Description

Terephthalic Acid CAS NO 100-21-0 is a high-purity aromatic dicarboxylic acid that serves as a fundamental building block in modern polymer chemistry. Its primary commercial value lies in its exceptional reactivity and structural properties, which are critical for producing high-performance, durable materials. This essential chemical is primarily required by manufacturers in the polyester fiber, polyethylene terephthalate (PET) resin, and specialty plastics industries.

Application

• Primary Raw Material for PET Production: The predominant use is in the synthesis of polyethylene terephthalate (PET) for beverage bottles, food packaging, and synthetic fibers.
• Polyester Fiber and Yarn Manufacturing: A key monomer for producing high-strength polyester fibers used in textiles, apparel, and industrial fabrics.
• Engineering Plastics and PBT Resins: Used in the production of polybutylene terephthalate (PBT) and other engineering thermoplastics for automotive parts, electrical components, and consumer goods.
• Coating and Paint Resins: Employed as a component in alkyd resins and other coating formulations to enhance durability and chemical resistance.
• Plasticizer and Additive Intermediate: Serves as a precursor in the synthesis of various plasticizers and performance additives for polymers.
• Specialty Polymer Synthesis: Used in research and production of liquid crystal polymers (LCPs), aramid fibers, and other high-value specialty polymers.

Basic Information

Product Name	Terephthalic Acid
CAS No.	100-21-0
Molecular Formula	C8H6O4
Molecular Weight	166.13 g/mol
Synonyms	1,4-Benzenedicarboxylic Acid; p-Phthalic Acid; TPA; PTA (Purified Terephthalic Acid); Benzene-1,4-dicarboxylic Acid; p-Dicarboxybenzene; 4-Carboxybenzoic Acid; Terephthalic Acid Technical Grade
EINECS	202-830-0

Quality Control

Our Terephthalic Acid is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, and acid value, which are critical for downstream polymerization processes. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents, strong bases, and sources of ignition. The product is stable under recommended conditions.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.5 %
Moisture (KF)	≤ 0.5 %
Ash Content	≤ 0.01 %
4-Carboxybenzaldehyde (4-CBA)	≤ 25 ppm
p-Toluic Acid (p-TA)	≤ 150 ppm
Color (APHA)	≤ 10
Acid Value	675 ± 2 mg KOH/g

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