✏️Basic Information
Name：Diphenyl sulfone
CAS：127-63-9
molecular formula: C₁₂H₁₀O₂S
| Product name | Diphenyl sulfone |
| Synonym | (Benzene, 1,1′-sulfonylbis-;Difenylsulfon;dlphenylsulfone;Phenyl sulphone;phenylsulphone;s-127;s-97;Sulfone, diphenyl |
| CAS NO. | 127-63-9 |
| Appearance | White crystalline powder |
| Purity | 99.5%+ |
| MF | C12H10O2S |
| MW | 218.27 |
| Related categories | Pharmaceuticals, pesticides and dye intermediates; organic chemical raw materials; chemical materials |
| Transport Information | no-dangerous goods |
| HS Code | 2930909099 |
| Application | Used in organic synthesis, it is also used as a plasticizer and a larvicide. |
| Packaging | 25kg/bag;100kg/bag |
| Contact Info | lucy@coreychem.com |
✨Core Properties and Characteristics
Diphenyl sulfone is a crucial high-boiling-point, high-melting-point organic sulfone compound. Its core properties enable it to play a key role across multiple industrial sectors:
Exceptional Thermal and Chemical Stability:
High Melting Point/High Boiling Point: With a melting point of approximately 128°C and a boiling point as high as 379°C. This enables it to remain solid or liquid without decomposition in high-temperature environments.
Chemical Inertness: The sulfonyl group in its structure confers outstanding stability against acids, bases, oxidizing agents, and reducing agents, minimizing side reactions.
Low Volatility: Exhibits minimal vapor pressure even at elevated temperatures, making it suitable for high-temperature systems requiring long-term stability.
Superior Solubility and Solvent Properties:
Broad-Spectrum Solvent: At elevated temperatures (typically >200°C), it serves as an excellent solvent for numerous high-performance engineering plastics (e.g., polyetheretherketone PEEK, polysulfone PSU, polyphenylene sulfide PPS) and dyes.
High Polarity: Possesses strong polarity, effectively dissolving various ionic or polar compounds.
Reaction Medium: Its stability and high boiling point make it an ideal solvent for high-temperature organic synthesis reactions, particularly suitable for polycondensation and Friedel-Crafts reactions requiring harsh conditions.
Material Modification Properties:
Plasticizer/Toughener: As a modifier for high-performance polymers (especially polysulfones), it enhances processability, flexibility, and toughness without significantly compromising heat resistance.
Crystallization Promoter: In certain polymer processing, it functions as a nucleating agent or crystallization regulator, improving material crystallinity and mechanical properties.
📌 Primary Applications
Leveraging the aforementioned properties, diphenyl sulfone finds concentrated application in high-end manufacturing sectors:
Key Raw Material and Processing Aid for Engineering Plastics:
Synthesis Solvent for Polyetheretherketone (PEEK): Serves as the primary reaction solvent for producing top-tier specialty engineering plastic PEEK. Its high-temperature stability and dissolution capability are critical for PEEK polymerization.
Modifier for Polysulfone Plastics: Serves as a plasticizer and processing aid for materials like polysulfone and polyethersulfone, enhancing their thermoforming properties.
High-Temperature Reaction Solvent:
Used in high-temperature synthesis reactions for fine chemicals including pharmaceutical intermediates, pesticides, and dyes.
Specialty Chemical Intermediates:
Can be used to synthesize other sulfonyl compounds, pharmaceutical intermediates (e.g., certain sulfonamide drug derivatives), and electrochemical materials.
Electronics and Energy Sector:
Serves as an additive or component in high-temperature battery electrolytes (e.g., certain molten salt batteries), enhancing thermal stability and ionic conductivity.
Formulated into specialty thermal interface materials or insulating materials.
Dye and Pigment Industry:
Functions as a carrier or dispersant for high-temperature dyeing processes.
🚢Packaging and Transportation Conditions
Diphenyl sulfone is chemically stable and not classified as a hazardous material. However, standardized handling procedures must be followed to ensure product integrity and safety.
1. Packaging Specifications:
Common Packaging: 25 kg/bag in multi-layer composite paper bags or cardboard drums, lined with plastic film (e.g., polyethylene bags) for moisture protection.
Large-Capacity Packaging: 500 kg/bag or 1000 kg/bag in FIBCs (ton bags), also requiring an inner moisture-proof lining.
Requirements: Packaging must be sealed and moisture-proof to prevent moisture absorption, caking, or contamination during storage and transportation.
2. Storage Conditions:
Environment: Store in a cool, dry, well-ventilated warehouse.
Isolation: Keep away from heat sources and open flames. Store separately from strong oxidizing agents.
Management: Maintain container seals to prevent moisture absorption and dust generation.
3. Export Transportation Conditions:
Hazard Classification: Typically classified under GHS standards as:
Non-hazardous goods or only presenting minor hazards.
Health Hazards: May cause minor irritation to eyes and skin (Category 2).
Environmental Hazards: May pose long-term persistent hazards to aquatic environments (subject to specific data).
UN Number: No UN number required. Transported as a non-dangerous chemical.
Packing Group: Non-restricted goods; no packing group requirements.
Transport Documents: Commercial invoice, packing list, bill of lading, and non-hazardous MSDS compliant with destination country requirements must be provided.
Transport Labels: No hazardous labels required, but operational labels such as “Keep Dry” and “This Side Up” are recommended.
Contact Info：lucy@coreychem.com
