Atomfair Cesium Iodide Powder (CsI), 99.9% Purity
Product Description
Atomfair cesium iodide (CsI) is supplied as a white crystalline solid with 99.9% purity. It is intended for research on scintillator and electromagnetic-calorimetry.
Technical Specifications
| PARAMETER DETAILS | |
|---|---|
| Product | Cesium Iodide Powder (CsI) |
| Material | Cesium Iodide |
| Chemical Formula | CsI |
| CAS Number | 7789-17-5 |
| Purity | 99.9% |
| Physical State | Powder |
| Appearance | White crystalline solid |
| EC / EINECS Number | 232-145-2 |
| Molar Mass | 259.809 g/mol |
| Density | 4.51 g/cm³ |
| Melting Point | 632 °C |
| Boiling Point | 1280 °C |
| Water Solubility | 848 g/L at 25 °C |
| Crystal Structure | CsCl-type, cP2 |
| Refractive Index | 1.7873 at 0.59 µm |
| Moisture Sensitivity | Slightly hygroscopic |
Key Features and Advantages
- 99.9% purity.
- White crystalline solid.
APPLICATION SCOPE: scintillator and electromagnetic-calorimetry, FTIR beam-splitter, X-ray detector, and image-intensifier research
DOCUMENTATION: COA and SDS can be provided upon request for batch-specific confirmation.
TAILORED SOLUTIONS FOR RESEARCH
For product specifications and quotation support, contact the Atomfair team.
This powder is slightly hygroscopic and requires storage in a dry, inert atmosphere to prevent moisture uptake. Avoid exposure to ambient humidity during handling and use to maintain material integrity.
- Moisture Sensitivity Handling: Store in a sealed container under dry nitrogen or in a desiccator to preserve purity and prevent degradation.
What is the significance of the 99.9% purity level for CsI in scintillator and electromagnetic calorimetry applications?
The 99.9% purity ensures minimal impurities that could cause afterglow or reduced light yield in scintillation detection. Atomfair CsI is a white crystalline solid with a density of 4.51 g/cm³ and a refractive index of 1.7873 at 0.59 µm, making it suitable for high-energy physics and X-ray detection research.
Can Atomfair CsI powder be used directly in FTIR beam-splitter and X-ray detector research?
Yes, the product is specifically intended for research on scintillator, electromagnetic calorimetry, FTIR beam-splitters, X-ray detectors, and image intensifiers. However, its slightly hygroscopic nature requires careful handling to prevent moisture absorption that could affect optical clarity. Technical documentation including COA and SDS is available upon request.
What storage and handling precautions are required for slightly hygroscopic CsI powder?
Due to its slight hygroscopicity, the powder should be stored in a dry, sealed container away from moisture. The product has a melting point of 632 °C and water solubility of 848 g/L at 25 °C, so exposure to humidity or liquid water will cause dissolution or degradation. Use in a low-humidity environment or glovebox for best results.
Atomfair CsI powder (99.9% purity) is assessed for use in scintillator, X-ray detector, and FTIR beam-splitter research. Its slightly hygroscopic nature requires humidity-controlled storage to maintain performance.
Positive
- High purity for research: 99.9% purity ensures minimal impurity interference in scintillator and electromagnetic-calorimetry experiments.
- Broad application scope: Suitable for multiple detection technologies including scintillators, FTIR beam-splitters, X-ray detectors, and image intensifiers.
Trade-offs
- Slightly hygroscopic powder: The material is slightly hygroscopic, requiring storage in a dry environment to prevent moisture absorption and maintain crystal integrity.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD excl. heavy equipment). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).






