4,4'-Bis(chlorosulfonyl)diphenyl ether Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 121-63-1 |
| Product name | 4,4'-Bis(chlorosulfonyl)diphenyl ether |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeElectronic GradeMaterial 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) |
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Documents We Provide for 4,4'-Bis(chlorosulfonyl)diphenyl ether
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,4'-Bis(chlorosulfonyl)diphenyl ether Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,4'-Bis(chlorosulfonyl)diphenyl ether
| Industry | Application | Process |
|---|---|---|
| Polymers | Monomer for synthesizing polysulfone engineering plastics (e.g., polyethersulfone, polyphenylsulfone) | Condensation polymerization with dihydric phenols (e.g., bisphenol A or 4,4'-dihydroxydiphenyl sulfone) under alkaline conditions |
| Pharmaceutical Intermediates | Precursor for synthesizing sulfonamide-based drugs and antimicrobial agents | Aminolysis or ammonolysis to yield corresponding sulfonamide derivatives |
| Dyes and Pigments | Coupling component or modifying additive for reactive dyes and functional pigments | Nucleophilic substitution reaction of the sulfonyl chloride group with amino- or hydroxyl-containing dye molecules to introduce sulfone bridge structures |
| Electronic Chemicals | Used in formulating high-temperature-resistant, high-dielectric photolithographic resins and encapsulation materials | Participates in copolymerization or crosslinking reactions to construct thermosetting resin systems containing sulfone linkages |
Manufacturing Quality Control of 4,4'-Bis(chlorosulfonyl)diphenyl ether
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantification using reverse-phase HPLC with UV detection at 254 nm, comparing peak area to a certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content based on the reaction of iodine with sulfur dioxide in a methanol-pyridine solvent system. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 700-800 C to combust organic matter, then weighing inorganic residue as percentage of original mass. |
| Heavy Metals (as Pb) | ICP-OES | Multi-element quantification after acid digestion, using plasma excitation and optical emission spectroscopy. |
| Chloride Impurities | Potentiometric Titration | Titration with silver nitrate using a silver indicator electrode to detect endpoint via potential change. |
| Acid Value | Acid-Base Titration | Neutralization of acidic impurities with standardized NaOH solution using phenolphthalein indicator. |
| Melting Point | Capillary Melting Point Apparatus | Determination of solid-to-liquid transition temperature using calibrated capillary tube method per USP <741>. |
| Organic Volatile Impurities | GC-FID | Separation and quantification of residual solvents using gas chromatography with flame ionization detection. |
| Sulfate Impurities | Barium Sulfate Gravimetry | Precipitation of sulfate as BaSO4 in acidic medium followed by filtration, drying, and weighing. |
| Color (APHA) | Visual Comparison or Spectrophotometry | Measurement of yellowness index by matching sample color to APHA platinum-cobalt standards or absorbance at 430 nm. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine volume-based particle size distribution. |
| Bulk Density | Graduated Cylinder Method | Mass of material freely poured into a known volume cylinder, expressed as g/mL. |
Technical Specifications of 4,4'-Bis(chlorosulfonyl)diphenyl ether
| Test Item | Specification |
|---|---|
| Appearance | White crystalline solid |
| Purity | >=98.0% |
| Melting Point | 148–152°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Identification (NMR) | Consistent with structure |
| Identification (IR) | Consistent with structure |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of 4,4'-Bis(chlorosulfonyl)diphenyl ether
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4,4'-Bis(chlorosulfonyl)diphenyl ether
Safety Information of 4,4'-Bis(chlorosulfonyl)diphenyl ether
| Pictograms |  |
| Signal Word | Danger |
| Safety Data Sheet | |
Packaging of 4,4'-Bis(chlorosulfonyl)diphenyl ether
Industrial 4,4'-Bis(chlorosulfonyl)diphenyl ether Procurement FAQ
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.
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