Description

Bis(4-Hydroxyphenyl) Sulfone, also known as Bisphenol S, is a high-purity, white crystalline solid widely recognized as a key monomer and intermediate in advanced polymer synthesis. This compound is valued for its excellent thermal stability and chemical resistance, making it a critical component in the production of high-performance materials. It is essential for manufacturers in the polymer, specialty chemical, and electronics industries seeking to enhance product durability and performance under demanding conditions.

Application

• Polymer Synthesis: A primary monomer for producing polysulfones, polyethersulfones (PES), and other high-temperature engineering plastics.
• Epoxy Resin Modifier: Used as a curing agent or co-monomer to improve the thermal and chemical resistance of epoxy resin systems.
• Dye Intermediate: Serves as a crucial building block in the synthesis of certain dyes and colorants.
• Paper Industry: Employed in the manufacturing of specialty papers requiring enhanced wet-strength properties.
• Electronics Encapsulation: Used in formulations for potting and encapsulating electronic components due to its stability.
• Flame Retardant Additive: Acts as a synergist in flame-retardant formulations for various polymers and textiles.

Basic Information

Product Name	Bis(4-Hydroxyphenyl) Sulfone
CAS No.	80-09-1
Molecular Formula	C12H10O4S
Molecular Weight	250.27 g/mol
Synonyms	Bisphenol S; 4,4'-Sulfonyldiphenol; 4,4'-Dihydroxydiphenyl sulfone; DHDPS; Bis(4-hydroxyphenyl)sulphone; Phenol, 4,4'-sulfonylbis-; Bis(p-hydroxyphenyl) sulfone
EINECS	201-250-5

Quality Control

Our Bis(4-Hydroxyphenyl) Sulfone is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and related substances, to meet exacting customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and physical parameters is provided with each shipment to support your quality assurance protocols.

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 and incompatible materials.

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.