Description

3,3'-Sulfonyldianiline CAS NO 599-61-1 is a high-purity aromatic diamine monomer featuring a central sulfone group, which imparts excellent thermal stability and rigidity to resulting polymers. This compound is a critical building block in the synthesis of high-performance polyimides and polyamides, enabling materials that withstand extreme environments. It is essential for manufacturers in the aerospace, electronics, and advanced composites industries seeking to develop heat-resistant resins, adhesives, and insulating films.

Application

• Primary monomer for the synthesis of high-temperature, sulfone-containing polyimides and polyamides.
• Key intermediate in the production of heat-resistant adhesives and sealants for aerospace and automotive applications.
• Building block for advanced epoxy resin curing agents, enhancing thermal and chemical resistance.
• Used in the manufacture of electrical insulation materials, such as wire enamels and flexible circuit boards.
• Intermediate for pharmaceuticals and agrochemicals requiring a rigid, stable diamine core.
• Research and development of novel high-performance polymers and specialty coatings.

Basic Information

Product Name	3,3'-Sulfonyldianiline
CAS No.	599-61-1
Molecular Formula	C12H12N2O2S
Molecular Weight	248.30 g/mol
Synonyms	3,3'-Diaminodiphenyl sulfone; Bis(3-aminophenyl) sulfone; DADPS; 3,3'-DDS; SDDS; 4,4'-Sulfonylbis[benzenamine] (isomer); 1,1'-Sulfonylbis(3-aminobenzene); 3-Aminophenyl sulfone
EINECS	209-967-5

Quality Control

Our 3,3'-Sulfonyldianiline is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for polymer-grade intermediates. Certificates of Analysis (COA) documenting all critical parameters 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, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Melting Point	168 - 172 °C
Loss on Drying	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 1.0%
Heavy Metals	≤ 10 ppm

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