Description

1,2,4,5-Cyclohexanetetracarboxylic Dianhydride is a high-purity, multifunctional cyclic anhydride monomer essential for advanced polymer synthesis. Its rigid, symmetrical structure and four reactive anhydride groups make it a critical building block for creating materials with exceptional thermal stability and mechanical properties. This compound is primarily sought by R&D and production teams in the specialty polymers, electronics, and advanced coatings industries.

Application

• Polyimide Precursor: A key monomer for synthesizing high-performance, thermally stable polyimide resins and films used in flexible printed circuits (FPCs) and aerospace components.
• Epoxy Curing Agent & Modifier: Imparts enhanced heat resistance, chemical resistance, and rigidity to epoxy resin systems for advanced composites and adhesives.
• Synthesis of Polyester and Alkyd Resins: Used to create specialty resins with improved hardness and durability for high-end industrial coatings.
• Pharmaceutical Intermediate: Serves as a sophisticated building block in the multi-step synthesis of complex active pharmaceutical ingredients (APIs).
• Crosslinking Agent: Effective crosslinker for polymers containing hydroxyl or amine groups, enhancing network density and performance.
• Research & Development: Utilized in academic and industrial labs for developing novel dendritic polymers, hyperbranched polymers, and other advanced macromolecular architectures.

Basic Information

Product Name	1,2,4,5-Cyclohexanetetracarboxylic Dianhydride
CAS No.	2754-41-8
Molecular Formula	C10H8O6
Molecular Weight	224.17 g/mol
Synonyms	1,2,4,5-Benzenetetracarboxylic Dianhydride, Hydrogenated; Cyclohexane-1,2,4,5-tetracarboxylic Dianhydride; Pyromellitic Dianhydride, Hydrogenated; H-PMDA; 1,2,4,5-Cyclohexanetetracarboxylic Acid Dianhydride; Tetrahydrophthalic Anhydride (specific isomer); CHTA
EINECS	220-391-5

Quality Control

Our 1,2,4,5-Cyclohexanetetracarboxylic Dianhydride is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR, to ensure it meets precise specifications for high-end applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment and is available upon request.

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 material is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent hydrolysis of the anhydride groups. Keep away from strong bases and amines.

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.