Description

4,4'-Dichlorodiphenyl Sulfone is a high-purity, white to off-white crystalline powder that serves as a critical monomer and intermediate in advanced polymer synthesis. Its primary commercial value lies in its role as a key building block for high-performance engineering plastics, particularly polysulfones and polyethersulfones. This compound is essential for manufacturers in the polymer, specialty chemical, and pharmaceutical industries seeking to produce materials with exceptional thermal stability, chemical resistance, and mechanical strength.

Application

• Primary Monomer for Polysulfone (PSU) and Polyethersulfone (PES) Polymers: The core application, forming the sulfone backbone of these high-temperature, durable engineering thermoplastics used in medical, aerospace, and automotive components.
• Synthesis of Polyarylethersulfone (PAES) Resins: A fundamental monomer for producing a family of amorphous thermoplastics known for excellent hydrolytic stability and flame retardancy.
• Pharmaceutical Intermediate: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and specialty drug compounds.
• Chemical Intermediate for Specialty Dyes and Pigments: Acts as a precursor in the manufacture of high-performance dyes and colorants.
• Production of Ion-Exchange Resins: Serves as a starting material for sulfonated resins used in water purification and catalysis.
• Research & Development: Utilized in academic and industrial R&D for developing novel polymeric materials and organic compounds.

Basic Information

Product Name	4,4'-Dichlorodiphenyl Sulfone
CAS No.	80-07-9
Molecular Formula	C12H8Cl2O2S
Molecular Weight	287.16 g/mol
Synonyms	Bis(4-chlorophenyl) sulfone; 4,4'-Dichlorodiphenylsulfone; DCDPS; 1-Chloro-4-[(4-chlorophenyl)sulfonyl]benzene; Sulfonylbis(4-chlorobenzene); 4-Chlorophenyl sulfone; p,p'-Dichlorodiphenyl sulfone
EINECS	201-247-9

Quality Control

Our 4,4'-Dichlorodiphenyl Sulfone is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for polymer synthesis and pharmaceutical applications. A detailed Certificate of Analysis (COA) documenting identity, purity, and impurity profiles is provided with each shipment. We can support compliance requirements for various pharmacopeial and industrial specifications upon request.

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 heat, sparks, and open flame. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Melting Point	148°C - 152°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 1.0%

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