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was below 1 e3t per year in all other continents. It is commercially available in solutions of various concentrations between 85 and 99 w/w %. as of 2009, the largest producers are BASF, Eastman Chemical Company, LC Industrial, and Feicheng Acid Chemicals, with the largest production facilities in Ludwigshafen (200 e3t per year, BASF, Germany),

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