Description

1,2,3,6-Tetrahydro-4-Methylphthalic Anhydride is a versatile cyclic anhydride derivative with a partially hydrogenated aromatic structure. This compound is a valuable chemical intermediate prized for its reactivity, enabling the synthesis of advanced materials and fine chemicals. It is primarily sought after by manufacturers in the polymer, pharmaceutical, and specialty chemical industries for applications requiring high-purity building blocks.

Application

• Epoxy Resin Curing Agent: Acts as a reactive intermediate or hardener component in the formulation of specialized epoxy resin systems.
• Polymer Modification: Used to introduce functional anhydride groups into polymer chains for property enhancement, such as improved adhesion or thermal stability.
• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Fine Chemical Synthesis: Employed in the production of dyes, pigments, plasticizers, and other high-value specialty chemicals.
• Crosslinking Agent: Utilized in coatings, adhesives, and composite materials to create crosslinked polymer networks.
• Research & Development: A valuable reagent for academic and industrial R&D in organic chemistry and material science.

Basic Information

Item	Details
Product Name	1,2,3,6-Tetrahydro-4-Methylphthalic Anhydride
CAS No.	3425-89-6
Molecular Formula	C9H10O3
Molecular Weight	166.17 g/mol
Synonyms	4-Methyl-1,2,3,6-tetrahydrophthalic anhydride; 4-Methyl-δ4-tetrahydrophthalic anhydride; 4-Methyl-4-cyclohexene-1,2-dicarboxylic anhydride; 4-Methyl-1-cyclohexene-1,2-dicarboxylic anhydride; 3-Methyl-3,6-epoxy-δ4-tetrahydrophthalic anhydride; MTHPA (common abbreviation); 4-Methyl-HHPA
EINECS	222-320-1

Quality Control

Our 1,2,3,6-Tetrahydro-4-Methylphthalic Anhydride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting these results are available for every shipment to support your quality assurance protocols.

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); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (Anhydride Content)	≥ 98.0%
Melting Point	65 - 75 °C
Water Content (KF)	≤ 0.5%

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