| rdfs:comment | - Bromine is a halogen, and is less reactive than chlorine and more reactive than iodine. Bromine is slightly soluble in water, and highly soluble in carbon disulfide, aliphatic alcohols (such as methanol), and acetic acid. It bonds easily with many elements and has a strong bleaching action. Certain bromine-related compounds have been evaluated to bioaccumulate in living organisms. Bromine is a powerful oxidizing agent. It reacts vigorously with metals, especially in the presence of water, as well as most organic compounds, especially upon illumination. The diatomic element Br2 does not occur naturally. Instead, bromine exists exclusively as bromide salts in diffuse amounts in crustal rock.
- One of only five chemical elements which can be solid, liquid, or gaseous at temperatures and pressures commonly found at Earth's surface and at the same time, bromine readily combines with the arcane metals and so is seldom found in its pure state. Bromine is Greek for fragrant.
- Bromine (symbol Br) is a chemical element, atomic number 35 on the periodic table.
- Bromine is a chemical element. Symbol:Br Atomic Number:35 Apperance:Metallic luster(Solid),red-brown(gas/liquid) Boiling Point:137.8F(58.8C) Standard Atomic Weight:79.904 molar mass Melting Point:19F(-7.2C) Element Category:Halogen
- Bromine (from Greek: βρῶμος, brómos, meaning "strong-smelling" or "stench") is a chemical element with symbol Br , and atomic number 35. It is a halogen. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 1825–1826. Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, with properties between those of Cl and I . Free bromine does not occur in nature, but occurs as colorless soluble crystalline mineral halide salts, analogous to table salt.
- Balard found bromide chemicals in the ash of sea weed from the salt marshes of Montpellier in 1826. The sea weed was used to produce iodine, but also contained bromine. Balard distilled the bromine from a solution of seaweed ash saturated with chlorine. The properties of the resulting substance resembled that of an intermediate of chlorine and iodine; with those results he tried to prove that the substance was iodine monochloride (ICl), but after failing to do so he was sure that he had found a new element and named it muride, derived from the Latin word muria for brine.
- Bromine is a chemical element (atomic number 35) that, along with mercury, is one of a very few elements that are a liquid at normal temperatures and pressures. However, unlike mercury, it has a very low boiling point and will actually turn into a vapour at 58.8 C. In addition, like water, it will also evaporate at normal temperatures below its boiling point. In its liquid state, it is a brownish-red color. However, it is very reactive and readily combines with other elements to form compounds. As such, it is never found in its liquid state in nature. Although it is fairly rare, because its compounds are highly soluble in water, it is concentrated in the Earth's oceans.
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| abstract | - Bromine is a halogen, and is less reactive than chlorine and more reactive than iodine. Bromine is slightly soluble in water, and highly soluble in carbon disulfide, aliphatic alcohols (such as methanol), and acetic acid. It bonds easily with many elements and has a strong bleaching action. Certain bromine-related compounds have been evaluated to bioaccumulate in living organisms. Bromine is a powerful oxidizing agent. It reacts vigorously with metals, especially in the presence of water, as well as most organic compounds, especially upon illumination. The diatomic element Br2 does not occur naturally. Instead, bromine exists exclusively as bromide salts in diffuse amounts in crustal rock.
- One of only five chemical elements which can be solid, liquid, or gaseous at temperatures and pressures commonly found at Earth's surface and at the same time, bromine readily combines with the arcane metals and so is seldom found in its pure state. Bromine is Greek for fragrant.
- Bromine (symbol Br) is a chemical element, atomic number 35 on the periodic table.
