Description

Terephthalic Acid Monomethyl Ester Potassium Salt is a key organic salt and chemical intermediate derived from terephthalic acid. This compound is valued for its role in facilitating specific organic synthesis reactions, particularly in polymer and fine chemical manufacturing. It is primarily utilized by industrial chemists and R&D professionals in the production of advanced polymers, liquid crystal materials, and pharmaceutical intermediates where precise molecular control is required.

Application

• Polymer Synthesis: Acts as a monomer or chain modifier in the production of specialized polyesters and polyamides.
• Liquid Crystal Polymers (LCPs): Serves as a building block in the synthesis of high-performance LCPs for electronics and displays.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Organic Synthesis: Functions as a protected or activated form of terephthalic acid for controlled carboxylate reactions.
• Chemical Research & Development: Employed in laboratories for developing new materials and catalytic processes.
• Specialty Chemicals: Used in the formulation of dyes, pigments, and other performance chemicals.

Basic Information

Product Name	Terephthalic Acid Monomethyl Ester Potassium Salt
CAS No.	42967-55-5
Molecular Formula	C9H7KO4
Molecular Weight	218.25 g/mol
Synonyms	Potassium 4-(methoxycarbonyl)benzoate; Monomethyl terephthalate potassium salt; Potassium hydrogen terephthalate monomethyl ester; Terephthalic acid monomethyl ester, potassium derivative; Methyl 4-carboxybenzoate potassium salt; 4-(Methoxycarbonyl)benzoic acid potassium salt; Methyl hydrogen terephthalate potassium salt; Benzoic acid, 4-(methoxycarbonyl)-, potassium salt (1:1)
EINECS	Contact for details

Quality Control

Our Terephthalic Acid Monomethyl Ester Potassium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics is provided with every shipment to guarantee it meets your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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