Description

4,4'-Diphenoxydiphenylsulfone is a high-performance sulfone-based chemical intermediate known for its excellent thermal stability and chemical resistance. This compound is a critical building block in the synthesis of advanced polymers and specialty materials, offering superior performance under demanding conditions. It is primarily utilized by manufacturers in the polymer, electronics, and specialty chemical industries seeking to enhance the properties of their high-end products.

Application

• Polymer Synthesis: A key monomer for producing high-performance polysulfone (PSU) and polyethersulfone (PES) resins, which are used in medical devices, aerospace components, and automotive parts.
• Engineering Plastics: Serves as a precursor for engineering thermoplastics that require high heat deflection temperatures, toughness, and flame retardancy.
• Membrane Technology: Used in the manufacture of ultrafiltration and gas separation membranes due to the resulting polymer's durability and chemical resistance.
• Electronic Encapsulation: Employed in the production of encapsulants and potting compounds for electronic components that must withstand high temperatures and harsh environments.
• Adhesives & Coatings: Imparts thermal stability and strength to high-temperature adhesives, protective coatings, and composite matrices.
• Chemical Intermediate: Functions as a versatile building block in organic synthesis for pharmaceuticals and agrochemicals.

Basic Information

Product Name	4,4'-Diphenoxydiphenylsulfone
CAS No.	1623-91-2
Molecular Formula	C24H18O4S
Molecular Weight	402.46 g/mol
Synonyms	Bis(4-phenoxyphenyl) sulfone; 4,4'-Diphenoxy diphenyl sulfone; DPS; 1,1'-Sulfonylbis[4-phenoxybenzene]; 4-Phenoxyphenyl sulfone; 4,4'-Diphenoxydiphenyl sulphone; 4,4'-DPS; 4,4'-Bis(phenoxy)diphenylsulfone
EINECS	Contact for details

Quality Control

Our 4,4'-Diphenoxydiphenylsulfone is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for polymer-grade applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 99.0%
Melting Point	164 - 168 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.