P-Toluic Acid is an alternative to the benzoic acid, which finds its application in various industrial processes in oxidation of p-xylene to terephthalic acid. Also known as 4-methylbenzoic acid, it appears as white crystalline solid that is completely soluble in acetone. With the molecular mass of 136.15 g/mol, this chemical is capable of donating a hydron to an acceptor. It is a type of carboxylic acid which is insoluble in water and can react with solution which results in release of gaseous hydrogen.