total heavy metals after acid digestion by measuring absorbance of ground-state atoms at characteristic wavelengths. |
| Sulfur Content | High-Temperature Combustion followed by UV Fluorescence Detection | Oxidation of organosulfur compounds to SO2, followed by detection via UV-induced fluorescence intensity. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually or automatically as the temperature range at which solid phase converts to liquid. |
| Appearance | Visual Inspection | Assessment of physical state, color, and presence of foreign particles under controlled lighting and against white background. |
| Density | Digital Density Meter (Oscillating U-tube principle) | Measurement of sample density based on resonant frequency shift of a vibrating U-shaped tube filled with sample. |
| Refractive Index | Abbe Refractometer | Determination of refractive index by measuring critical angle of total internal reflection at prism-sample interface. |
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 62-66°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=10 ppm |
| Identification (NMR) | Conforms to reference spectrum |
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| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
| Pictograms | ![]() ![]() |
| Signal Word | Danger |
| 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.