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- Rubidium (Rb) Metal Synonyms:
rubidium metal, Rb, rubidium ingot, 103Rb, 37Rb, RB2, rubidium+, rubidium-103, rubidium-106, cas 7440-17-7, UN 1423,
Chemical Name: Rubidium
Chemical Formula: Rb
Rubidium is a soft, silvery-white metal belonging to the alkali group. It is second in the categories of most electropositive and most alkaline elements. Rubidium forms amalgams with mercury and alloys with gold, cesium, sodium, and potassium. It is highly reactive; igniting spontaneously in air and reacting vigorously in water. Rubidium has a high heat capacity and heat transfer coefficient.
Solid ingot sealed in glass
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Atomic Number
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37
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Molecular Weight (g/mol.)
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85.47
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Apparent Density (g/cm3)
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1.532
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Heat Of Fusion
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6.14
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Specific Heat @25°C (cal/g-°C)
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.0792
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Melting Point (°C)
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38.9
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Boiling Point (°C)
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688
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Thermal Conductivity (cal/s-cm°C)
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.07
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Mohs Hardness @20°C
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0.3
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Element Category
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alkali
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pH
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Particle Shape
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Color
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silvery white
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Crystallography
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hexagonal structure
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"Potential or current uses of rubidium include:
A Bose-Einstein condensate.
A working fluid in vapor turbines.
A getter in vacuum tubes.
A photocell component.
The resonant element in atomic clocks. This is due to the hyperfine structure of Rubidium's energy levels.
An ingredient in special types of glass.
The production of superoxide by burning in oxygen.
The study of potassium ion channels in biology.
Rubidium vapor has been used to make atomic magnetometers. 87Rb is currently being used, with other alkali metals, in the development of spin-exchange relaxation-free (SERF) magnetometers.
Rubidium is easily ionized, so it has been considered for use in ion engines for space vehicles (but caesium and xenon are more efficient for this purpose).
Rubidium compounds are sometimes used in fireworks to give them a purple color.
RbAg4I5 has the highest room temperature conductivity of any known ionic crystal. This property could be useful in thin film batteries and in other applications.
Rubidium has also been considered for use in a thermoelectric generator using the magnetohydrodynamic principle, where rubidium ions are formed by heat at high temperature and passed through a magnetic field. These conduct electricity and act like an armature of a generator thereby generating an electric current.
Rubidium, particularly 87Rb, in the form of vapor, is one of the most commonly used atomic species employed for laser cooling and Bose-Einstein condensation. Its desirable features for this application include the ready availability of inexpensive diode laser light at the relevant wavelength, and the moderate temperatures required to obtain substantial vapor pressures.
Rubidium has been used for polarizing 3He (that is, producing volumes of magnetized 3He gas, with the nuclear spins aligned toward a particular direction in space, rather than randomly). Rubidium vapor is optically pumped by a laser and the polarized Rb polarizes 3He by the hyperfine interaction. Spin-polarized 3He cells are becoming popular for neutron polarization measurements and for producing polarized neutron beams for other purposes." Source: Wikipedia
Vacuum sealed in glass ampoules
Yes. For further information please call the E.P.A. at +1.202.554.1404
CAS# 7440-17-7
1423
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