Description

4,4'-Dihydroxy Diphenyl Sulfone is a high-purity organic compound belonging to the class of sulfones, characterized by its two phenolic hydroxyl groups. This chemical serves as a versatile and critical intermediate in advanced polymer synthesis and specialty chemical manufacturing. It is essential for industries requiring high-performance materials, such as engineering plastics, epoxy resins, and specialty coatings.

Application

• Polymer Intermediate: A key monomer for synthesizing high-performance polysulfone (PSU) and polyethersulfone (PES) resins, valued for their thermal stability and mechanical strength.
• Epoxy Resin Modifier: Used as a curing agent or cross-linking modifier to enhance the thermal and chemical resistance of epoxy systems for composites and adhesives.
• Dye & Pigment Manufacturing: Acts as an intermediate in the production of certain high-grade dyes and organic pigments.
• Pharmaceutical Synthesis: Serves as a building block in the synthesis of specific active pharmaceutical ingredients (APIs) and drug candidates.
• Specialty Additives: Utilized in the formulation of antioxidants, stabilizers, and other functional additives for plastics and coatings.
• Research & Development: Employed in academic and industrial R&D for developing novel polymeric materials and organic compounds.

Basic Information

Product Name	4,4'-Dihydroxy Diphenyl Sulfone
CAS No.	170275-06-6
Molecular Formula	C12H10O4S
Molecular Weight	250.27 g/mol
Synonyms	Bisphenol S; 4,4'-Sulfonyldiphenol; 4,4'-Dihydroxydiphenyl sulfone; Bis(4-hydroxyphenyl) sulfone; 4-Hydroxyphenyl sulfone; DHDPS; BPS; Phenol, 4,4'-sulfonylbis-
EINECS	Contact for details

Quality Control

Our 4,4'-Dihydroxy Diphenyl Sulfone is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets stringent specifications for industrial and fine chemical applications. Certificates of Analysis (COA) with detailed batch-specific results are provided to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is easily oxidized and should be kept under an inert atmosphere for long-term storage. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	245 - 250 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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