4,4'-SULFONYLDIPHENOL Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 46765-03-1 |
| Product name | 4,4'-SULFONYLDIPHENOL |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeIndustrial GradeSpecialty GradeMaterial GradeElectronic 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'-SULFONYLDIPHENOL
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,4'-SULFONYLDIPHENOL Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,4'-SULFONYLDIPHENOL
| Industry | Application | Process |
|---|---|---|
| Plastics | Raw material for epoxy resins and polycarbonates | Used in condensation polymerization |
| Coatings | Intermediate for heat-resistant and corrosion-resistant coatings | Applied in chemical synthesis and crosslinking reactions |
| Dyes | Intermediate for dye and pigment synthesis | Applied in sulfonation and condensation of aromatic compounds |
| Pharmaceuticals | Intermediate for drug synthesis | Applied in organic reactions including sulfonation and acylation |
| Electronic Chemicals | Photosensitive materials and semiconductor encapsulation materials | Applied in preparation of photocurable and thermosetting resins |
| Paper Processing | Developer component in thermal paper coatings | Applied in coating processes and chemical modification |
Manufacturing Quality Control of 4,4'-SULFONYLDIPHENOL
| 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. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content based on the stoichiometric reaction of iodine with water in pyridine-methanol medium. |
| Residue on Ignition | Gravimetric Analysis | Heating sample to 750-800 C to volatilize organic matter; residue weight expressed as percentage of original sample. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomic absorption spectroscopy measuring absorbance of ground-state atoms in flame or graphite furnace after acid digestion. |
| Chloride Impurity | Ion Chromatography (IC) | Separation and quantification of chloride ions on anion-exchange column with conductivity detection. |
| Sulfate Impurity | ICP-OES | Inductively coupled plasma optical emission spectroscopy for simultaneous multi-element detection after microwave-assisted acid digestion. |
| Melting Point | Capillary Melting Point Apparatus | Thermal transition observed visually or automatically as the temperature range over which solid transforms to liquid. |
| Color (APHA) | Visual Comparison or Spectrophotometric Method | Comparison of sample solution color intensity against platinum-cobalt standard solutions or measurement at 455 nm. |
| Organic Volatile Impurities | GC-FID | Gas chromatographic separation followed by flame ionization detection for residual solvents and low-boiling impurities. |
| Acid Value | Acid-Base Titration | Titration with standardized KOH ethanol solution using phenolphthalein indicator to determine free acidic groups. |
| Ash Content | Gravimetric Analysis | Ignition at 500-600 C to oxidize organic material; ash mass determined as percentage of original sample weight. |
| Particle Size Distribution | Laser Diffraction | Measurement of scattered light intensity from dispersed particles to calculate size distribution based on Mie theory. |
Technical Specifications of 4,4'-SULFONYLDIPHENOL
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Melting Point | 123°C - 127°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Residue on Ignition | <=0.1% |
| Heavy Metals | <=10 ppm |
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'-SULFONYLDIPHENOL
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
Packaging of 4,4'-SULFONYLDIPHENOL
Industrial 4,4'-SULFONYLDIPHENOL 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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