Description

2,2'-Di-tert-Butyl-5,5'-Dimethyl[4,4'-Sulfonylbisphenol] is a high-purity, sterically hindered bisphenol derivative featuring a central sulfonyl bridge. This compound matters as a critical advanced polymer intermediate and antioxidant precursor, offering enhanced thermal stability and oxidative resistance to final materials. It is primarily needed by manufacturers in the specialty plastics, high-performance resins, and advanced additive sectors seeking to improve product longevity and performance under demanding conditions.

Application

• Polymer Synthesis: Key monomer for producing high-performance polycarbonates, polysulfones, and polyether sulfones with superior thermal and mechanical properties.
• Antioxidant Manufacturing: Serves as a crucial synthetic precursor for hindered phenol-based antioxidants used in plastics, rubber, and lubricants.
• Stabilizer for Engineering Plastics: Imparts excellent resistance to thermal degradation and oxidation in demanding engineering polymer applications.
• Epoxy Resin Modifier: Used to enhance the thermal stability and toughness of epoxy resin systems for advanced composites and coatings.
• Pharmaceutical Intermediates: Employed in the synthesis of complex organic molecules for pharmaceutical research and development.
• Advanced Material Research: A valuable building block in R&D for novel polymeric materials, dendrimers, and supramolecular structures.

Basic Information

Product Name	2,2'-Di-tert-Butyl-5,5'-Dimethyl[4,4'-Sulfonylbisphenol]
CAS No.	33163-22-3
Molecular Formula	C22H30O4S
Molecular Weight	390.54 g/mol
Synonyms	4,4'-Sulfonylbis(2-tert-butyl-5-methylphenol); Bis(2-tert-butyl-5-methyl-4-hydroxyphenyl) Sulfone; 2,2'-Di-tert-butyl-5,5'-dimethyl-4,4'-sulfonyldiphenol; Phenol, 4,4'-sulfonylbis[2-(1,1-dimethylethyl)-5-methyl-]; Antioxidant 1790; AO-1790; Sulfonylbisphenol Derivative; DTBDMSBP
EINECS	Contact for details

Quality Control

Our production of 2,2'-Di-tert-Butyl-5,5'-Dimethyl[4,4'-Sulfonylbisphenol] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic identification, to ensure compliance with precise specifications. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance and regulatory needs.

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 heat, sparks, and open flame. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided 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	155°C - 165°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.