Toluene is toxic to humans. It can cause very serious damage to the central nervous system and can even cause death in cases of repeated exposure to high levels. Short-term inhalation of toluene causes effects such as nausea, dizziness, and weakness. These effects usually subside a few hours after exposure and pass over time. In higher amounts, it may cause effects such as loss of consciousness, permanent disorders in color and vision loss. At the same time, long-term exposure to toluene may cause damage to internal organs such as the heart, kidney, and liver. The person’s blood values ​​are also severely affected. Although it generally does not accumulate in the body, toluene has been observed in adipose tissues in some cases. Studies show that toluene harms fertility.

Toluene is also extremely irritating in case of skin and eye contact and can cause serious visual impairment. Toluene is also extremely flammable. It can form explosive mixtures with air and, as its density is less than water, fires cannot usually be extinguished with water. In addition, since it is a gas heavier than air, it can cause accumulation on the ground in closed warehouses. Therefore, care must be taken when working with toluene, and it should be kept in well-ventilated areas. It should be kept away from any source of fire and heat. Precautions should be taken to minimize the exposure of workers working with toluene.