The m-methylbenzoic acid has a molecular formula of C8H7O2 and a molecular weight of 135.1405. It is a white or yellow crystal having a melting point of 111 to 113 ° C and a boiling point of 263 ° C. It is an important organic chemical raw material and pesticide intermediate. In the organic synthesis industry, m-methylbenzoic acid is mainly used for the production of toluene diethylamine and m-toluonitrile; it is mainly used as a herbicide and oxalofen in pesticides. And the production of insect repellents [1-4]. For example, N,N-diethylm-methylbenzamide (DETA) is a spectral insect repellent that is effective against mosquitoes, fleas, and ticks, so it is widely used, and the most important one is DETA. It is non-toxic and safe to use, so this compound meets the needs of people's effective avoidance and hygiene, so it has great market potential. N,N-diethyl m-methylbenzamide is prepared from m-methylbenzoic acid as a raw material, and the importance of m-benzoic acid is apparent.
In addition, m-methylbenzoic acid can also be used as a developer for color film, which is a good column auxiliary filler when studying the chemical behavior of nucleotides.