Trimellitic anhydride referred to as partial anhydride or TMa. It is an important fine chemical product with white or yellowish needle-like crystals and a molecular weight of 1 92.12. The melting point is 16l ~ l63 ° C, the boiling point is 240 ~ 245 ° C / 0.18 MPa. Soluble in water, ethanol, acetone, dimethylformamide, ethyl acetate, slightly soluble in toluene, carbon tetrachloride and petroleum ether. poisonous. Irritating to the skin membrane. The maximum allowable concentration in air is 1 mg/m3. 3. Trimellitic anhydride is mainly used in the production of PVC resin plasticizer and polyimide resin paint for the production of water - soluble alkyd resin, epoxy resin curing agent. An impregnating agent for low pressure and pulsed power containers for the production of motion picture film, water treatment agents, surfactants, and the like. In recent years, due to the urgent demand from the market, domestic and foreign manufacturers have developed and produced this product to meet market demand. Led Lighting Lens,Nautical Beacon Light Lens,Led Flashlight Lens,High Bay Light Lens Dongguan Lianlong Photoelectric Technology Co., Ltd , https://www.lianlonggd.com
Trioctyl trimellitate (TOTM) formed by esterification of trimellitic anhydride and octanol has good heat resistance, low volatility, cold resistance, electrical insulation, oil resistance and processability. Widely used as a plasticizer for PVC heat-resistant plasticizers, a solvent-resistant cross-linked vinyl chloride resin, a primary plasticizer for 90 C and 105 C heat-resistant cable formulations, and as a 6 kV, 10 kV high-voltage cable. It can also be used as an impregnating agent and high temperature insulating varnish. It is widely used as a covering material for electrical parts, automotive wires, semiconductors, etc.; it is used as a car cable, moisture-proof and heat-resistant epoxy resin capsule group. It is divided into anti-fog vinyl chloride resin component and anhydrous dye component of fiber and thermoplastic; used as car seat cushion, artificial leather, washing machine drain hose, blinds, sealing material and filler. At present, the manufacturers of trioctyl trimellitate in China mainly include Weifang Kebel Chemical Co., Ltd., Wuxi Rubber Group, Beijing Chemical Third Plant and Jinling Petrochemical Co., Ltd.