The ceremony was performed by head of the group's Polyurethanes business unit Raimar Jahn, board member and site manager Margret Suckale, and the manager of the Ludwigshafen verbund Bernhard Nick.
The German chemical giant will invest a total of about Euro 1 billion ($1.3 billion) in the plant.
When completed in late 2014, the plant will make 300 kilotonnes per annum of TDI. After that, BASF plans to idle one of its older TDI facilities in Schwarzheide, Germany.
Noting that "this plant in Ludwigshafen sets new standards, Jahn said it is "The world's largest single-train system with the latest technology. ... That makes us competitive and brings many
advantages for the manufacturing industry and our customers."
BASF's currently makes TDI at sites in Geismar, Louisiana; Yeosu,South Korea; Caojing, China as well as at Schwarzheide.