Mannheim of 1848, the city was a centre for political and revolutionary activity. In 1865, Friedrich Engelhorn founded the "Badische Anilin- und Soda-Fabrik" (Baden Aniline and Soda Factory, BASF) in Mannheim, but the factory was constructed across the Rhine in Ludwigshafen because Mannheim residents feared air pollution from its operations. From this dye factory, BASF has developed into the largest chemical company in the world. After opening a workshop in Mannheim in 1871 and patenting engines from 1878, Karl Benz patented the first motor car in 1886. He was born in Mühlburg (now part of Karlsruhe). The Schütte-Lanz company, founded by
Aniline Yellow is also used in insecticides, lacquers, varnishes, waxes, oil stains, and styrene resins. It is also an intermediate in synthesis of other dyes, e.g. chrysoidine, indulines, Solid Yellow, and Acid Yellow. Aniline Yellow was involved in the 1981 Spanish Toxic Oil Syndrome (TOS). A Madrid-based company imported denaturated rapeseed oil, dyed by aniline yellow to mark it as unsuitable for human consumption, to be used as a fuel in steel mills. However, the company distilled the oil to remove the dye, and sold it as a much more valuable olive oil for cooking. The result was a rash of pneumonia-type