Industrial grade 98.40% Trimellitic Anhydride 552-30-7 1 2 4-Benzenetricarboxylic acid 1 2-anhydride 1 2 4-Benzenetricarboxylic anhydride 1 3-Dioxo-1 3-dihydro-2-benzofuran-5-carboxylic acid 4-Carboxy

Certificate of Analysis-COA 

 Applications 

1. For High-Temperature Plasticizers: Trimellitic anhydride (TMA, CAS 552-30-7) is the key raw material for trimellitate plasticizers such as TOTM, which deliver excellent heat resistance and long service life to flexible PVC used in automotive wire, cable and interior applications.

2. For Powder Coating Resins: TMA is used to synthesize polyester resins for powder coatings, improving hardness, gloss and weather resistance of coated surfaces for industrial and architectural applications.

3. For High-Performance Insulating Materials: TMA-based polyamide-imide and polyester resins provide outstanding thermal stability and electrical insulation, supporting wire enamels, insulating varnish and heat-resistant laminates in the electrical industry.

4. For Epoxy Curing And Alkyd Resins: As an epoxy curing agent component and a modifier for alkyd and waterborne resins, TMA shortens curing time and improves chemical resistance, heat stability and film performance in coating systems.

5. Reliable Supply For Global Industry: Supplied as high-purity white to light yellow crystalline flakes with consistent quality, TMA gives plasticizer, coating, electrical and resin manufacturers a dependable aromatic anhydride with stable supply, flexible packaging and professional technical support.

 Quality Assurance 

Every batch of chemicals leaves our factory with complete laboratory documentation — not a promise, but verifiable test data. From incoming raw material inspection to finished-goods release, each batch is tested against published specifications, and a Certificate of Analysis (COA) accompanies every single shipment. What you order is exactly what we test — and what we ship.

Tested by our in-house ISO 9001:2015 laboratory. Verified independently by third-party labs on request (SGS / BV / Intertek). Traceable from raw material to your warehouse.

 Packaging 

White plastic woven bag

kraft paper bag

ton bag

Export-grade packaging, custom labels

Solids (woven bags/cardboard drums/ton bags)

Liquids (plastic drums/IBC/ISO tanks)