Description

4,4'-Bis(3-Aminophenoxy)Diphenyl Sulfone is a high-purity aromatic diamine monomer with a sulfone linkage, valued for its thermal stability and reactivity. This compound is a critical building block in the synthesis of advanced polymers, particularly high-performance polyimides and polyamides. It is essential for manufacturers in the aerospace, electronics, and specialty plastics industries seeking to produce materials with exceptional heat resistance and mechanical properties.

Application

• Primary monomer for the synthesis of high-temperature polyimide resins and films.
• Key intermediate in the production of epoxy curing agents and toughening agents for advanced composites.
• Building block for polyamide-imides (PAI) and other specialty engineering plastics.
• Used in the formulation of adhesives and coatings for demanding aerospace and automotive applications.
• Precursor for photosensitive polyimides in microelectronics and semiconductor packaging.
• Research and development of novel membrane materials for gas separation.

Basic Information

Product Name	4,4'-Bis(3-Aminophenoxy)Diphenyl Sulfone
CAS No.	30203-11-3
Molecular Formula	C30H24N2O4S
Molecular Weight	508.59 g/mol
Synonyms	BAPS; 4,4'-Bis(3-aminophenoxy)diphenylsulfone; 1,1'-Sulfonylbis[4-(3-aminophenoxy)benzene]; Bis[4-(3-aminophenoxy)phenyl] sulfone; 4,4'-(3-Aminophenoxy)diphenyl sulfone; 3,3'-Diaminodiphenylsulfone diether; BAPS-M
EINECS	Contact for details

Quality Control

Our 4,4'-Bis(3-Aminophenoxy)Diphenyl Sulfone is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for polymer-grade applications. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and impurity profile are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Melting Point	168 - 172 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm

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