Cresol/Cresylic Acid. (A) CRESOL/CRESYLIC ACID . o-CRESOL. m-CRESOL. p-CRESOL. 1319-77-3, 95-48-7, 108-39-4, 106-44-5. Hazard Summary. cresols from automobile exhaust, power plants, and oil refineries. Acute (short-term) inhalation exposure by humans to mixed cresols results in respiratory tract irritation, with .