Description

3-Methyl-Phthalic Acid Dimethyl Ester is a versatile dimethyl ester derivative of a substituted phthalic acid, serving as a key intermediate in advanced organic synthesis. Its value lies in providing a reactive diester framework that can be readily modified, offering chemists a building block for creating complex molecules with tailored properties. This compound is essential for R&D and production in industries such as polymer chemistry, agrochemicals, and specialty materials.

Application

• Polymer & Plasticizer Intermediate: A crucial monomer or intermediate in the synthesis of specialized polyesters and polymeric plasticizers, enhancing material flexibility and durability.
• Agrochemical Synthesis: Used in the production of advanced pesticides and herbicides, where its aromatic ester structure contributes to the active ingredient's efficacy and stability.
• Pharmaceutical Intermediate: Serves as a building block in the synthesis of certain active pharmaceutical ingredients (APIs) and fine chemicals requiring a substituted phthalate core.
• Dye & Pigment Manufacturing: Acts as a precursor in the synthesis of complex organic dyes, pigments, and optical brighteners.
• Organic Synthesis & Research: A valuable reagent in academic and industrial laboratories for constructing complex organic molecules, including ligands and functional materials.
• Specialty Chemical Production: Employed in formulating performance chemicals, such as corrosion inhibitors, specialty solvents, and coating additives.

Basic Information

Product Name	3-Methyl-Phthalic Acid Dimethyl Ester
CAS No.	21483-46-5
Molecular Formula	C11H12O4
Molecular Weight	208.21 g/mol
Synonyms	Dimethyl 3-Methylphthalate; 3-Methylphthalic Acid Dimethyl Ester; 1,2-Benzenedicarboxylic Acid, 3-Methyl-, Dimethyl Ester; 3-Methyl-1,2-benzenedicarboxylic Acid Dimethyl Ester; 3-Methylphthalic Acid Methyl Ester; Methyl 3-Methylphthalate; 3-Methyl Phthalate Dimethyl Ester
EINECS	244-416-9

Quality Control

Our 3-Methyl-Phthalic Acid Dimethyl Ester is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent specifications suitable for industrial and research applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request 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 (typically 15-25°C). Keep away from strong acids and organic solvents. Ensure the container is kept upright to prevent leakage.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or solid
Identification (IR)	Conforms to structure
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC/HPLC)	Individual impurity ≤ 1.0%

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