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(Gr. beryllos, beryl; also called Glucinium or Glucinum, Gr. glykys, sweet) Discovered
as the oxide by Vauquelin in beryl and in emeralds in 1798. The metal was isolated in 1828
by Wohler and by Bussy independently by the action of potassium on beryllium chloride.
Beryllium is found in some 30 mineral species, the most important of which are
bertrandite, beryl, chrysoberyl, and phenacite. Aquamarine and emerald are precious forms
of beryl. Beryl and bertrandite are the most important commercial sources of the element
and its compounds. Most of the metal is now prepared by reducing beryllium fluoride with
magnesium metal. Beryllium metal did not become readily available to industry until 1957.
The metal, steel gray in color, has many desirable properties. As one of the lightest
of all metals, it has one of the highest melting points of the light metals. Its modulus
of elasticity is about one third greater than that of steel. It resists attack by
concentrated nitric acid, has excellent thermal conductivity, and is nonmagnetic. It has a
high permeability to X-rays and when bombarded by alpha particles, as from radium or
polonium, neutrons are produced in the amount of about 30 neutrons/million alpha
At ordinary temperatures, beryllium resists oxidation in air, although its ability to
scratch glass is probably due to the formation of a thin layer of the oxide.
Beryllium is used as an alloying agent in producing beryllium copper, which is
extensively used for springs, electrical contacts, spot-welding electrodes, and
non-sparking tools. It is applied as a structural material for high-speed aircraft,
missiles, spacecraft, and communication satellites. Other uses include windshield frame,
brake discs, support beams, and other structural components of the space shuttle.
Because beryllium is relatively transparent to X-rays, ultra-thin Be-foil is finding
use in X-ray lithography for reproduction of micro-miniature integrated circuits.
Beryllium is used in nuclear reactors as a reflector or moderator for it has a low
thermal neutron absorption cross section.
It is used in gyroscopes, computer parts, and instruments where lightness, stiffness,
and dimensional stability are required. The oxide has a very high melting point and is
also used in nuclear work and ceramic applications.
Beryllium and its salts are toxic and should be handled with the greatest of care.
Beryllium and its compounds should not be tasted to verify the sweetish nature of
beryllium (as did early experimenters). The metal, its alloys, and its salts can be
handled if certain work codes are observed, but no attempt should be made to work with
beryllium before becoming familiar with proper safeguards.
Sources: CRC Handbook of Chemistry
and Physics and the American Chemical Society.
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