Diphenyl sulfone Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 127-63-9 |
| Product name | Diphenyl sulfone |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Agricultural GradePharmaceutical 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 Diphenyl sulfone
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Diphenyl sulfone Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Diphenyl sulfone
| Industry | Application | Process |
|---|---|---|
| Polymers | Monomer and modifier for high-performance engineering plastics such as polysulfone and polyethersulfone | Condensation polymerization, copolymerized with bisphenol A, 4,4'-dichlorodiphenyl sulfone, etc. |
| Pharmaceuticals | Intermediate in the synthesis of antifungal agents (e.g., ketoconazole) | Multistep organic synthesis, including nitration, reduction, and acylation |
| Dyes | Solubilizer and stabilizer for azo and sulfur dyes | Added to the dye bath during dyeing to improve dye dispersion and thermal stability |
| Pesticides | Intermediate in the synthesis of fungicides and insecticides | Participates in nucleophilic substitution or cyclization reactions to construct sulfone-containing heterocyclic structures |
| Electronic Chemicals | Crosslinking regulator for photosensitive resins used in liquid crystal display (LCD) applications | Acts as a thermal crosslinking promoter in photoresist formulations to enhance thermal resistance and resolution |
Manufacturing Quality Control of Diphenyl sulfone
| Test Item | Common Testing Method | Method Description |
|---|---|---|
| Appearance | Visual Inspection | Examine the color and physical state of the sample under natural or standard lighting to determine if it is a white to light yellow crystalline powder, and check for impurities, caking, etc. |
| Melting Point | Melting Point Determination (Capillary Method or Automated Melting Point Instrument) | Gradually heat the sample using a heating apparatus and observe the temperature range from initial melting to complete liquefaction. The pure diphenyl sulfone has a melting point of approximately 127–129°C, which can be used to assess purity. |
| Assay | High-Performance Liquid Chromatography (HPLC) | Use a reversed-phase C18 column with a UV detector (e.g., 254 nm), and methanol-water or acetonitrile-water as the mobile phase. Quantify the main component using external or internal standard method. |
| Related Substances (Impurities) | High-Performance Liquid Chromatography (HPLC) | Same as above; use gradient elution to separate and detect possible organic impurities (such as intermediates, oxidation products, etc.), calculate the area of each impurity peak, and evaluate purity. |
| Loss on Drying | Thermogravimetric Analysis (TGA) or Oven Drying Method | Dry the sample at 105°C until constant weight, then calculate the moisture and volatile content based on the weight difference before and after drying. Typically required to be ≤0.5%. |
| Sulfated Ash | Sulfated Ash Residue Method | After high-temperature incineration of the sample with sulfuric acid treatment, measure the residual inorganic matter to evaluate inorganic impurity content. Generally required to be ≤0.1%. |
| Water Content | Karl Fischer Titration | Use Karl Fischer reagent to quantitatively react with water in the sample. Determine water content by coulometric or volumetric titration; suitable for trace moisture analysis. |
| IR Spectral Identification | Fourier Transform Infrared Spectroscopy (FT-IR) | Prepare the sample as a pellet or thin film, then record its infrared absorption spectrum. Compare characteristic peaks (e.g., S=O stretching vibrations at ~1300 cm⁻¹ and 1150 cm⁻¹) with reference spectra to confirm structural identity. |
| Solubility | Solubility Test | Add a certain amount of sample to specified solvents (e.g., readily soluble in acetone, chloroform; practically insoluble in water) and observe dissolution behavior as an auxiliary identification method. |
Technical Specifications of Diphenyl sulfone
| Test Item | Specification |
|---|---|
| Appearance | White to almost white crystalline powder |
| Purity | >=99.0% (GC-MS) |
| Melting Point | 126.0–128.0°C |
| Water Content (KF) | <=0.5% |
| Total Impurities | <=1.0% |
| Single Impurity | <=0.3% |
| 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 Diphenyl sulfone
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NMR Spectra of Diphenyl sulfone
Packaging of Diphenyl sulfone
Industrial Diphenyl sulfone 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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