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13773-81-4QGOSZQZQVQAYFS-UHFFFAOYSA-N13773-81-4DTXSID7065623colorless solid; decomposes rapidly at room temp; tetr, a=0.6533 nm, c=0.5831 nm; vapor pressure at 0°C is 29mm Hg; thermodynamically unstable, can be stored at 78°C; prepared by electrical discharge of Kr and F2 at 183°C; used in certain types of electric light bulbs [MER06] [KIR78] [COT88]
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용도As gas filler in special purpose electric bulbs. To initiate and sustain the arc in metal-vapor discharge tubes, such as mercury and sodium vapor lamps. To determine surface areas of fine solids by adsorption techniques.
Krypton difluoride may be prepared by the reaction of krypton with fluorine in an electric discharge at low pressure and liquid oxygen temperature. Also it may be made by irradiating krypton with ultraviolet rays in a fluorine—argon gas mixture at liquid helium temperature (-196°F). Kr + F2 → KrF2 The product can be stored at -78°C without decomposition.
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