Carbolic acid, also known as phenol, is a colorless, oily liquid with a distinct smell. It is derived from coal tar and is commonly used in the production of plastics, resins, and as a disinfectant. Due to its antiseptic properties, it was historically used in medical settings for sterilization. In addition to its industrial applications, carbolic acid is also found in some household products, such as soaps and cleaners. However, it can be toxic in high concentrations, so safety precautions are essential when handling it.