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bromine
[ broh-meen, -min ]
noun
- 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.
bromine
/ ˈbrəʊmiËn; -mɪn /
noun
- 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
bromine
/ ²ú°ùÅ′³¾Å§²Ô /
- 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.
- See Periodic Table
˜yÐÄvlog History and Origins
˜yÐÄvlog History and Origins
Origin of bromine1
Example Sentences
In this process, the X-ray photons trigger a "molecular catapult effect": light atomic groups are ejected first, similar to projectiles fired from a catapult, while the heavier atoms -- bromine and chlorine -- separate more slowly.
Occasionally, the ions also form toxic bromine gas.
Researchers examined 203 consumer products for bromine, a key indicator of the use of flame retardants.
Conventional methods to produce o-bromobenzenethiols involve addition of bromine to aniline, then using diazonium intermediates for addition of sulfur.
"And then the bromine, which is part of the salt, actually penetrates into the three-dimensional layer in a controllable way."
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