Description

3,3'-Diamino-4,4'-Dihydroxydiphenyl Sulfone is a high-purity aromatic sulfone derivative featuring both amino and hydroxyl functional groups. This bifunctional structure makes it a valuable specialty chemical intermediate for synthesizing advanced polymers and high-performance materials. It is primarily sought after by manufacturers in the pharmaceutical, polymer, and specialty chemical industries for research and production applications.

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for specialized drug candidates.
• Polymer & Resin Synthesis: Serves as a monomer or cross-linking agent for producing high-performance polyimides, polyamides, and epoxy resins with enhanced thermal and chemical resistance.
• Dye & Pigment Manufacturing: Used in the production of complex organic dyes and pigments, leveraging its aromatic amine structure.
• Liquid Crystal Polymers (LCPs): A potential precursor for high-modulus, temperature-resistant LCPs used in electronics and advanced composites.
• Adhesive & Coating Formulations: Imparts durability and adhesion properties in high-specification industrial coatings and adhesives.
• Chemical Research & Development: Employed as a versatile reagent in organic synthesis and material science R&D for creating novel compounds.

Basic Information

Product Name	3,3'-Diamino-4,4'-Dihydroxydiphenyl Sulfone
CAS No.	7545-50-8
Molecular Formula	C12H12N2O4S
Molecular Weight	280.30 g/mol
Synonyms	4,4'-Sulfonylbis(2-aminophenol); 3,3'-Diaminobisphenol S; Bis(3-amino-4-hydroxyphenyl) Sulfone; DADPS; 2,2'-Dihydroxy-3,3'-diaminodiphenyl Sulfone; 3,3'-DABPS; 4,4'-Dihydroxy-3,3'-diaminodiphenyl Sulfone; BAPS (Bis Aminophenol Sulfone)
EINECS	Contact for details

Quality Control

Our 3,3'-Diamino-4,4'-Dihydroxydiphenyl Sulfone is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for sensitive applications. Certificates of Analysis (COA) documenting purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (typically 15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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