Cesium iodide
Cesium iodide (CsI, CAS 7789-17-5) is a white crystalline solid with a molecular weight of 259.81 g/mol. It is soluble in water and alcohol. This high-purity inorganic salt, with an assay of 99.999%, is particularly valued in the fields of scintillation detection and spectroscopy due to its luminescence properties when exposed to ionising radiation. Its applications extend to solid-state physics research and as a component in optical systems.
Scintillation Detectors
Cesium iodide, particularly when doped with thallium (CsI(Tl)), is a widely used scintillator material. It efficiently converts ionising radiation, such as gamma rays and beta particles, into visible light, making it crucial for radiation detection in nuclear physics, medical imaging, and security screening.
Optical Components
Due to its transparency in a broad spectral range, from ultraviolet to infrared, CsI can be utilised in optical applications. It finds use in windows, prisms, and lenses for infrared spectroscopy and other optical instruments where specific transmission properties are required.
Research and Development
As a fundamental inorganic salt, Cesium iodide serves as a reagent and precursor in various research settings. Its well-defined properties make it valuable in solid-state chemistry studies, materials science, and the development of new technologies.
| Molecular weight | 259.81 |
|---|---|
| Empirical formula | CsI |
| Assay | 99.999% trace metals basis |
| Form | powder |
| Density | 4.51 g/mL at 25 °C(lit.) |
| Particle size | −10 mesh |
| Melting point | 626 °C(lit.) |
Hazard statements
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38-43 |
| Safety statements (S) | 22-36/37-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Cesium Iodide (CsI) used for?
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Cesium iodide is primarily used as a scintillator material in radiation detection, in optical components, and as a research chemical in materials science and solid-state physics.
What is the CAS number and formula for Cesium Iodide?
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The CAS number for Cesium iodide is 7789-17-5, and its chemical formula is CsI.
What grade and purity does Tech Serve Solutions supply for Cesium Iodide?
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Tech Serve Solutions supplies Cesium iodide with an assay of 99.999% trace metals basis. This product is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should Cesium Iodide be handled and stored?
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Handle Cesium iodide with appropriate personal protective equipment, including a dust mask type N95, eyeshields, face shields, and gloves. Avoid breathing dust. Ensure adequate ventilation. Store in a tightly closed container in a dry place.
Is Cesium Iodide a controlled substance?
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No, Cesium iodide is not listed as a controlled substance.
How is Cesium Iodide packed and exported by TSS?
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Tech Serve Solutions packs and exports Cesium iodide in appropriate containers suitable for chemical transport, adhering to international shipping regulations for hazardous materials where applicable.
How can I request a quote or sample for Cesium Iodide?
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To request a quote or sample for Cesium iodide, please use the contact form on our website or call our sales department directly.
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