Description

3,3,4,4-Diphenylsulfonetetracarboxylicdianhydride is a high-purity, specialized aromatic dianhydride monomer critical for advanced polymer synthesis. Its unique sulfone and anhydride functionalities make it an essential building block for creating high-performance materials with exceptional thermal stability and mechanical properties. This compound is primarily sought by manufacturers in the electronics, aerospace, and specialty plastics industries for developing polyimides, polyamides, and other high-temperature engineering polymers.

Application

• High-Performance Polyimide Synthesis: A key monomer for producing polyimide resins and films with outstanding thermal, mechanical, and dielectric properties, used in flexible printed circuits (FPCs) and semiconductor coatings.
• Advanced Polyamide Production: Serves as a precursor for thermally stable polyamides applied in aerospace components and automotive under-the-hood parts.
• Epoxy Curing Agent & Modifier: Used to enhance the heat resistance and mechanical strength of epoxy resin systems for advanced composites.
• Liquid Crystal Polymer (LCP) Manufacturing: An important intermediate in the synthesis of LCPs for high-precision electronic connectors and components.
• Gas Separation Membranes: Incorporated into polymer membranes for gas separation processes due to the rigid polymer backbone it helps form.
• Photoresist Materials: Used in the development of photosensitive polyimides for microelectronics and display technologies.
• Adhesives and Coatings: Imparts high-temperature stability and chemical resistance to specialty adhesives and protective coatings.
• Academic & Industrial R&D: A valuable reagent for research into novel polymer architectures and material science.

Basic Information

Product Name	3,3,4,4-Diphenylsulfonetetracarboxylicdianhydride
CAS No.	2540-99-0
Molecular Formula	C22H10O8S
Molecular Weight	434.38 g/mol
Synonyms	DSDA; 4,4'-(Sulfonylbis(1,2-phenylene))bis(1,3-dioxo-1,3-dihydroisobenzofuran-5-carboxylic acid) dianhydride; 3,3',4,4'-Diphenylsulfonetetracarboxylic dianhydride; 4,4'-Oxydiphthalic dianhydride sulfone derivative; Bis(3,4-dicarboxyphenyl) sulfone dianhydride; BPSS; ODPA-SO2; Tetracarboxylic dianhydride monomer
EINECS	219-816-5

Quality Control

Our 3,3,4,4-Diphenylsulfonetetracarboxylicdianhydride is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity, essential for sensitive polymerization processes. All products undergo rigorous quality testing, including advanced chromatographic analysis, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing 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, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity. Keep away from strong bases and moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Chloride (Cl)	≤ 50 ppm
Sulfate (SO4)	≤ 100 ppm
Related Substances (HPLC)	Total impurities ≤ 1.0%

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