caption death_date death_place work_institution birth_place birth_date known_for image article_title name alma_mater
heinrich caro 11 september 1910 dresden , germany university of strasbourg , kaiserliche biologische anstallt dahlem posen , prussia , now poznań , poland 13 february 1834 erlenmeyer azlactone synthesis heinrich caro ca1900.jpg heinrich caro
 heinrich caro university of göttingen , -lrb- 1888 -rrb-
heinrich caro

heinrich caro -lrb- february 13 , 1834 in posen , prussia germany now poznań , poland -- september 11 , 1910 in dresden -rrb- , was a german chemist .
he started his study of chemistry at the friedrich wilhelms university and later chemistry and dyeing in berlin at the `` royal trades institute '' .
on the initiative of nicolaus druckenmüller , he trained as a calico printer in germany , worked at troost 's calico printing works in mülheim and then worked at the chemical firm roberts , dale in manchester .
during this time he improved the analysis of madder lake .
after he returned to germany he conducted his military service in 1857 and 1858 .
he worked in the laboratory of jacques meyer the father of viktor meyer in berlin .
in 1858 he was able to return to mühlheim where he was not able to conduct his work .
he joined the chemical firm roberts , dale in manchester which he knew from his former visit .
during his time in england he improved the extraction of mauveine from the residues of the synthesis and developed a synthesis for aniline red and other dyes .
in 1861 caro returned to germany and stayed at the laboratory of robert bunsen until he joined the chemische fabrik dyckerhoff clemm & co. .
this chemical company later became basf .
caro was responsible for indigo research at basf and he and adolf von baeyer synthesised the first indigo dye in 1878 .
caro also patented the dye alizarin on behalf of basf .
he was the first to isolate acridine and `` caro 's acid '' -lrb- peroxymonosulfuric acid -rrb- is named after him .
