The color of success: Ciba PF7 Fuchsin Sample Book II, L. Peyer, 1863.
It was an icy, cloudy day in the winter of 1859. The wind whistled across the closely spaced roofs of “lesser Basel,” as the Kleinbasel side of the Rhine was then called. In the middle of this densely populated area, on the lower Rebgasse, Alexander Clavel had taken over a dye factory and the associated laboratory a few years earlier. In the farthest corner of the factory, the French chemist and Basel resident was now working on his laboratory instruments and dyeing vats.
Clavel was in a hurry; shortly before, he had received a brand-new recipe for the artificial red dye fuchsin, a color looking much like pink, from his French relatives in Lyon, the Renard brothers. Clavel knew that he held the key to fame and fortune. He was determined to be the first to produce the new dye in Switzerland – and he succeeded.
Without realizing it, Clavel laid an important foundation in his small Basel factory for Switzerland’s soon-to-be-strong chemical industry, as Novartis company archivist Walter Dettwiler knows. For years, Dettwiler has been intensively studying the development of Basel’s industry and its importance in the international arena. “The middle of the 19th century was a time of transition. Until then, only natural dyes such as indigo or purple had been known. The raw materials for these came from far away and production was costly. When the first artificial dye was discovered in England in 1856, a kind of gold-rush atmosphere broke out, and everyone wanted to earn money from these new dyes.”
The artificially produced dyes were also called aniline dyes because the nitrogen compound aniline was one of the main components in dye synthesis. The aniline, in turn, was obtained from coal tar. This substance was available in abundance in Basel.
At that time, gas obtained from coal was used as a means of street lighting in Basel. Chemists used the cheap tar residues from the gas works to produce their new dyes. These were much more resistant to washing and sunlight than the natural dyes. In addition, it was now possible to produce completely different, brightly shining or dark and strong shades of color.
None of this had been possible before. Walter Dettwiler describes the effect that the new dyes had in Basel as follows: “We know from old records that Clavel seized his opportunity and was able to sell the new red fuchsin dye with great success. Demand was so high that he soon replaced all natural dyes with synthetic dyes.” Legally, too, everything was in order. Although fuchsin dye was patented in France, Clavel was able to produce the dye in Switzerland. This was because there was no patent law here in the mid-19th century that would have protected foreign inventions.
Moving away from Kleinbasel
Clavel’s economic success, however, also brought him trouble. Residents living near the factory complained loudly about the toxic arsenic fumes that were produced during manufacture.
Their protest to the Basel City Council about the “pestilential stench” eventually led to a ban on production. Alexander Clavel reacted very quickly to this prohibition, as Walter Dettwiler explains: “Of course, Clavel did not want to lose the lucrative dye business. He therefore moved his business to the Klybeck district outside the city limits in 1864. This is where his entirely new and larger dye business was established.”
Clavel’s success also attracted other entrepreneurs. Just a few months later, Armand Gerber, an entrepreneur from Alsace, and Wilhelm Uhlmann from Basel built another aniline dye company on Klybeckstrasse next to Clavel’s dye factory.