Grangemouth (grānjˈməth, –mouth) [key], town (1981 pop. 21,744), Falkirk, central Scotland, on the Forth River at the eastern terminus of the Forth and Clyde canal. Grangemouth is an important oil and container port, with an oil refinery and large chemical works. Imports include timber, wood pulp, rubber, and large quantities of scrap metal used for the production of steel. Timber trade and sawmilling are also significant industries. Grangemouth was founded in 1777 to be the terminus of the canal, which opened in 1790. It was the scene of many experiments in steam navigation; the Charlotte Dundas was launched there in 1802.