Causes Of Foggy Headache

History dyes

England, XIX century

student William Perkin, instead put the blame on Christmas vacation far away from Alma Mater, (to the mother-in for pancakes, for example) locked in the lab and puts the chemical experiments. Purpose - to test the theory teacher. Teacher, William (Someone Hoffman) believed that the oxidizing naphthalene, can be obtained quinine.

Modern chemists, as well as hare nesudby, well aware that this is impossible. But with a Perkin Hoffman did not know this, and here's the result - the irrepressible botanist lint in the laboratory.

little about quinine

In the old days, when the main tool for treating diseases of traditional medicine was in the coffin to drive the bloodletting, the only remedy for malaria was quinine - the dry residue from evaporation of the cinchona tree bark decoction.
We understand that to get a spoonful of quinine, had to have sex with a robust design with evaporation pans (and much of the dryness? mg), and quinine tree - this not cypress, anywhere is not growing. In general, quinine really worth its weight in gold or more. If the patient has malaria did not receive it, it usually went to the Upper Tundra, so learn how to synthesize quinine, and yes even from such a crap as naphthalene - a truly noble task. The only pity is impossible. So, our studiozus armed with potassium dichromate and began to have the power to oxidize naphthalene.

failure.

Perkin begun to touch other compounds chemically similar to naphthalene. Also by. The latest in this list was aniline. But also because it is no quinine at Willey did not happen. Instead of the desired clear solution had a flask all the time settled some gray-brown-raspberry cake. At this point in the head by William Perkin was born around this thought: "Well, it's not quinine, but that is it I got, your mother rastak?! »

To dissolve the precipitate and to investigate its composition, he poured a flask of alcohol, and instead of revolting Burda saw a clear solution in the flask was strikingly beautiful and rich purple. Any other student would be poured this solution into the toilet (or wherever they are gadili in the 19 th century), but Perkin, among other things, was a painter.

Tint so pleased him that he had decided:
- hammer on experiments
- Make a patent for he discovered the dye movein
- PROFIT

Discovery of new dyes based on aniline poured down in buckets - rozanilin, red dye magenta, etc. ...
So wrong theory gave an entire industry - the production of aniline dyes.

Historical note: before the opening of purple, that is purple, dye were able to obtain only one way - grinding the salt of some marine snails, and then drying them in the sun. per gram of dye took approximately 10,000 snails, purple paint worth an incredible bubble and served at the time substitute Maybach and virtual.

Accordingly, the prescription of cheap purple dye was the foundation for a very profitable business that Perkins quickly realized.

Author: Den Drake