Description

4,4'-Sulfonylbis(2-Bromophenol) is a high-purity brominated phenolic compound featuring a sulfonyl bridge, serving as a versatile and critical chemical intermediate. Its unique structure makes it valuable for synthesizing advanced materials with specific thermal, mechanical, or optical properties. This product is essential for R&D chemists and manufacturers in the polymer, pharmaceutical, and specialty chemical industries seeking to develop novel high-performance polymers, flame retardants, or active pharmaceutical ingredients (APIs).

Application

• Polymer Synthesis: A key monomer for producing high-performance engineering plastics, such as poly(arylene ether sulfone)s (PAES) and other specialty polymers requiring enhanced thermal stability and flame retardancy.
• Flame Retardant Intermediate: Used in the synthesis of brominated flame retardant additives for thermoplastics, textiles, and epoxy resin systems.
• Pharmaceutical Intermediate: Serves as a building block in the research and development of novel active pharmaceutical ingredients (APIs), particularly those with sulfone or diaryl ether motifs.
• Liquid Crystal & OLED Materials: Acts as a precursor in the synthesis of advanced organic electronic materials, including liquid crystal monomers and host materials for organic light-emitting diodes (OLEDs).
• Crosslinking Agent: Utilized as a crosslinker or chain extender in the formulation of high-temperature resistant resins and coatings.
• Agrochemical Synthesis: Employed as an intermediate in the development of new agrochemicals, such as herbicides and fungicides.

Basic Information

Product Name	4,4'-Sulfonylbis(2-Bromophenol)
CAS No.	56486-79-4
Molecular Formula	C12H8Br2O4S
Molecular Weight	432.07 g/mol
Synonyms	2,2'-Dibromo-4,4'-sulfonyldiphenol; Bis(2-bromo-4-hydroxyphenyl) sulfone; 4,4'-Sulfonyldi(2-bromophenol); Phenol, 2,2'-dibromo-4,4'-sulfonyldi-; 2-Bromophenol, 4,4'-sulfonylbis-; 4,4'-(Sulfonylbis(2-bromo-1,4-phenylene))diol
EINECS	Contact for details

Quality Control

Our 4,4'-Sulfonylbis(2-Bromophenol) is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for advanced synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee supply consistency and traceability for your critical processes.

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 incompatible materials such as strong oxidizing agents and bases. For long-term storage, consider an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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