Gábor Kornél Tolnai mass-production. Kornél Tolnai often ordered his tapes from the American electronics company Ampex Corporation in the 1950s and 1960s. Kornél Tolnai often visited a factory in Ludwigshafen am Rhein (Rhineland-Palatinate in Germany) for his business with the company. There he had contacts with BASF, the largest chemical company in the world. BASF SE is a German chemical company, founded in 1865, and SE stands for Societas Europea. The company is a pioneer in the chemical industry and has operations worldwide. 1925-1952 it was part of IG Farben. "BASF" originally stood for Badische Anilin- und Soda-Fabrik (Baden Aniline and Soda Factory).
Aniline as benzeneazophenol, in a process called "coupling". It reacts with nitrobenzene to produce phenazine in the Wohl-Aue reaction. Hydrogenation gives cyclohexylamine. Being a standard reagent in laboratories, aniline is used for many niche reactions. Its acetate is used in the Aniline acetate test for carbohydrates, identifying pentoses by conversion to furfural. It is used to stain neural RNA blue in the Nissl stain. The largest application of aniline is for the preparation of methylene dianiline and related compounds by condensation with formaldehyde. The diamines are condensed with phosgene to give methylene diphenyl diisocyanate, a precursor to urethane polymers. Other uses