Trimesic Acidis an important chemical intermediate, mainly used in some special products, such as preparation of the crosslinking agent for solid fuel of rocket boosters,aldol resin, water-soluble baking paint, high-performance plasticizers and reverse osmose membrane for sea water desalinization, etc. In addition, it is also applied in some other fields such as rare-earth metal ion's decomposition and purification,anti-cancer drugs, pharmaceutical intermediates,plant growth regulators,disinfectant, preservatives and Gas Chromatography, etc.