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China, Chinese Versatile Trimellitic Anhydride CAS 552-30-7 for Global Industries1 Industrial Products Supplier Manufacturer Details, price list catalog:
China Industrial Products Supplier Manufacturer List Catalog
Organic ChemicalsBenzene DerivativeTrimellitic AnhydrideAnhydride
Shanghai Mingyi New Materials Co., Ltd.
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Product DescriptionTrimellitic Anhydride (TMA)I. Chemical Nature and Physicochemical Propertie? Molecular Structure: A cyclic anhydride formed by dehydration of three carboxyl groups at the 1,2,4 positions of a benzene ring (C9H4O5), featuring reactive anhydride groups. ? Physical Properties: White needle-like crystals; melting point 168°C, boiling point 390°C, density 1.54 g/cm3. Slightly soluble in toluene, readily soluble in polar solvents (e.g., acetone), and hydrolyzes slowly in water.II. Key Production ProcessesLiquid-Phase Air Oxidation (Mainstream)Using pseudocumene as raw material, acetic acid as solvent, and Co-Mn-Br as catalyst, air oxidation at 200°C and 2.0 MPa yields trimellitic acid, which is dehydrated to TMA with a yield of 130% and purity ≥99%.Nitric Acid Oxidation (Traditional)Nitric acid oxidizes pseudocumene at 180–205°C and 1.5–3.0 MPa. Simple process but severe corrosion issues, gradually phased out.Other ProcessesGas-phase oxidation is not industrialized due to low catalyst selectivity; the MGC method uses m-xylene as raw material but requires acid-resistant equipment (HF-BF3 system).III. Industrial Applications1. Polymer Materials? PVC Plasticizer TOTM: Enhances PVC heat resistance and electrical insulation for new energy vehicle cables and high-speed rail interiors.? Polyimide Resins: Withstand 260°C, applied in 5G chip heat dissipation substrates and aerospace thermal insulation. 2. Functional Chemicals? Epoxy Curing Agent: Cured products have a Tg of 198°C, used in wind turbine blades and high-voltage insulation.? Aviation Lubricant Additives: Anti-wear agents maintain lubricity at -50°C to 200°C for turbofan engines. 3. Emerging FieldsHalogen-free flame-retardant polyesters for electronic casings; chain extenders for PLA biodegradables, increasing tensile strength to 90 MPa.IV. Safety and StorageToxicity & Protection: LD50 (oral, rat) 1.5 g/kg. Dust irritates respiratory tract; workplace concentration <1 mg/m3. Use N95 masks and chemical-resistant gloves.Storage: Seal in dry nitrogen, prevent hydrolysis, separate from amines and oxidants. Use CO2 fire extinguishers.SpecificationProduct Name1,2,4-Benzenetricarboxylic anhydrideAppearanceWhite flakesCAS552-30-7EINECS209-008-0Chemical formulaC9H4O5Molecular weight192.13Density1.54Purity98%Package25kg/bag; 25kg/drumPacking & DeliveryThe product packaging can be packed in bags of 25 kg/bag, barrels of 25 kg/drum, or ton bags of 500 kg/bag. The transportation methods support sea, air, and land transportationCompany ProfileShanghai Minghi New Materials Co., LtdShanghai Mingyi New Materials Co., Ltd. Was founded in February 2019. It is a professional supplier of lithium salts and chemical products based in Shanghai and serving the global market. With a registered capital of 5 million yuan, leveraging its profound insights into the new energy and chemical industries, the company is committed to providing high - quality lithium salt products and diversified chemical solutions to customers worldwide.
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