Phenol is a common organic compound, also known as carbolic acid. It is a colorless or white crystalline solid with a strong irritating odor. It is mainly used in the production of dyes, pigments, adhesives, plasticizers, lubricants, disinfectants, etc. In addition, it is also an important intermediate product in the chemical industry.

At the beginning of the 20th century, phenol was found to have strong toxicity to the human body, and its use in the production of disinfectants and other products was gradually replaced by other substances. In 1930s, the use of phenol in cosmetics and toiletries was banned due to its serious toxicity and irritating odor. In 1970s, the use of phenol in most industrial applications was also banned due to its serious environmental pollution and human health hazards.

In the United States, the use of phenol in industry has been strictly controlled since the 1970s. The U.S. Environmental Protection Agency (EPA) has established a series of laws and regulations to restrict the use and emission of phenol in order to protect human health and the environment. For example, the emission standards for phenol in wastewater have been strictly defined, and the use of phenol in production processes has been restricted. In addition, the FDA (Food and Drug Administration) has also established a series of regulations to ensure that food additives and cosmetics do not contain phenol or its derivatives.

In conclusion, although phenol has a wide range of applications in industry and daily life, its toxicity and irritating odor have caused great harm to human health and the environment. Therefore, many countries have taken measures to restrict its use and emission. In the United States, although the use of phenol in industry has been strictly controlled, it is still widely used in hospitals and other medical institutions as a disinfectant and sterilant. However, due to its high toxicity and potential health hazards, it is recommended that people should avoid contact with phenol as much as possible.