Aniline Germany. Today, the name of BASF, originally "Badische Anilin- und Soda-Fabrik" (English: Baden Aniline and Soda Factory), now the largest chemical supplier, echoes the legacy of the synthetic dye industry, built via aniline dyes and extended via the related azo dyes. The first azo dye was aniline yellow. In the late 19th century, aniline emerged as an analgesic drug, its cardiac-suppressive side effects countered with caffeine. During the first decade of the 20th century, while trying to modify synthetic dyes to treat African sleeping sickness, Paul Ehrlich – who had coined the term "chemotherapy" for his "magic bullet" approach to
Aniline aniline, the bromine water is decolourised and a white precipitate of 2,4,6-tribromophenylamine is formed. The largest scale industrial reaction of aniline involves its alkylation with formaldehyde. An idealized equation is shown: The resulting diamine is the precursor to 4,4'-MDI and related diisocyanates. Aniline is a weak base. Aromatic amines such as aniline are, in general, much weaker bases than aliphatic amines. Aniline reacts with strong acids to form anilinium (or phenylammonium) ion (CH-NH). Traditionally, the weak basicity of aniline is attributed to a combination of inductive effect from the more electronegative sp carbon and resonance effects, as the lone pair