The efficacy and utility of any chemical compound are fundamentally rooted in its inherent properties. For 4-Fluoro-3-methylbenzoic acid (CAS 403-15-6), a compound widely recognized for its role as a versatile intermediate, understanding its chemical and physical characteristics is key to harnessing its full potential. This fluorinated aromatic carboxylic acid possesses a molecular formula of C8H7FO2 and a molecular weight of 154.14 g/mol. Its appearance is typically described as a white to light yellow crystal powder, indicating a solid state at room temperature with a defined crystalline structure.

Key physical properties include a melting point in the range of 164-168 °C, which is crucial for handling, storage, and processing considerations. The boiling point, predicted to be around 266.3 °C, and a density of approximately 1.258 g/cm³, further inform its behavior in various chemical reactions and formulations. The pKa value of around 4.21 signifies its acidic nature, a characteristic that dictates its reactivity in acid-base reactions and its potential for salt formation, which can influence solubility and handling. These precisely defined 4-Fluoro-3-methylbenzoic acid properties are vital for researchers and manufacturers to optimize their experimental designs and production processes.

Chemically, the presence of the fluorine atom significantly influences the electron distribution within the benzene ring, impacting the reactivity of the carboxylic acid group and the methyl substituent. This electron-withdrawing effect can enhance the acidity of the carboxylic group and modify the compound's susceptibility to electrophilic or nucleophilic attack. For those seeking to buy 4-Fluoro-3-methylbenzoic acid for specific synthetic purposes, these properties are paramount. Understanding these structural nuances helps in predicting its behavior in various 4-Fluoro-3-methylbenzoic acid synthesis routes and downstream applications, from developing new pharmaceuticals to creating advanced materials.