Description

Dimethyl 2-Ethynylterephthalate is a specialized diester monomer featuring a reactive ethynyl group on the aromatic core. This compound matters as a high-value building block for advanced polymers and functional materials, enabling the synthesis of materials with tailored thermal, mechanical, and optical properties. It is primarily needed by R&D chemists and process engineers in the polymer, pharmaceutical, and advanced electronics industries for creating specialty polyesters, cross-linked networks, and molecular scaffolds.

Application

• Polymer Synthesis: A key monomer for producing novel polyesters and polyarylates with incorporated acetylene functionality for subsequent cross-linking or functionalization.
• Pharmaceutical Intermediates: Serves as a versatile synthon in the research and development of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Material Science Research: Used in the development of high-performance resins, liquid crystalline polymers, and other advanced materials requiring rigid, functionalized aromatic units.
• Cross-linking Agent: The ethynyl group allows it to act as a cross-linker in thermoset polymers, enhancing thermal stability and mechanical strength.
• Organic Electronics: Investigated as a precursor for conjugated materials and small molecule semiconductors in OLED and OFET research.
• Specialty Coatings: Incorporated into coating formulations to improve durability, chemical resistance, and adhesion properties.

Basic Information

Product Name	Dimethyl 2-Ethynylterephthalate
CAS No.	1360461-76-2
Molecular Formula	C12H10O4
Molecular Weight	218.21 g/mol
Synonyms	1,4-Benzenedicarboxylic acid, 2-ethynyl-, 1,4-dimethyl ester; 2-Ethynylterephthalic Acid Dimethyl Ester; Dimethyl 2-Ethynyl-1,4-benzenedicarboxylate; 2-Ethynylbenzene-1,4-dicarboxylic acid dimethyl ester; DMETP
EINECS	Contact for details

Quality Control

Our Dimethyl 2-Ethynylterephthalate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC, NMR, and GC-MS, to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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