552-30-7

CAS Nr.:

552-30-7

Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

EINECS Name:

Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

209-008-0

EINECS Nr.:

209-008-0

Trimellitsäureanhydrid / TMA / 1,2,4-Tricarboxybenzol-1,2-anhydrid / 1,2,4-Benzoltricarbonsäure-1,2-anhydrid / Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

Synonym:

Trimellitsäureanhydrid / TMA / 1,2,4-Tricarboxybenzol-1,2-anhydrid / 1,2,4-Benzoltricarbonsäure-1,2-anhydrid / Benzene-1,2,4-tricarboxylic acid 1,2-anhydride

Trimellitic anhydride, also known by CAS number 552-30-7, is an important chemical raw material used in a variety of industrial applications. This organic compound is distinguished by specific physical properties that make it valuable across many sectors.

Physical Properties of Trimellitic Anhydride

Trimellitic anhydride (TMA) is a white to slightly yellow crystalline solid. It has a molar mass of 192.13 g/mol and a melting point of approximately 165°C. TMA is insoluble in water but readily soluble in organic solvents such as acetone, methanol, and ethanol. Its chemical structure imparts high thermal and chemical stability, making it a robust material for various industrial applications.

Applications of Trimellitic Anhydride

Trimellitic anhydride is commonly used in the production of polyester resins. These resins are known for their excellent mechanical properties and chemical resistance. In the coatings and paints industry, these resins are used to manufacture high-quality coatings, which are particularly in demand in the automotive and construction industries. The use of TMA in polyester resins significantly improves the hardness and durability of the final products.

In the plastics industry, trimellitic anhydride is used to produce plasticizers. These plasticizers are employed to increase the flexibility and durability of plastics. Specifically, in the production of PVC (polyvinyl chloride), TMA-based plasticizers play a crucial role. They ensure that the plastics remain flexible even at low temperatures, thereby extending their lifespan.

Trimellitic anhydride is also used in the production of electrical insulation materials. These materials are essential for insulating cables and other electrical components to ensure the safety and efficiency of electrical systems. TMA-based insulation materials offer excellent heat resistance and mechanical strength, making them ideal for demanding electrical applications.

In the adhesives and sealants industry, trimellitic anhydride is used as a reactive diluent. It improves the viscosity and adhesion properties of adhesives and sealants, resulting in stronger and more durable bonds. These products are particularly important in the construction and automotive industries, where reliable and long-lasting bonds are required.

In summary, trimellitic anhydride is an indispensable raw material in many industrial sectors due to its unique physical properties and versatility. Its ability to enhance the properties of polyester resins, serve as a base for plasticizers, and be used in electrical insulation materials as well as adhesives and sealants, makes it a critical component in modern manufacturing and processing.