Description

Cyclobutane-1,2,3,4-Tetracarboxylic Dianhydride CAS NO 4415-87-6 is a high-purity, multifunctional cyclic anhydride monomer of significant industrial importance. This compound serves as a critical building block for the synthesis of advanced polymers and specialty chemicals, offering exceptional thermal stability and reactivity. It is essential for manufacturers in the electronics, aerospace, and high-performance materials sectors seeking to develop polyimides, epoxy curing agents, and other engineered resins.

Application

• Polyimide Synthesis: A key monomer for producing high-temperature, high-strength polyimide films and resins used in flexible printed circuits (FPCs), semiconductor coatings, and aerospace components.
• Epoxy Curing Agent/Modifier: Imparts enhanced thermal resistance, mechanical strength, and chemical stability to epoxy resin systems for advanced composites and adhesives.
• Specialty Polymer Crosslinker: Used to modify and crosslink polymers like polyesters and polyamides to improve their thermal and mechanical properties.
• Pharmaceutical Intermediate: Serves as a sophisticated precursor in the synthesis of complex active pharmaceutical ingredients (APIs) and diagnostic agents.
• Liquid Crystal Polymers (LCPs): A valuable monomer for creating LCPs with superior performance for electronics and precision molding applications.
• Research & Development: Employed in academic and industrial R&D for developing novel materials with tailored properties.

Basic Information

Product Name	Cyclobutane-1,2,3,4-Tetracarboxylic Dianhydride
CAS No.	4415-87-6
Molecular Formula	C8H4O6
Molecular Weight	196.11 g/mol
Synonyms	1,2,3,4-Cyclobutanetetracarboxylic 1,2:3,4-dianhydride; CBDA; Cyclobutane-1,2,3,4-tetracarboxylic acid dianhydride; 1,2,3,4-Cyclobutanetetracarboxylic dianhydride; Pyromellitic dianhydride, tetrahydro-; Tetrahydro-1,2,4,5-benzenetetracarboxylic dianhydride; 1,2,3,4-Tetracarboxycyclobutane dianhydride
EINECS	224-567-7

Quality Control

Our Cyclobutane-1,2,3,4-Tetracarboxylic 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 exacting specifications for high-performance applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept sealed under a dry inert atmosphere (e.g., nitrogen or argon) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.5%
Melting Point	285 - 295 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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