* Antiseptic: Carbolic acid (phenol) was historically used as an antiseptic, but its use has declined due to its toxicity.
* Industrial Chemical: It's a key ingredient in the production of plastics, resins, and other chemicals.
* Disinfectant: Phenol and its derivatives are still used as disinfectants in some applications, though milder alternatives are now preferred.
* Medicine: Phenol derivatives are used in some medications, such as aspirin.
It's important to note that carbolic acid/phenol is a hazardous substance and should only be handled by trained professionals.