1824, Baglar, a 22-year-old young student from French College of Pharmacy, did many experiments when studying the mother liquor after extracting crystallized salt with water in his hometown of Montpellier. When chlorine gas is introduced, the mother liquor turns reddish brown. At first, when Bagra thought it was a liquid, he hoped to find chlorine iodide in these waste mother liquors. But he tried all kinds of methods but couldn't decompose the substance, so he came to the conclusion that it was a new element similar to chlorine and iodine. Baglar named it muride, from the Latin word muria (brine). 1826 On August 4th, a committee of French Academy of Sciences reviewed Bagra's report and affirmed his experimental results. Muride was renamed bromine, which comes from the Greek word Br not MOS (stench) because bromine has a pungent smell. Almost all halogens have similar smells. The Latin name and symbol Br of bromine came from this.

In fact, a few years before the discovery of bromine in Bagra, a bottle of reddish-brown liquid sample from Lahe Salt Spring in Crouzil was given to chemist Justus von Liebig for identification. Justus von Liebig concluded that it was "iodine chloride" without a detailed study. A few years later, when Justus von Liebig learned of the discovery of bromine, he immediately realized his mistake, put the bottle of liquid in a cupboard, and wrote "shame cupboard" on the cupboard to warn himself.

Bagra is a French chemist. 1802 was born in Montpellier, errol, and1802 died in Paris on March 30th, 1976. 1826 found a substance between chlorine and iodine. At first he thought it was a compound of chlorine and iodine, so he called it iodine chloride, but further experiments convinced him that it was a new element and called it bromine.