Its vapors may explode when exposed to an open flame. AN does not occur naturally. U.S. demand is likely to increase 2 to 3 percent per year for the next several years. The largest users of acrylonitrile are companies that make acrylic and modacrylic fibers. Exposure to acrylonitrile can occur in the workplace or in the environment following releases to air, water, land, or groundwater.
Exposure can also occur when people smoke cigarettes or breathe automobile exhaust.
It can also be absorbed through skin contact. It does not remain in the body due to its breakdown and removal. Acrylonitrile evaporates when exposed to air. It dissolves when mixed with water. Most releases of acrylonitrile to the environment are to underground sites or to air.