The largest users of methylene chloride are companies that make paint strippers. Foam makers use methylene chloride as a blowing agent. Other companies use it to clean metal surfaces. Methylene chloride can also be added to aerosol sprays or used to extract unwanted material from foods and beverages, such as coffee. Exposure to methylene chloride can occur in the workplace or in the environment following releases to air, water, land, or groundwater.
Exposure can also occur when people use certain aerosol paint sprays and paint strippers.
Methylene chloride enters the body when breathed in with contaminated air or when consumed with contaminated food or water. It can also be absorbed through skin contact. It is not likely to remain in the body due to its breakdown and removal. Methylene chloride evaporates when exposed to air. It dissolves when mixed with water.