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#181 |
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* Colour: lead grey
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#182 |
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* Classification: Metallic
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#183 |
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* Availability:
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#184 |
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beryllium is available in several forms including foil, lump, and powder. Small and large samples of beryllium foil can be purchased from Advent Research Materials via their web catalogue.
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#185 |
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Beryllium is a Group 2 (IIA) element. At ordinary temperatures, beryllium resists oxidation in air. Its ability to scratch glass is probably due to the formation of a thin layer of the oxide. Aquamarine and emerald are precious forms of the mineral beryl, [Be3Al2(SiO3)6].
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#186 |
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beryllium sheet
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#187 |
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This sample is from The Elements Collection, an attractive and safely packaged collection of the 92 naturally occurring elements that is available for sale.
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#188 |
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Isolation
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#189 |
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Here is a brief summary of the isolation of beryllium.
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#190 |
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Beryllium metal is available commercially and so would never normally be made in the laboratory. Its extraction from ores is complex. The mineral beryl, [Be3Al2(SiO3)6] is the most important source of beryllium. It is roasted with sodimu hexafluorosilicate, Na2SiF6, at 700°C to form beryllium fluoride. This is water soluble and the beryllium may be precipitated as the hydroxide Be(OH)2 by adjustment of the pH to 12.
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#191 |
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Pure beryllium may be obtained by electrolysis of molten BeCl2 containing some NaCl. The salt is added since the molten BeCl2 conducts very poorly. Another method involves the reduction of beryllium fluoride with magnesium at 1300°C.
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#192 |
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BeF2 Mg → MgF2 Be
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#193 |
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Beryllium, atomic number 4, is a brittle, steel-gray metal found as a component of coal, oil, certain rock minerals, volcanic dust, and soil. Elemental beryllium is the second lightest of all metals and is used in a wide variety of applications. In its elemental form beryllium exhibits the unique properties of being light weight and extremely stiff, giving the metal several applications in the aerospace, nuclear, and manufacturing industries. In addition, beryllium is amazingly versatile as a metal alloy where it is used in dental appliances, golf clubs, non-sparking tools, wheel chairs, and electronic devices.
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#194 |
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The following questions link to safety and health information relevant to beryllium in the workplace.
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#195 |
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Standards What standards apply?
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