The substance decomposes on contact with alkalis producing trichlorobenzene, or on contact with powdered iron, aluminum and zinc. The substance can be absorbed into the body by inhalation and through the skin, and by ingestion. The substance irritates the eyes and the respiratory tract. The substance may cause effects on the central nervous system , resulting in convulsions and respiratory failure and collapse. Exposure may result in death.
Medical observation is indicated.
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the liver and kidneys. The substance is very toxic to aquatic organisms. In the food chain important to humans, bioaccumulation takes place, specifically in fish. Carrier solvents used in commercial formulations may change physical and toxicological properties.