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Rhenium , including Technical Data, Safety Data and its high purity properties, research, applications and other useful facts are discussed below. Scientific facts such as the atomic structure,ionization energy, abundance on Earth, conductivity and thermal properties are included.
Rhenium is the fourth densest element exceeded only by that of platinum, iridium, and osmium . It has the second highest melting point exceeded only by tungsten and carbon . Rhenium is available as metal and compounds with purities from 99% to 99.999% (ACS grade to ultra-high purity); metals in the form of foil, sputtering target, and rod, and compounds as submicron and nanopowder. Because of this, thermocouples made ofTungsten/Rhenium alloy is are used when temperatures will rise to 2000 C and rhenium wire is used in photoflash lamps for photography. It is widely used as filaments for mass spectrographs and ion gauges. Rhenium is also used as an electrical contact material because it has good wear resistance and withstands arc corrosion. Rhenium-molybdenum alloys are superconductive at 10 Kelvin. Rhenium catalysts are are used for oranic chemical hydrogenation. Rhenium is added to platinum catalysts that are used to produce lead-free gasoline. Due to its high melting point, it is in high-temperature superalloys used for aerospace and filaments for mass spectrographs. |
Rhenium facts, including appearance, CAS #, and molecular formula and safety data, research and properties are available for many specific states, forms and shapes on the product pages listed to the left. Elemental or metallic forms include pellets, rod, wire and granules for evaporation source material purposes.Nanoparticles and nanopowders provide ultra high surface area which nanotechnology research and recent experiments demonstrate function to create new and unique properties and benefits.
Oxides are available in forms including powders and dense pellets for such uses as optical coating and thin film applications.Oxides tend to be insoluble. Fluoridesare another insoluble form for uses in which oxygen is undesirable such as metallurgy, chemical and physical vapor deposition and in some optical coatings. Rhenium is available in soluble forms including chlorides, nitrates and acetates. These compounds are also manufactured as solutions at specified stoichiometries.
Rhenium is a Block D, Group 7, Period 6 element. The number of electrons in each of Rhodium‘s shells is 2, 8, 18, 32, 13, 2 and its electronic configuration is [Xe] 4f14 5d5 6s2. In its elemental form rhenium‘s CAS number is 7440-15-5. The rhenium atom has a radius of 137.1.pm and it‘s Van der Waals radius is 200.pm. The toxicity of Rhenium has not yet been established .
All elemental metals, compounds and solutions may be synthesized in ultra high purity (e.g. 99.999%) for laboratory standards, advanced electronic, thin fillm deposition usingsputtering targets and evaporation materials, metallurgy and optical materials and other high technology applications. Information is provided for stable (non-radioactive) isotopes.Organo-Metallic Rhenium compounds are soluble in organic or non-aqueous solvents. SeeAnalytical Services for information on available certified chemical and physical analysis techniques including MS-ICP, X-Ray Diffraction, PSD and Surface Area (BET) analysis.
Rhenium was first discovered by Walter Noddack in 1925 in the Rhine region of Germany. The name Rhenium originates from the Latin word ‘Rhenus‘ meaning "Rhine" after the place of discovery.
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