Hennig Brand

Hennig Brand

Hennig Brand was a German alchemist from Hamburg. Around 1669, he was searching for something called the "philosopher's stone." This was believed to change ordinary metals into gold.

During his work, Brand made an accidental discovery. He found a new chemical element called phosphorus. This was a big discovery because phosphorus was one of the first elements found in modern times. It is still useful today. Brand’s story shows how important discoveries can sometimes happen by accident.

Biography

Hennig Brand was born around 1630. Some sources say he came from a family of workers and had worked as a young glassmaker. Others say he was from a higher social class. He served as a junior army officer during the Thirty Years' War. After leaving the army, he used money from his first wife to study alchemy.

Brand was one of many people searching for a substance called the philosopher's stone. During his experiments, he accidentally discovered the element phosphorus. He is believed to have died around 1692 or 1710.

Discovery of phosphorus

Hennig Brand was looking for a special substance called the "philosopher's stone." People thought this substance could turn cheap metals into gold. He tried many mixtures, including using urine with other materials, following an old recipe from a book.

In about 1669, Brand heated a mixture made from boiled-down urine. Suddenly, glowing fumes filled his furnace, and a liquid that burst into flames dripped out. He caught this liquid, and it solidified while glowing with a pale-green light. This was phosphorus, named for its ability to give off light. Brand kept his discovery secret at first but later sold the recipe for making phosphorus. Other scientists later discovered the same thing.

The process involved letting urine stand, boiling it down, and heating it strongly to produce phosphorus. The chemical reaction created phosphorus from phosphates in the urine when heated with carbon. Though Brand's method used a lot of urine to make only a small amount of phosphorus, it was an important discovery.