Description

Methylhexahydrophthalic Anhydride is a versatile, hydrogenated cycloaliphatic anhydride widely used as a curing agent and chemical intermediate. Its fully saturated ring structure provides exceptional thermal stability, chemical resistance, and low color in final formulations. This product is essential for manufacturers in the epoxy resin, polymer, and specialty chemical industries seeking to enhance the performance and durability of their materials.

Application

• Epoxy Resin Curing Agent: A key hardener for epoxy systems in electrical encapsulation, composites, and coatings, offering excellent mechanical and electrical properties.
• Polymer Modification: Used as a monomer or modifier in the synthesis of alkyd resins, polyesters, and plasticizers to improve flexibility and weathering resistance.
• Chemical Intermediate: Serves in organic synthesis for producing derivatives used in pharmaceuticals, agrochemicals, and corrosion inhibitors.
• Adhesives and Sealants: Imparts high strength and durability to structural adhesives and potting compounds.
• Laminates and Composites: Employed in fiber-reinforced plastics (FRP) for automotive, aerospace, and marine applications.
• Industrial Coatings: Formulates high-performance protective coatings with superior chemical and moisture resistance.

Basic Information

Product Name	Methylhexahydrophthalic Anhydride
CAS No.	25550-51-0
Molecular Formula	C9H12O3
Molecular Weight	168.19 g/mol
Synonyms	Methylhexahydrophthalic Anhydride; Methyl HHPA; 4-Methylhexahydrophthalic Anhydride; 4-Methyl-1,2-cyclohexanedicarboxylic Anhydride; Methyl-1,2-cyclohexanedicarboxylic Anhydride; MHHPA; Methyl Cyclohexane-1,2-dicarboxylic Anhydride; Hexahydro-4-methylphthalic Anhydride
EINECS	247-094-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards and customer specifications. Every batch is analyzed for key parameters including purity, acid value, and color. Certificates of Analysis (COA) are available upon request to provide full traceability and guarantee batch-to-batch consistency for your critical applications.

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); keep containers tightly sealed to prevent absorption of atmospheric moisture which can affect product quality. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Anhydride Content)	≥ 98.0 %
Acid Value	640 - 670 mg KOH/g
Color (Gardner)	≤ 2
Moisture (Karl Fischer)	≤ 0.2 %
Viscosity (25°C)	Contact for details

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