Diphenylsulfone CAS No.127-63-9

Product name Diphenylsulfone
CAS No. 127-63-9
Purity 99%min
pack 25kgs/bag
Output 100mt/month

Applications and Uses

Diphenylsulfone’s robust solvency and thermal endurance enable its integration into diverse sectors, including:

  • Polymer Processing: Primary high-temperature solvent for synthesizing and extruding engineering plastics like polyether ether ketone (PEEK), polyphenylene sulfide (PPS), and polysulfones, facilitating melt processing above 300°C.
  • Pharmaceutical Synthesis: Employed as an intermediate in producing antibacterial and anti-infective drugs, leveraging its stability for reaction media in multi-step organic transformations.
  • Thermal Paper Coatings: Functions as a sensitizer in non-impact printing technologies, enhancing image development speed and contrast in fax and receipt papers.
  • Agrochemicals: Utilized as an ovicide and acaricide in crop protection formulations, targeting mite and egg control in agriculture.
  • Specialty Chemicals: Serves in deoxygenation reactions, dye intermediates, and as a reaction medium for cross-linking agents in adhesives and composites.

Its eco-compatible profile, with low bioaccumulation potential, supports sustainable manufacturing in polymer and pharmaceutical industries.

Safety and Handling

Diphenylsulfone is generally low in acute toxicity but can cause irritation and is harmful if ingested. It is not flammable under normal conditions but may release sulfur oxides upon thermal decomposition. Key guidelines include:

  • Storage: Keep in a cool, dry, well-ventilated area at room temperature in sealed containers; protect from moisture and strong oxidizers.
  • Handling: Use PPE such as gloves, goggles, and dust masks to prevent skin/eye contact or inhalation. Wash thoroughly after use; avoid ingestion.
  • Environmental Impact: Low mobility in soil; biodegradable under aerobic conditions. Dispose via incineration or approved chemical waste facilities to prevent release.
  • Regulatory Compliance: Complies with REACH, TSCA, and GHS (H302: Harmful if swallowed; H315/H319: Skin/eye irritant).

Request the Safety Data Sheet (SDS) for full hazard communication.

Frequently Asked Questions (FAQs)

What is the primary use of Diphenylsulfone?

Diphenylsulfone is mainly used as a high-temperature solvent in the production of high-performance polymers like PEEK and PPS, enabling processing at temperatures exceeding 300°C without degradation.

Is Diphenylsulfone safe for industrial applications?

It is considered low-hazard with proper handling, causing mild irritation but no significant flammability risks. Standard industrial hygiene practices suffice for safe use.

What is the shelf life of Diphenylsulfone?

Stored in sealed, dry conditions at room temperature, Diphenylsulfone remains stable for 3-5 years, with no notable loss in purity or solvency.

Can Diphenylsulfone be shipped internationally?

Yes, it is shipped worldwide in compliance with IATA, IMDG, and DOT standards, available in packaging from 1 kg bags to bulk drums for various scales.

How does Diphenylsulfone compare to dimethyl sulfoxide (DMSO)?

Unlike DMSO, which is more volatile and suitable for lower temperatures, Diphenylsulfone offers superior thermal stability for ultra-high-temperature reactions, though it has lower polarity and solubility in water.

Is Diphenylsulfone environmentally friendly?

It exhibits low toxicity to aquatic life and is readily biodegradable, making it a greener alternative to some traditional high-boiling solvents in polymer applications.

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