Description

1,2,3,4-Benzenetetracarboxylic Acid 2,3-Dimethyl Ester is a high-purity, multi-functional organic intermediate derived from pyromellitic acid. This compound is valued for its role as a key building block in the synthesis of advanced polymers, specialty chemicals, and functional materials. It is primarily sought by manufacturers in the polymer, pharmaceutical, and fine chemical industries for applications requiring precise molecular architecture and consistent performance.

Application

• Polymer Synthesis: A crucial monomer for producing high-performance polyimides and polyamide-imides, which are used in electronics, aerospace, and automotive components for their thermal stability and mechanical strength.
• Pharmaceutical Intermediates: Serves as a versatile synthon in the multi-step synthesis of complex active pharmaceutical ingredients (APIs) and drug candidates.
• Crosslinking Agent: Used in the formulation of specialty coatings, adhesives, and resins to enhance durability, chemical resistance, and thermal properties.
• Liquid Crystal Polymers (LCPs): An important precursor in the manufacture of LCPs for high-precision connectors, sensors, and other advanced electronic applications.
• Fine Chemical Production: Employed in organic synthesis to create complex esters, anhydrides, and other derivatives for research and industrial applications.
• Dye and Pigment Intermediate: Acts as a starting material for synthesizing specialized colorants and functional dyes.

Basic Information

Product Name	1,2,3,4-Benzenetetracarboxylic Acid 2,3-Dimethyl Ester
CAS No.	22191-54-4
Molecular Formula	C14H12O8
Molecular Weight	308.24 g/mol
Synonyms	Pyromellitic Acid 2,3-Dimethyl Ester; 1,2,3,4-Benzenetetracarboxylic Acid Dimethyl Ester (mixed isomers); Dimethyl Pyromellitate; 2,3-Dimethyl Benzene-1,2,3,4-tetracarboxylate; 1,2,3,4-Benzenetetracarboxylic Acid, 2,3-Dimethyl Ester; PMDA Dimethyl Ester (partial); Tetramethyl Benzene-1,2,3,4-tetracarboxylate (isomeric mixture)
EINECS	Contact for details

Quality Control

Our production of 1,2,3,4-Benzenetetracarboxylic Acid 2,3-Dimethyl Ester adheres to stringent quality management protocols. Each batch is subjected to comprehensive analytical testing, including HPLC, GC, and NMR, to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are provided and can be tailored to meet specific customer or regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. The container should be kept tightly sealed when not in use to prevent contamination and moisture absorption.

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 (as Pb)	≤ 10 ppm

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