Description

4,4'-Diaminodiphenylsulfone (CAS NO 80-08-0) is a high-purity aromatic diamine compound that serves as a critical building block in advanced polymer synthesis. Its bifunctional amine structure makes it an essential monomer for producing high-performance materials with exceptional thermal stability and mechanical properties. This chemical is primarily required by manufacturers in the aerospace, electronics, and specialty plastics industries seeking to enhance product durability and performance under demanding conditions.

Application

• Epoxy Curing Agent & Hardener: A key component in formulating high-temperature resistant epoxy resin systems for aerospace composites and electronic encapsulants.
• Polyimide Synthesis: Serves as a fundamental diamine monomer in the production of polyimide films and resins, essential for flexible printed circuits (FPC) and high-temperature insulation.
• High-Performance Thermoplastics: Used in the manufacture of polysulfone and polyethersulfone polymers for medical, automotive, and filtration applications.
• Pharmaceutical Intermediate: Acts as a precursor in the synthesis of certain specialty drugs, including antimicrobial agents.
• Crosslinking Agent: Employed in specialty adhesives and coatings to improve chemical resistance and thermal endurance.
• Research & Development: Utilized in academic and industrial R&D for developing novel polymeric materials and studying reaction mechanisms.

Basic Information

Product Name	4,4'-Diaminodiphenylsulfone
CAS No.	80-08-0
Molecular Formula	C12H12N2O2S
Molecular Weight	248.30 g/mol
Synonyms	Dapsone; DDS; Bis(4-aminophenyl) sulfone; 4,4'-Sulfonyldianiline; 4-Aminophenyl sulfone; DADPS; Avlosulfon; p,p'-Sulfonyldianiline; 1,1'-Sulfonylbis(4-aminobenzene)
EINECS	201-248-4

Quality Control

Our 4,4'-Diaminodiphenylsulfone is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for use in sensitive applications like polyimide synthesis. Certificates of Analysis (COA) are provided with every shipment, detailing key parameters such as assay, melting point, and impurity profiles. We support compliance with relevant industry standards and can provide documentation for regulatory submissions upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and performance. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	175 - 178 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.0%

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