Description

5-Methylisopthalic Acid Dimethylester is a high-purity diester derivative of isophthalic acid, serving as a versatile and valuable chemical intermediate. Its core value lies in providing a reactive platform for the synthesis of advanced polymers, liquid crystals, and fine chemicals, enabling precise molecular design and functionalization. This compound is essential for R&D chemists and production engineers in the pharmaceutical, advanced materials, and specialty polymer industries seeking to develop novel products with tailored properties.

Application

• Polymer & Resin Synthesis: A key monomer or intermediate for producing high-performance polyesters, polyamides, and coating resins, contributing to thermal stability and mechanical strength.
• Liquid Crystal Manufacturing: Used in the synthesis of liquid crystal compounds for display technologies (LCDs) and optical devices.
• Pharmaceutical Intermediates: Serves as a building block in the multi-step synthesis of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Organic Synthesis & Fine Chemicals: Acts as a versatile precursor for further chemical transformations, including hydrolysis, transesterification, and condensation reactions in lab-scale and industrial processes.
• Plasticizer & Additive Production: Potential use in the development of specialized plasticizers or polymer additives to modify flexibility and processing characteristics.
• Crosslinking Agent: Can function as a crosslinker in thermoset polymer systems to enhance network density and performance.

Basic Information

Product Name	5-Methylisopthalic Acid Dimethylester
CAS No.	17649-58-0
Molecular Formula	C12H14O4
Molecular Weight	222.24 g/mol
Synonyms	Dimethyl 5-Methylisophthalate; 1,3-Benzenedicarboxylic acid, 5-methyl-, dimethyl ester; 5-Methylisophthalic Acid Dimethyl Ester; Dimethyl 5-Methylbenzene-1,3-dicarboxylate; 5-Methyl-1,3-benzenedicarboxylic acid dimethyl ester; 5-Methylisophthalic Acid Dimethyl Ester; 5-Methylisophthalic Acid Dimethyl Ester (5-MIDA-DME)
EINECS	Contact for details

Quality Control

Our 5-Methylisopthalic Acid Dimethylester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for sensitive applications like pharmaceutical synthesis and advanced material production. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

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). Keep away from strong oxidizing agents, strong acids, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

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