Description

O,O'-Sulphonylbisphenol is a high-purity organic chemical intermediate characterized by its sulfonyl-linked bisphenol structure. This compound is valued for its role as a key building block in the synthesis of advanced polymers and specialty chemicals, offering enhanced thermal stability and structural integrity. It is primarily sought by manufacturers in the polymer, epoxy resin, and high-performance material sectors for developing products with superior mechanical and thermal properties.

Application

• Polymer Intermediate: A crucial monomer for the synthesis of polyethersulfones (PES), polysulfones (PSU), and other high-performance engineering thermoplastics.
• Epoxy Resin Modifier: Used to enhance the thermal stability, chemical resistance, and mechanical strength of advanced epoxy resin systems.
• Flame Retardant Synergist: Incorporated into formulations to improve the flame-retardant efficacy of materials in electronics and construction.
• Specialty Chemical Synthesis: Serves as a precursor for creating sulfonated compounds used in ion-exchange resins and membrane materials.
• Adhesive & Coating Formulations: Imparts durability and heat resistance to high-performance industrial adhesives and protective coatings.
• Pharmaceutical Intermediate: Employed in the research and development of certain active pharmaceutical ingredients (APIs) requiring a sulfonyl-bridged aromatic core.

Basic Information

Product Name	O,O'-Sulphonylbisphenol
CAS No.	15038-67-2
Molecular Formula	C12H10O4S
Molecular Weight	250.27 g/mol
Synonyms	4,4'-Sulfonyldiphenol; Bisphenol S; 4,4'-Dihydroxydiphenyl sulfone; 4,4'-Sulfonylbis(phenol); Bis(4-hydroxyphenyl) sulfone; DHDPS; BPS; 4,4'-Sulfonylbisphenol
EINECS	239-123-3

Quality Control

Our O,O'-Sulphonylbisphenol is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, melting point, and impurity profiles. Our quality protocols are designed to meet the stringent requirements of industrial and research applications, ensuring reliable performance in your formulations.

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). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
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.