Benzyl chloride, also known as benzyl chloride and chlorinated toluene, is a colorless liquid with a strong pungent odor. It is miscible with organic solvents such as chloroform, ethanol, and ether. It is insoluble in water but can evaporate with water vapor. Its vapor has a certain irritation to the mucous membrane of the eye and is a strong tear gas. At the same time, benzyl chloride is also an intermediate in organic synthesis and is widely used in the synthesis of dyes, pesticides, synthetic fragrances, detergents, plasticizers, and medicines.