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Justus von Liebig, a famous German chemist and chemical educator, 1803 was born on May 2nd in Daams, Germany, into a small businessman's family dealing in medicines, dyes and chemical reagents. As a child, Justus von Liebig and his father made their own medicines and pigments, and later became apprentices of pharmacists. As a teenager, Justus von Liebig was tired of the formal and formulaic old education in German schools at that time, but he loved reading chemistry books and doing chemistry experiments.

1820 studied at Bonn University. He went to Bonn, entered He Run University, and received his doctorate at 1822. 1822 received a doctorate in philosophy. In the same year, when I went to Paris, I often listened to the speeches of chemists such as Gay-Lussac and Dulong. Soon he was working in Guy Lussac's laboratory. 1824, he returned to Germany, became a professor of chemistry at Giessen University, and founded Giessen Laboratory.

In 1824, a series of fulvic acid compounds were studied. Weller was studying cyanide. Their article was published in a magazine edited by Guy Lussac, who pointed out that these two different compounds have the same molecular formula. This is the first time that chemists have found that different compounds have the same molecular formula, hence the term "isomer". At the same time, I also took this opportunity to become lifelong friends with Weller.

Since the beginning of this year, he has been teaching in a university in a small town called Giessen, and he took the lead in setting up a general laboratory for students. Justus von Liebig devoted himself to organic chemistry with great enthusiasm. 1840 was elected as a member of the royal society. 1842 was elected honorary academician of French Academy of Sciences. Justus von Liebig is a professor at the University of Munich. At that time, Central Europe was in a reactionary period, and Justus von Liebig was wanted for holding liberal views and actively participating in political activities.

He had to leave Bonn for Paris, where he was helped and recommended by Humboldt, a famous German scientist, and worked in a laboratory in Gay-Lussac. He died in Munich on April 1873.