China CsCl Suppliers and Factory - High Purity Cesium Chloride with Excellent Solubility and Crystal Quality
Preparation Method
Industrial preparation is mainly through the following ways:
- Reaction of metallic cesium with hydrochloric acid
- Neutralization method with cesium carbonate or cesium hydroxide
- Mineral extraction: High-purity CsCl is obtained from pollucite by acid leaching, ion exchange and other steps.
Chemical and Physical Properties
High-density solution
The density of saturated CsCl solution can reach 1.9 g/cm³, often used for density gradient centrifugation separation of biological samples (such as DNA purification).
Ionic conductivity
Molten CsCl is an excellent ion conductor and is used for high-temperature electrolyte research.
Optical properties
CsCl crystals have a wide light transmission range (0.2~55 μm) and can be used for infrared spectrometer prisms.
Radioactive applications
Gamma-ray sources of Cs-137 (half-life 30.17 years) are widely used in medical and industrial irradiation.
Main Applications
1. Molecular biology:
- Density gradient centrifugation is used to separate nucleic acids and virus particles.
- As a buffer component for PCR reactions.
2. Nuclear medicine:
- Cs-131 (half-life 9.7 days) is used for brachytherapy of prostate cancer.
3. Materials science:
- Preparation of cesium vapor for photoelectric tubes and ion thrusters.
- Synthesis of functional materials with CsCl-type structures (such as perovskite solar cell precursors).
Basic Research
- Used to prepare optical lattices in ultracold atom experiments.
- Study the phase transition behavior of ionic crystals (transformed to NaCl-type structure at high temperature).
Safety and Storage
CsCl is moderately toxic (LD₅₀ rat oral administration is about 2300 mg/kg), but radioactive isotopes need to be strictly protected. Storage needs to be moisture-proof and sealed to avoid contact with strong oxidants. Radioactive materials such as Cs-137 need to be managed in accordance with nuclear safety regulations.
Conclusion
Due to its unique crystal structure, excellent solubility and diverse isotopic characteristics, cesium chloride occupies an important position in the fields of life sciences, nuclear technology and functional materials. Its applications extend from basic research to high-tech, reflecting the multifunctional value of alkali metal halides.
Frequently Asked Questions
What is the primary industrial use of Cesium Chloride?
Cesium Chloride is primarily used in molecular biology for density gradient centrifugation to separate DNA, RNA, and proteins, as well as in materials science for creating photoelectric tubes.
Is Cesium Chloride hazardous to health?
Standard Cesium Chloride is moderately toxic if ingested. However, radioactive isotopes like Cs-137 are highly dangerous and require strict regulatory handling and shielding.
How should Cesium Chloride be stored?
It should be kept in a cool, dry, and well-ventilated place. The containers must be tightly sealed because the compound is hygroscopic (absorbs moisture from the air).
Why is CsCl used in centrifugation?
Because it forms a very high-density solution (up to 1.9 g/cm³), it allows for the separation of particles based on their buoyant density, which is essential for purifying viral particles and nucleic acids.
Can Cesium Chloride be used in solar energy research?
Yes, it is used as a precursor in the synthesis of functional materials with CsCl-type structures, specifically in the development of perovskite solar cells.