Description

cis-1,2-Cyclohexanedicarboxylic Anhydride is a versatile cyclic anhydride used as a key building block in advanced polymer synthesis and fine chemical manufacturing. Its rigid cyclohexane backbone imparts enhanced thermal stability and mechanical properties to the resulting materials, making it a valuable alternative to aromatic analogs. This high-purity intermediate is essential for producers of epoxy curing agents, polyimide resins, plasticizers, and pharmaceutical active ingredients who require consistent quality and reliable supply chain performance.

Application

• Epoxy Resin Curing Agent: Used as a hardener to produce cured epoxy systems with excellent heat resistance, chemical resistance, and electrical properties for coatings, adhesives, and composites.
• Polyimide Synthesis: Serves as a monomer for manufacturing high-performance polyimide films and engineering plastics used in electronics, aerospace, and automotive applications.
• Alkyd & Polyester Resins: Functions as a modifying agent to improve flexibility, weathering resistance, and durability of surface coatings and paints.
• Plasticizer Intermediate: A precursor for the synthesis of specialty ester-based plasticizers, offering improved compatibility and low volatility in PVC and other polymer formulations.
• Pharmaceutical Synthesis: Employed as a chiral building block and protecting group in the multi-step synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Corrosion Inhibitor Formulations: Used in the production of additives that protect metal surfaces in industrial fluids and coatings.

Basic Information

Product Name	cis-1,2-Cyclohexanedicarboxylic Anhydride
CAS No.	13149-00-3
Molecular Formula	C8H10O3
Molecular Weight	154.16 g/mol
Synonyms	1,2-Cyclohexanedicarboxylic Anhydride, cis-Hexahydrophthalic Anhydride, cis-HHPA, cis-1,2-Cyclohexanedicarboxylic Acid Anhydride, Hexahydro-1,2-benzenedicarboxylic Anhydride, cis-Cyclohexane-1,2-dicarboxylic Anhydride, 1,2,3,4,5,6-Hexahydrophthalic Anhydride
EINECS	236-086-3

Quality Control

Our cis-1,2-Cyclohexanedicarboxylic Anhydride is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and physical properties. Certificates of Analysis (COA) documenting key parameters are provided to guarantee traceability and compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive). Keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can lead to hydrolysis and formation of the corresponding diacid.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	32°C - 36°C
Water Content (KF)	≤ 0.5%
Acid Value	Contact for details

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