Forane® 409A (R-409A or FX-56) is a low ozone depleting blend of HCFC refrigerants R-22, R-124, and R-142b. R-409A is formulated to resemble the properties of R-12. Applications include many medium temperature refrigeration systems, vending machines, refrigerators, positive displacement chillers, humidifiers, and other systems using R-12 or R-500. Forane® 409A has properties and performance similar to R-12 and R-500. R-409A is ozone depleting and subject to phased out, according to the Montreal Protocol international treaty and the Clean Air Act in the United States.