Leuna is a town in the Saalekreis, Saxony-Anhalt, eastern Germany, south of Merseburg and Halle. It is known for the Leunawerke (English: Leuna works), at 13 km2 one of the biggest chemical industrial complexes in Germany, where a very wide range of chemicals and plastics is produced. In 1960, the town's population was nearly 10,000, but high unemployment rates and poor living conditions, including pollution from nearby industries, has caused significant outward migration. Before the 31 December 2009 incorporation of neighbouring municipalities, its population had sunk to 6670.
The first chemical plant in Leuna was built in 1916 by BASF, and produced ammonia, at first for use in the manufacture of explosives and, after 1919, fertilizers. The site was chosen for its proximity to lignite (brown coal) mines; the chemical plants at the site were based mainly on syngas (hydrogen and carbon monoxide). In 1920, the Leuna plant was commissioned for the commercial hydrogenation of lignite, and production began on April 1, 1927. The site (property of IG Farben after 1926) was rapidly expanded in the 1920s and 1930s, with plants producing methanol, synthetic petrol derived from the hydrogenation of lignite, amines and detergents.
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