Antimony is a chemical element with the symbol Sb and atomic number 51.
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22 Facts About Antimony
2.
Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl.
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3.
Antimony trioxide is a prominent additive for halogen-containing flame retardants.
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4.
Antimony is a member of group 15 of the periodic table, one of the elements called pnictogens, and has an electronegativity of 2.
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5.
Antimony is stable in air at room temperature, but reacts with oxygen if heated to produce antimony trioxide, Sb2O3.
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Arabic6.
Antimony is a silvery, lustrous gray metalloid with a Mohs scale hardness of 3, which is too soft to mark hard objects.
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7.
Antimony has two stable isotopes: Sb with a natural abundance of 57.
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8.
Antimony compounds are often classified according to their oxidation state: Sb and Sb.
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9.
Antimony pentasulfide is non-stoichiometric and features antimony in the +3 oxidation state and S–S bonds.
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10.
Antimony was frequently described in alchemical manuscripts, including the Summa Perfectionis of Pseudo-Geber, written around the 14th century.
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11.
Antimony can be isolated from the crude antimony sulfide by reduction with scrap iron:.
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12.
Antimony is isolated from the oxide by a carbothermal reduction:.
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13.
Antimony is mainly used as the trioxide for flame-proofing compounds, always in combination with halogenated flame retardants except in halogen-containing polymers.
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14.
Antimony is used in antifriction alloys, in bullets and lead shot, electrical cable sheathing, type metal, solder, in pewter, and in hardening alloys with low tin content in the manufacturing of organ pipes.
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15.
Antimony has a nourishing or conditioning effect on keratinized tissues in animals.
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16.
Antimony-based drugs, such as meglumine antimoniate, are considered the drugs of choice for treatment of leishmaniasis in domestic animals.
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17.
Antimony sulfide is used in the heads of some safety matches.
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18.
Antimony sulfides help to stabilize the friction coefficient in automotive brake pad materials.
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19.
Antimony is used in bullets, bullet tracers, paint, glass art, and as an opacifier in enamel.
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20.
Antimony-124 is used together with beryllium in neutron sources; the gamma rays emitted by antimony-124 initiate the photodisintegration of beryllium.
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21.
Antimony is not quantitatively reduced to antimony in the cell, and both species exist simultaneously.
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22.
Antimony compounds are used as catalysts for polyethylene terephthalate production.
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