o-Toluic acid (CAS 118-90-1), also known as 2-methylbenzoic acid, is a foundational aromatic carboxylic acid that holds significant importance across various industrial sectors. Its chemical structure, characterized by a carboxylic acid group (-COOH) and a methyl group (-CH3) situated ortho to each other on a benzene ring, dictates its reactivity and application profile. Understanding these properties is key for researchers and manufacturers seeking to leverage its potential.

Chemically, o-toluic acid exhibits typical carboxylic acid behavior, participating in esterification, amide formation, and salt formation. The presence of the ortho-methyl group introduces steric effects that can influence reaction rates and regioselectivity, distinguishing it from its meta and para isomers. Its physical properties, such as a melting point typically around 103-106 °C and a boiling point of approximately 258-259 °C, are important parameters for handling and processing. As a solid, it often appears as white to slightly yellow crystalline powder or pale yellow crystals.

The synthesis of o-toluic acid can be achieved through several routes. A common method involves the oxidation of ortho-xylene. Alternatively, it can be produced via the Grignard reaction of 2-bromotoluene followed by carbonation. Manufacturers continuously refine these processes to achieve high purity levels, often exceeding 99%, which is critical for its use as an intermediate in sensitive applications like pharmaceutical ingredient synthesis.

The market demand for o-toluic acid is closely tied to the growth of its key end-use industries. The pharmaceutical sector's continuous need for novel APIs and intermediates drives a steady demand. Similarly, the agrochemical industry's development of new crop protection agents relies on such building blocks. Emerging applications in specialty polymers and advanced materials also contribute to market growth. For those looking to buy o-toluic acid, understanding these market dynamics can inform procurement strategies.

As a prominent o-toluic acid supplier, we observe a consistent demand from clients globally who require this compound for its reliability and versatility. The competitive landscape means that securing a favorable o-toluic acid price without compromising on quality is a priority for many purchasers. Working with established manufacturers, particularly those in China, often provides the best balance of cost-effectiveness and assured quality.

In conclusion, o-toluic acid remains a cornerstone chemical intermediate. Its well-defined properties, various synthesis pathways, and steady demand across key industries underscore its ongoing importance. For any professional in the chemical sector, a thorough understanding of this compound, from its chemistry to its market trends, is invaluable for effective sourcing and application.