4-tert-Butylphenol (t-BP, 4-TBP, p-tert-butylphenol, PTBP) is an alkyl phenol. It is an aquatic pollutant and an endocrine disrupting chemical (EDC). Exposure to 4-TBP is reported to be one of the factors causing vitiligo. Its genotoxic potential has been studied by in vivo micronucleus tests in a category approach. The degradation of t-BP in water using UV/micro-aeration process has been investigated. Methods for its determination in water and cereal samples have been reported. The kinetics of chlorination reaction of 4-tert-butylphenol in aqua has been studied. The hydrogenation of PTBP to form cis-4-tert-butylcyclohexanol (PTBCH) with high selectivity in the presence of supported rhodium catalyst has been reported. The effect of UV and combined MW–UV irradiation on 4-TBP transformation has been studied.

4-tert-Butylphenol is a phenol derivative. Its contact with skin may lead to leukoderma. It is widely used in the polymer industry. Reaction of 4-tert-Butylphenol with mushroom tyrosinase has been reported to afford 4-t-butyl-o-benzoquinone and kinetics of this enzymatic reaction has been investigated.