Description

Terephthaloyl Chloride is a high-purity, reactive aromatic diacid chloride essential for advanced polymer synthesis. Its primary commercial value lies in its role as a key monomer for producing high-performance materials with exceptional thermal stability and mechanical strength. This compound is critically important for manufacturers in the polymer, specialty chemical, and advanced materials sectors seeking to develop superior products.

Application

• Primary monomer for Aramid fibers (e.g., Kevlar®, Twaron®) production, imparting high tensile strength and heat resistance.
• Synthesis of Polyester and Polyamide resins for engineering plastics, films, and high-barrier packaging materials.
• Production of Liquid Crystal Polymers (LCPs) used in electronics, automotive components, and precision molded parts.
• Manufacturing of specialty Polyphthalamides (PPA) for demanding applications requiring chemical and thermal resistance.
• Intermediate in organic synthesis for pharmaceuticals, agrochemicals, and dyes, facilitating the formation of amide and ester bonds.
• Cross-linking agent for enhancing the properties of coatings, adhesives, and composite materials.

Basic Information

Product Name	Terephthaloyl Chloride
CAS No.	100-20-9
Molecular Formula	C8H4Cl2O2
Molecular Weight	203.02 g/mol
Synonyms	TPC; Terephthalic Acid Dichloride; 1,4-Benzenedicarbonyl Chloride; p-Phthaloyl Dichloride; p-Phenylenedicarbonyl Chloride; Terephthalic Dichloride; Benzene-1,4-dicarbonyl Chloride; Dichloroterephthalaldehyde (obsolete)
EINECS	202-829-5

Quality Control

Our Terephthaloyl Chloride is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) for every shipment, detailing key parameters such as assay, color, and impurity profiles. Our quality commitment aligns with ISO standards and relevant industrial specifications to meet the exacting requirements of polymer and specialty chemical synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis. Store away from strong bases, alcohols, and water.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Melting Point	81 - 84 °C
Color (APHA)	≤ 50
Acid Value	≤ 1.0 mg KOH/g
Water Content (KF)	≤ 0.1 %

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