The anthraquinone process was developed by a German chemical company with a capital located in which city?
Ludwigshafen
Title: BASF
Passage: BASF SE is a German chemical company and the largest chemical producer in the world.  The BASF Group comprises subsidiaries and joint ventures in more than 80 countries and operates six integrated production sites and 390 other production sites in Europe, Asia, Australia, the Americas and Africa.  Its headquarters is located in Ludwigshafen, Germany.  BASF has customers in over 190 countries and supplies products to a wide variety of industries.  Despite its size and global presence, BASF has received relatively little public attention since it abandoned manufacturing and selling BASF-branded consumer electronics products in the 1990s.
Title: Paul Mendelssohn Bartholdy
Passage: Paul Mendelssohn Bartholdy (born "Paul Felix Abraham Mendelssohn Bartholdy"; 18 January 1841, Leipzig – 17 February 1880, Berlin) was a German chemist and a pioneer in the manufacture of aniline dye.  He co-founded the Aktien-Gesellschaft für Anilin-Fabrikation (AGFA), a German chemical company.
Title: Anthraquinone process
Passage: The anthraquinone process is a process for the production of hydrogen peroxide, which was developed by BASF.  The industrial production of hydrogen peroxide is based on the reduction of oxygen, as in the direct synthesis from the elements.  Instead of hydrogen itself, however, a 2-alkyl-anthrahydroquinone, which is generated before from the corresponding 2-alkyl-anthraquinone by catalytic hydrogenation with palladium.  Oxygen and the organic phase react under formation of the anthraquinone and hydrogen peroxide.  Among other alkyl groups (R) ethyl- and tert.  Butyl are used, e.g., 2-ethylanthraquinone.
Anthraquinone process BASF