May explosively decompose on shock, friction, or concussion. On combustion, forms toxic fumes including nitrogen oxides. Reacts with ozone causing explosion hazard. The substance irritates the eyes. The substance may cause effects on the cardiovascular system and blood , resulting in fall of blood pressure and circulatory collapse, and formation of methaemoglobin in larger amounts.
Medical observation is indicated.
Repeated or prolonged contact may cause skin sensitization. Repeated exposure leads to marked tolerance. Short absence from exposure may lead to sudden death. The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion. The substance is toxic to aquatic organisms.