Nonmetallic chemical element, chemical symbol Br, atomic number 35. One of the halogens, it is a deep red, fuming liquid at ordinary temperatures (freezing point 19 °F [7.2 °C]; boiling point 138 °F [59 °C]) that contains diatomic molecules (Br), and it does not occur free in nature. It is obtained from seawater and brines or salt beds. Extremely irritating and toxic, bromine is a strong oxidizing agent (see oxidation-reduction). Its compounds, in which it may have valence 1, 3, 5, or 7, have many uses, including as petroleum additives (ethylene dibromide), in photographic emulsions (silver bromide), as sedatives, and in flour (potassium bromate).

This entry comes from Encyclopædia Britannica Concise.
For the full entry on bromine, visit

Seen & Heard

What made you look up bromine? Please tell us what you were reading, watching or discussing that led you here.

Get Our Free Apps
Voice Search, Favorites,
Word of the Day, and More
Join Us on FB & Twitter
Get the Word of the Day and More