Description

Dimethyl Terephthalate (CAS NO 120-61-6) is a high-purity organic compound that serves as a critical monomer and intermediate in advanced polymer synthesis. Its primary value lies in its role as a key precursor for producing high-performance polyesters, including polyethylene terephthalate (PET). This product is essential for manufacturers in the plastics, packaging, and synthetic fiber industries seeking reliable raw materials for consistent, high-quality end products.

Application

• Primary monomer for the production of Polyethylene Terephthalate (PET) resin and fibers.
• Key intermediate in the synthesis of engineering plastics and specialty polyesters.
• Used in the manufacture of plastic bottles, films, and food packaging materials.
• Essential raw material for producing high-tenacity synthetic fibers for textiles and industrial applications.
• Intermediate in organic synthesis for pharmaceuticals and fine chemicals.
• Used in coatings and adhesives formulations requiring specific polymer properties.
• Starting material for liquid crystal polymers (LCPs) and other high-performance polymers.

Basic Information

Product Name	Dimethyl Terephthalate
CAS No.	120-61-6
Molecular Formula	C10H10O4
Molecular Weight	194.18 g/mol
Synonyms	1,4-Benzenedicarboxylic acid, dimethyl ester; DMT; Dimethyl p-phthalate; Methyl terephthalate; Terephthalic acid dimethyl ester; p-(Methoxycarbonyl)benzoic acid methyl ester; Benzene-1,4-dicarboxylic acid dimethyl ester; DMT (monomer)
EINECS	204-411-8

Quality Control

Our Dimethyl Terephthalate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. The product undergoes comprehensive analytical testing, including chromatography and spectrometry, to meet precise industry specifications. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources, open flames, and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.5%
Melting Point	140 - 142 °C
Acidity (as Terephthalic Acid)	≤ 0.02%
Water Content (KF)	≤ 0.05%
Ash Content	≤ 0.01%

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