phydroxytoluene

p-Hydroxytoluene, also known as 4-hydroxytoluene or para-cresol, is an organic compound with the chemical formula CH3C6H4OH. It is a phenol derivative where a methyl group is attached to the para position of the benzene ring relative to the hydroxyl group. p-Hydroxytoluene is a white crystalline solid at room temperature with a characteristic phenolic odor. It is slightly soluble in water but readily soluble in many organic solvents such as ethanol and ether.

This compound is found naturally in some plants and is also a component of coal tar. Industrially, p-hydroxytoluene can be synthesized through various methods, including the alkylation of phenol or the diazotization of p-toluidine followed by hydrolysis. Its primary uses are as an intermediate in the production of antioxidants, disinfectants, and flavors. For instance, it is a precursor to butylated hydroxytoluene (BHT), a widely used antioxidant in food and cosmetics. p-Hydroxytoluene itself exhibits some antiseptic properties. In the fragrance and flavor industry, it can contribute to certain smoky or medicinal notes. It is important to handle p-hydroxytoluene with care as it can be irritating to the skin and eyes.