Description

Terephthalic Acid is a high-purity aromatic dicarboxylic acid that serves as a critical raw material for the production of high-performance polymers. Its primary value lies in its role as the essential monomer for manufacturing polyethylene terephthalate (PET), a polymer fundamental to modern packaging and textiles. This product is indispensable for industries including synthetic fiber production, plastic bottle manufacturing, and engineering plastics, where consistent quality and reliable supply are paramount for efficient operations.

Application

• Primary Monomer for PET Production: The dominant application, used in the synthesis of polyethylene terephthalate (PET) resin for bottles, films, and food packaging.
• Synthetic Fiber Manufacturing: A key precursor in the production of polyester fibers for textiles, apparel, carpets, and industrial fabrics.
• Engineering Plastics & PBT Resins: Used in the manufacture of polybutylene terephthalate (PBT), a high-performance engineering plastic for automotive, electrical, and electronic components.
• Coating and Paint Resins: Employed as a building block for alkyd and other specialty resins, enhancing durability and chemical resistance in industrial coatings.
• Plasticizer and Intermediate Synthesis: Serves as an intermediate in the production of plasticizers, liquid crystal polymers (LCP), and other fine chemicals.
• Specialty Film Production: Used in high-barrier packaging films and magnetic recording tapes.

Basic Information

Product Name	Terephthalic Acid
CAS No.	25153-35-9
Molecular Formula	C8H6O4
Molecular Weight	166.13 g/mol
Synonyms	1,4-Benzenedicarboxylic Acid; p-Phthalic Acid; TPA; PTA; Benzene-1,4-dicarboxylic Acid; p-Dicarboxybenzene; 4-Carboxybenzoic Acid; Terephthalic Acid (Technical Grade)
EINECS	246-675-4

Quality Control

Our Terephthalic Acid is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing, including assay, impurity profile analysis, and critical physical parameter checks. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee compliance with your specifications and industry standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.5%
4-Carboxybenzaldehyde (4-CBA)	≤ 25 ppm
p-Toluic Acid	≤ 150 ppm
Moisture (Karl Fischer)	≤ 0.5%
Ash Content	≤ 15 ppm
Iron (Fe) Content	≤ 2 ppm
Color (in 5% KOH)	≤ 10 APHA
Acid Value (Titration)	675 ± 2 mg KOH/g

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