Description

1,2-Benzenedicarboxylic Acid, 4,5-Dimethyl- is a specialized dimethyl-substituted derivative of phthalic acid, offering unique steric and electronic properties for advanced chemical synthesis. This compound is valued for its role as a key building block in the production of high-performance polymers, specialty plasticizers, and complex organic intermediates. It is primarily sought by R&D laboratories and industrial manufacturers in the polymer, agrochemical, and pharmaceutical sectors for creating materials with tailored characteristics.

Application

• Polymer & Resin Intermediate: A key monomer for synthesizing specialized polyesters and alkyd resins with modified thermal and mechanical properties.
• Specialty Plasticizer Precursor: Used in the manufacture of high-molecular-weight phthalate esters for applications requiring low volatility and enhanced permanence.
• Agrochemical Synthesis: Serves as a crucial intermediate in the production of certain herbicides and fungicides.
• Pharmaceutical Intermediate: Employed in the research and development of active pharmaceutical ingredients (APIs) and fine chemicals.
• Dye & Pigment Manufacturing: Acts as a starting material for producing complex organic colorants and pigments.
• Liquid Crystal & OLED Materials: Used in the synthesis of advanced organic electronic materials.
• Cross-linking Agent: Functions as a cross-linker in epoxy and other thermosetting resin systems.
• Corrosion Inhibitor Formulation: A component in specialty formulations designed to protect metal surfaces.

Basic Information

Product Name	1,2-Benzenedicarboxylic Acid, 4,5-Dimethyl-
CAS No.	5680-10-4
Molecular Formula	C10H10O4
Molecular Weight	194.18 g/mol
Synonyms	4,5-Dimethylphthalic Acid; 4,5-Dimethylbenzene-1,2-dicarboxylic Acid; 3,4-Dimethylphthalic Acid; 4,5-Dimethyl-1,2-benzenedicarboxylic Acid; 4,5-Dimethyl-o-phthalic Acid; 4,5-Dimethylphthalic Acid (mixed isomers); Dimethylphthalic Acid (4,5-)
EINECS	227-123-5

Quality Control

Our 1,2-Benzenedicarboxylic Acid, 4,5-Dimethyl- is produced under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics. Specifications can be tailored to meet specific customer requirements, including research-grade and industrial-grade standards.

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 bases, and sources of heat.

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)	≤ 20 ppm

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