High-Quality Rubidium (Rb) from China - Leading Suppliers and Factory for Alkali Metals
Isotopes and nuclear properties
Preparation and storage
Rubidium metal is prepared industrially by vacuum thermal reduction: rubidium chloride (RbCl) is used as raw material, and metal calcium or magnesium is used as reducing agent, and reacts under high temperature (700–800℃) and low pressure (<0.1 Pa) conditions.
Rubidium needs to be stored in a dry inert atmosphere (such as argon) or mineral oil to avoid contact with oxygen and water.
Key applications
The microwave transition of Rb-87 is used in secondary rubidium atomic clocks (accuracy 10⁻¹¹–10⁻¹²), which are widely used in GPS, communication synchronization and financial transaction systems.
Rubidium vapor (especially Rb-85 and Rb-87) is a common medium for Bose-Einstein condensation (BEC) experiments, and is used for cold atomic physics and quantum simulation research.
Rubidium compounds (such as RbTiOPO₄) have nonlinear optical properties and are used for laser frequency conversion.
Rb-82 (half-life 1.27 minutes) is used as a tracer for positron emission tomography (PET) for myocardial perfusion detection.
Safety and toxicity
Rubidium metal's corrosiveness and flammability require strict protection. Experimental operations must be carried out in an inert atmosphere glove box, and waste materials must be slowly passivated with isopropanol or ethanol.
Conclusion
Frequently Asked Questions
Natural rubidium consists of two isotopes: Rb-85, which is stable and has an abundance of 72.17%, and Rb-87, which is radioactive with an abundance of 27.83% and a half-life of 4.88×10¹⁰ years.
The physical basis of rubidium atomic clocks relies on the spin quantum number of Rb-87 (I=3/2) and its specific hyperfine structure transition frequency of 6,834,682,610.904 Hz.
It is prepared via vacuum thermal reduction using rubidium chloride (RbCl) as the raw material and calcium or magnesium as the reducing agent under high temperatures (700–800℃) and low pressure (
To prevent contact with oxygen and water, rubidium must be stored in a dry inert atmosphere, such as argon, or submerged in mineral oil.
As a hazardous chemical (UN No. 1423), experimental operations with rubidium must be performed in an inert atmosphere glove box. Waste materials must be passivated slowly using isopropanol or ethanol.
Rubidium is widely applied in precision timing (GPS and communications), quantum technology (Bose-Einstein condensation), optoelectronic materials (laser frequency conversion), and medical imaging (PET myocardial perfusion detection).