bromine

American  

[broh-meen, -min] / ˈbroʊ min, -mɪn /

noun

Chemistry.

1. an element that is a dark-reddish, fuming, toxic liquid and a member of the halogen family: obtained from natural brines and ocean water, and used chiefly in the manufacture of gasoline antiknock compounds, pharmaceuticals, and dyes. Br; 79.909; 35; 3.119 at 20°C.

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bromine British  

/ ˈbrəʊmiːn, -mɪn /

noun

1. a pungent dark red volatile liquid element of the halogen series that occurs in natural brine and is used in the production of chemicals, esp ethylene dibromide. Symbol: Br; atomic no: 35; atomic wt: 79.904; valency: 1, 3, 5, or 7; relative density 3.12; density (gas): 7.59 kg/m³; melting pt: –7.2°C; boiling pt: 58.78°C

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bromine Scientific  

/ brō′mēn /

1. A reddish-brown volatile element of the halogen group found in compounds occurring in ocean water. The pure form is a nonmetallic liquid that gives off a highly irritating vapor. It is used to make dyes, sedatives, and photographic film. Atomic weight 79.904; atomic number 35; melting point 7.2°C; boiling point 58.78°C; specific gravity 3.12; valence 1, 3, 5, 7.

2. See Periodic Table

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Etymology

Origin of bromine

1827; < French brome bromine (< Greek brômos stench) + -ine ²

Example Sentences

Ozone depletion begins when certain chlorine- and bromine-containing compounds reach the stratosphere, where intense UV radiation breaks them apart and releases reactive forms of chlorine and bromine.

From Science Daily

The results show that light groups of atoms such as CH2 are ejected first, while the heavier atoms -- bromine and chlorine -- are left behind and therefore separate more slowly.

From Science Daily

Occasionally, the ions also form toxic bromine gas.

From Science Daily

Researchers examined 203 consumer products for bromine, a key indicator of the use of flame retardants.

From Salon

This process poses challenges including selective addition of bromine at the ortho position, difficulty working with certain chemical groups, and the tendency of o-bromobenzenethiols to oxidize easily in air releasing unpleasant odors.

From Science Daily