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|General Characteristics||Health Hazards||Material Recommendations|
|A colorless, nonflammable and odorless gas.||A Simple asphyxiant||Normal materials can be used.|
|TLV-TWA||Flammable Limits||DOT Class / Label|
|None Established||Nonflammable||2.2 / Nonflammable|
|Molecular Weight||Specific Gravity||Specific Volume|
|131.3||4.560 @ 70° F||2.9 cu.ft./lb @ 70° F|
|CGA Valve Outlet||CAS Registry No.||UN Number|
|National Stock Number (NSN) Applicable to Xenon||MIL Specs/ Fed Specs
MSDS for Xenon
@ 70 F
|Uses: Xenon is used as a light source in special applications and an important application is as a fill for thyratron and half-wave rectifier tubes.
Xenon occurs in slight traces in gases within the Earth and is present to an extent of about 0.0000086 percent, or about one part in 10,000,000, by volume of dry air. Xenon is manufactured on a small scale by the fractional distillation of liquid air. The British chemists Sir William Ramsay and Morris W. Travers isolated the element (1898) by repeated fractional distillation of the noble gas krypton, which they had discovered six weeks previously.
The element xenon is used in lamps that produce intense, extremely short flashes of light, such as stroboscopes and lights for high-speed photography. When a charge of electricity is passed through the gas at low pressure, it emits a flash of bluish-white light; at higher pressures white light resembling daylight is emitted. Xenon flash lamps are used to activate ruby lasers.
Natural xenon is a mixture of nine stable isotopes in the following percentages; xenon-124 (0.096); xenon-126 (0.090); xenon-128 (1.92); xenon-129 (26.44); xenon-130 (4.08); xenon-131 (21.18); xenon-132 (26.89); xenon-134 (10.44); and xenon-136 (8.87). The xenon found in some stony meteorites shows a large proportion of xenon-129, believed to be a product of radioactive decay of iodine-129, whose half-life is 17,000,000 years. Study of the xenon-129 content of meteorites casts light on the history of the solar system. More than a dozen radioactive xenon isotopes produced by fission of uranium and other nuclear reactions are known. For example, xenon-135 (9.2-hour half-life) is produced by uranium fission in nuclear reactors, where it is troublesome because it absorbs fission-producing neutrons.
Noble gases were thought to be chemically inert until Neil Bartlett produced (1962) the first noble-gas compound, a red crystalline solid, xenon hexafluoroplatinate(V), that can best be
Atomic number 54
Atomic weight 131.30
Melting point -111.9° C (-169.6° F)
Boiling point -107.1° C (-160.6° F)
Density (1 atm, 0 C) 5.887 g/litre
Valence 0, 2, 4, 6, 8
Electronic configuration 2-8-18-18-8 or (Kr)4d105s25p6
The mass numbers of the known isotopes of xenon range from 118 to 144; nine of these numbers correspond to stable isotopes. The xenon isotopes produced in the greatest amount
Xenon is the least volatile of the noble gases obtainable from the air. Its purification has been mentioned above (see Krypton). Numerous compounds of xenon have been prepared
Last Updated: 98 AUG 10