What happens to phosgene when it enters the environment?
• When released to air, phosgene will exist solely as a gas. Phosgene gas is degraded in the atmosphere by reacting with substances commonly found in the air, but this is a very slow process. Phosgene in the air may also react with moisture in clouds or rain and be broken down into other compounds. • Phosgene will react with water and be broken down into other products. Some of the phosgene that is not broken down may evaporate into air. • When released to soil, phosgene will not stick to the soil. Small amounts may evaporate into air or pass through the soil surface and contaminate groundwater. Most of the phosgene in soil will be broken down when it comes into contact with moisture. • Phosgene does not accumulate in the food chain.
