Description

Trimellitic Acid is a versatile and high-purity aromatic tricarboxylic acid, a critical building block for advanced polymers and specialty chemicals. Its trifunctional nature enables the synthesis of high-performance materials with superior thermal stability and mechanical properties. This compound is essential for manufacturers in the plastics, coatings, and resin industries seeking to enhance product durability and performance.

Application

• Primary monomer for the production of polyimide resins and high-temperature plastics.
• Key intermediate in the synthesis of plasticizers, such as trimellitates, for PVC and other polymers.
• Manufacturing of powder coatings and alkyd resins, improving finish durability and weatherability.
• Production of water-soluble polymers and dispersants for industrial applications.
• Intermediate for dyes, pigments, and specialty organic chemicals.
• Used in the formulation of adhesives and sealants requiring high thermal resistance.
• Research and development of novel pharmaceutical intermediates and fine chemicals.
• Cross-linking agent for epoxy resins and other thermosetting polymers.

Basic Information

Product Name	Trimellitic Acid
CAS No.	528-44-9
Molecular Formula	C9H6O6
Molecular Weight	210.14 g/mol
Synonyms	1,2,4-Benzenetricarboxylic Acid; Anhydrotrimellitic Acid; 4-Carboxyphthalic Acid; TMA; Benzene-1,2,4-tricarboxylic acid; Trimellitic acid anhydride (hydrolyzed); NSC 2016; Kyselina trimellitova
EINECS	208-432-1

Quality Control

Our Trimellitic Acid is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. The product is tested against rigorous in-house specifications, which typically include assay, identification, and impurity profile analysis. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance and regulatory compliance needs.

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). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	238°C - 242°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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