One or more halogen atoms (such as chlorine, fluorine, bromine, or iodine) are joined to a phenolic ring structure to form halogenated phenols, a class of organic compounds. Due to their distinct chemical characteristics and wide range of applications, these substances have attracted a lot of interest in a number of disciplines, including chemistry, biology, and environmental science. 2,4,6-trichlorophenol (TCP), one of the most well-known halogenated phenols, is one of these. TCP is a white, crystalline substance with some water solubility. In the wood sector, it is frequently used as a disinfectant and preservative, particularly to protect wooden railroad ties and utility poles. It effectively prevents bacterial and fungal growth due to its potent antibacterial characteristics, extending the lifespan of these timber products. 2,4,5-trichlorophenol (TCP-C), another prominent member of this class, is used as an intermediate in the synthesis of insecticides, herbicides, and other agrochemicals. It is a crucial component in the creation of several chemical compounds that are used in agriculture to safeguard crops from pests and illnesses. Pharmaceutical and medicinal chemistry fields can also come across halogenated phenols. Researchers have looked into the potential biological effects of these substances, including their antioxidant, antibacterial, and anti-inflammatory qualities. While several halogenated phenols have showed promise as medication candidates for a variety of illnesses, more study is necessary to fully realize their therapeutic potential. Due to their toxicity and potential for environmental effect, halogenated phenols have drawn attention in environmental science due to their occurrence in natural waters, particularly in industrial effluents and wastewater. These substances have the potential to persist in aquatic ecosystems and negatively impact aquatic life. Therefore, it is crucial to monitor and control the release of halogenated phenols into the environment in order to lessen their negative ecological effects. In conclusion, halogenated phenols constitute a broad class of substances that have important applications in numerous sectors and academic disciplines. They are useful for applications ranging from wood preservation to pharmaceutical research due to their unique characteristics and chemical adaptability. However, given their potential for having a negative impact on the environment, it is crucial to handle and dispose of them properly to prevent harm to ecosystems.