Description

cis-1,2,3,4-Cyclopentanetetracarboxylic Dianhydride CAS NO 4802-47-5 is a high-purity, multifunctional cyclic anhydride monomer essential for advanced polymer synthesis. Its unique structure, featuring four reactive anhydride groups, enables the creation of polymers with exceptional thermal stability, mechanical strength, and chemical resistance. This compound is a critical raw material for researchers and manufacturers in the electronics, aerospace, and specialty coatings industries seeking to develop next-generation high-performance materials.

Application

• Polyimide Precursor: A key monomer for synthesizing high-temperature, high-strength polyimide resins and films used in flexible printed circuits (FPCs) and semiconductor insulation layers.
• Epoxy Curing Agent & Modifier: Imparts enhanced heat resistance, rigidity, and adhesion properties to advanced epoxy systems for composites and structural adhesives.
• Specialty Polyester & Alkyd Resins: Used to manufacture resins with improved weatherability and durability for high-performance industrial and automotive coatings.
• Crosslinking Agent: Functions as an efficient crosslinker for polymers containing hydroxyl or amine groups, improving network density and thermal properties.
• Pharmaceutical Intermediate: Serves as a sophisticated building block in the synthesis of complex active pharmaceutical ingredients (APIs) and drug delivery systems.
• Liquid Crystal Polymer (LCP) Synthesis: Employed in the production of high-modulus, high-heat LCPs for precision electronic components and connectors.

Basic Information

Product Name	cis-1,2,3,4-Cyclopentanetetracarboxylic Dianhydride
CAS No.	4802-47-5
Molecular Formula	C9H6O6
Molecular Weight	210.14 g/mol
Synonyms	1,2,3,4-Cyclopentanetetracarboxylic 1,2:3,4-dianhydride; CPDA; Cyclopentane-1,2,3,4-tetracarboxylic dianhydride; cis-Cyclopentanetetracarboxylic dianhydride; 1H,3H-Cyclopenta[1,2-c:3,4-c']difuran-1,3,5,7-tetrone; 1,2,3,4-Cyclopentanetetracarboxylic acid dianhydride; Pyromellitic dianhydride, tetrahydro-
EINECS	225-348-8

Quality Control

Our cis-1,2,3,4-Cyclopentanetetracarboxylic Dianhydride 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 high-end applications. A comprehensive Certificate of Analysis (COA) detailing purity, moisture content, and other critical parameters is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis of the anhydride groups. Use appropriate personal protective equipment when handling.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
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.