- Balard found bromide chemicals in the ash of sea weed from the salt marshes of Montpellier in 1826. The sea weed was used to produce iodine, but also contained bromine. Balard distilled the bromine from a solution of seaweed ash saturated with chlorine. The properties of the resulting substance resembled that of an intermediate of chlorine and iodine; with those results he tried to prove that the substance was iodine monochloride (ICl), but after failing to do so he was sure that he had found a new element and named it muride, derived from the Latin word muria for brine. Carl Jacob Löwig isolated bromine from a mineral water spring from his hometown Bad Kreuznach in 1825. Löwig used a solution of the mineral salt saturated with chlorine and extracted the bromine with diethylether. After evaporation of the ether a brown liquid remained. With this liquid as a sample for his work he applied for a position in the laboratory of Leopold Gmelin in Heidelberg. The publication of the results was delayed and Balard published his results first. After the French chemists Louis Nicolas Vauquelin, Louis Jacques Thénard, and Joseph-Louis Gay-Lussac approved the experiments of the young pharmacist Balard, the results were presented at a lecture of the Académie des Sciences and published in Annales de Chimie et Physique. In his publication Balard states that he changed the name from muride to brôme on the proposal of M. Anglada. Other sources claim that the French chemist and physicist Joseph-Louis Gay-Lussac suggested the name brôme for the characteristic smell of the vapors. Bromine was not produced in large quantities until 1860. The first commercial use, besides some minor medical applications, was the use of bromine for the daguerreotype. In 1840 it was discovered that bromine had some advantages over the previously used iodine vapor to create the light sensitive silver halide layer used for daguerreotypy. Potassium bromide and sodium bromide were used as anticonvulsants and sedatives in the late 19th and early 20th centuries, until they were gradually superseded by chloral hydrate and then the barbiturates.
- Bromine (from Greek: βρῶμος, brómos, meaning "strong-smelling" or "stench") is a chemical element with symbol Br , and atomic number 35. It is a halogen. The element was isolated independently by two chemists, Carl Jacob Löwig and Antoine Jerome Balard, in 1825–1826. Elemental bromine is a fuming red-brown liquid at room temperature, corrosive and toxic, with properties between those of Cl and I . Free bromine does not occur in nature, but occurs as colorless soluble crystalline mineral halide salts, analogous to table salt. Bromine is rarer than about three-quarters of elements in the Earth's crust. The high solubility of bromide ions has caused its accumulation in the oceans, and commercially the element is easily extracted from brine pools, mostly in the United States, Israel and China. About 556,000 tonnes were produced in 2007, an amount similar to the far more abundant element magnesium. At high temperatures, organobromine compounds readily convert to free bromine atoms, a process which has the effect of stopping free radical chemical chain reactions. This effect makes organobromine compounds useful as fire retardants; more than half the bromine produced industrially worldwide each year is put to this use. Unfortunately, the same property causes sunlight to convert volatile organobromine compounds to free bromine atoms in the atmosphere, and an unwanted side effect of this process is ozone depletion. As a result, many organobromide compounds that were formerly in common use—such as the pesticide, methyl bromide—have been abandoned. Bromine compounds are still used for purposes such as in well drilling fluids, in photographic film, and as an intermediate in the manufacture of organic chemicals. Bromine has been long believed to have no essential function in mammals, but recent research suggests that bromine is necessary for tissue development. In addition, bromine is used preferentially over chlorine by one antiparasitic enzyme in the human immune system. Organobromides are needed and produced enzymatically from bromide by some lower life forms in the sea, particularly algae, and the ash of seaweed was one source of bromine's discovery. As a pharmaceutical, the simple bromide ion, Br−, has inhibitory effects on the central nervous system, and bromide salts were once a major medical sedative, before being replaced by shorter-acting drugs. They retain niche uses as antiepileptics.
- Bromine is a chemical element. Symbol:Br Atomic Number:35 Apperance:Metallic luster(Solid),red-brown(gas/liquid) Boiling Point:137.8F(58.8C) Standard Atomic Weight:79.904 molar mass Melting Point:19F(-7.2C) Element Category:Halogen
- Bromine is a chemical element (atomic number 35) that, along with mercury, is one of a very few elements that are a liquid at normal temperatures and pressures. However, unlike mercury, it has a very low boiling point and will actually turn into a vapour at 58.8 C. In addition, like water, it will also evaporate at normal temperatures below its boiling point. In its liquid state, it is a brownish-red color. However, it is very reactive and readily combines with other elements to form compounds. As such, it is never found in its liquid state in nature. Although it is fairly rare, because its compounds are highly soluble in water, it is concentrated in the Earth's oceans. Bromine does not appear to be required by living animals as a trace nutrient, but neither are its compounds very toxic. Some bromine compounds have pharmaceutical uses, and some were used as pharmaceuticals in the past, but were replaced by other drugs. These compounds are used as anti-parasite medication. However, pure bromine is very toxic and can cause burns and breathing problems.
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