Constructed in two phases, Hahn Hall-South Wing includes the Chemistry Phase I Research Laboratories, constructed in 1988, and Chemistry-Physics Phase II, built in 2002.听
It was the听first building to be named for Hahn. An adjacent, 85,000-square-foot building was named for Hahn in 2009 and is used for chemistry and physics. Today, that building is called Hahn Hall-North Wing.