High-Quality Cesium Chloride (CsCl) from China Suppliers and Factory - Purity and Competitive Pricing
Preparation method
Industrial preparation is mainly through the following ways:
1. Hydrochloric Acid Reaction
Reaction of metallic cesium with hydrochloric acid.
2. Neutralization Method
Neutralization method with cesium carbonate or cesium hydroxide.
3. 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, which is 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
Q:
How is Cesium Chloride (CsCl) prepared industrially?
Industrial preparation is primarily achieved through three methods: the reaction of metallic cesium with hydrochloric acid, neutralization using cesium carbonate or cesium hydroxide, or mineral extraction to obtain high-purity CsCl from pollucite via acid leaching and ion exchange.
Q:
Why is Cesium Chloride used for biological sample separation?
Saturated CsCl solutions can reach a high density of 1.9 g/cm³. This high-density property makes it ideal for density gradient centrifugation separation of biological samples, such as DNA purification.
Q:
What role does CsCl play in medical applications?
In nuclear medicine, the isotope Cs-131 (which has a half-life of 9.7 days) is utilized specifically for the brachytherapy of prostate cancer.
Q:
Is Cesium Chloride toxic, and how should it be stored?
CsCl is moderately toxic, with an LD₅₀ (rat oral) of approximately 2300 mg/kg. It must be stored in a moisture-proof, sealed environment to prevent contact with strong oxidants. Radioactive isotopes like Cs-137 require strict management under nuclear safety regulations.
Q:
What are the key optical properties of Cesium Chloride crystals?
CsCl crystals feature a wide light transmission range spanning 0.2 to 55 μm, which allows them to be effectively used for infrared spectrometer prisms.
Q:
How is CsCl utilized in materials science?
It is used to prepare cesium vapor for photoelectric tubes and ion thrusters, and it serves as a precursor for synthesizing functional materials with CsCl-type structures, such as perovskite solar cells.