China Factory Direct
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| CAS number | 349-89-3 |
| Product name | Benzenesulfonyl fluoride, 4-chloro- (9CI) |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeReagent 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 |
|---|---|---|
| Pharmaceutical R&D | Protease inhibitors (serine protease inhibitors) | Used in biochemical assays to inhibit serine protease activity and prevent degradation of target proteins |
| Biochemical Research | Enzyme activity study tool | Acts as an irreversible inhibitor by covalently binding to serine residues to investigate enzymatic catalytic mechanisms |
| Analytical Chemistry | Reagent for proteomics sample preparation | Added during protein extraction and purification to prevent proteolysis |
| Organic Synthesis | Synthetic intermediate | Used to construct sulfuryl fluoride-containing compounds for SuFEx (sulfur–fluoride exchange) click chemistry reactions |
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | Gas Chromatography (GC) with FID detection | Quantitative determination based on peak area comparison against a certified reference standard using a non-polar capillary column. |
| Identity Confirmation | Fourier Transform Infrared Spectroscopy (FTIR) | Comparison of characteristic absorption bands (e.g., S=O, C-F, C-Cl) to a reference spectrum. |
| Residual Solvents | Gas Chromatography (GC) with Headspace sampling | Separation and quantification of volatile organic solvents by headspace equilibrium followed by GC-FID analysis. |
| Water Content | Karl Fischer Titration (Coulometric) | Electrochemical titration where iodine generated in situ reacts stoichiometrically with water in the sample. |
| Acidity (as HCl) | Acid-Base Titration with NaOH | Neutralization of acidic impurities (e.g., hydrolyzed HCl) using standardized sodium hydroxide solution and potentiometric endpoint detection. |
| Heavy Metals (as Pb) | Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) | Elemental quantification after acid digestion by measuring atomic emission intensities at characteristic wavelengths. |
| Non-Volatile Residue | Gravimetric Analysis (Weight Loss on Drying) | Determination of residue mass after evaporation of a fixed sample volume under controlled temperature and vacuum. |
| Chloride Impurities | Ion Chromatography (IC) with Conductivity Detection | Separation of anions on an ion-exchange column and quantitative detection via electrical conductivity. |
| Sulfate Impurities | Barium Sulfate Turbidimetry | Precipitation of sulfate as BaSO4 in acidic medium; quantification by measuring turbidity at 420 nm. |
| Appearance | Visual Inspection | Assessment of physical state, color, and clarity against a white background under controlled lighting. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid transition temperature range using calibrated capillary tube method. |
| Specific Optical Rotation | Polarimetry | Measurement of rotation angle of plane-polarized light caused by chiral impurities or degradation products in solution. |
| Test Item | Specification |
|---|---|
| Appearance | Off-white crystalline solid |
| Purity | >=98.0% (GC-MS) |
| Water Content (KF) | <=0.5% |
| Melting Point | 42-46°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Conforms to reference standard |
| Identification (IR) | Conforms to reference standard |
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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.