Atomfair Cesium Iodide Powder (CsI), 99.999% Purity
Product Description
Atomfair cesium iodide (CsI) is supplied as a white crystalline solid with 99.999% 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 | 99.999% |
| 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
- 99.999% 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.
The material is slightly hygroscopic and must be stored in a dry environment to prevent moisture absorption. Exposure to ambient humidity can compromise material purity and performance in scintillator applications.
- Moisture Sensitivity: Store the powder in a sealed container under dry conditions to avoid moisture uptake.
How does the 99.999% purity and slightly hygroscopic nature of Atomfair CsI powder affect its suitability for high-resolution scintillator applications?
The 99.999% purity minimizes trace metal impurities that can cause afterglow or quenching, making it ideal for scintillators. However, its slightly hygroscopic nature requires moisture-controlled handling to prevent degradation of optical performance. The refractive index of 1.7873 at 0.59 µm supports efficient light collection in electromagnetic calorimetry.
Can Atomfair CsI powder be directly used for FTIR beam-splitter fabrication, or does it require additional processing?
The powder is intended for research and typically requires further processing such as crystal growth or hot pressing to form optical elements. For FTIR beam-splitters, the material's refractive index (1.7873 at 0.59 µm) and wide transmission range are relevant, but the user must verify compatibility with their specific deposition or crystal growth methods. The product is supplied as a powder for flexibility in R&D.
What storage conditions are recommended to prevent moisture absorption and maintain the 99.999% purity of Atomfair CsI powder?
CsI is slightly hygroscopic, so it should be stored in a dry, inert atmosphere (e.g., desiccator or argon-filled glovebox) at room temperature. The high water solubility (848 g/L at 25°C) means even brief exposure to humid air can degrade purity. It is recommended to open the container only in low-humidity environments and reseal immediately. COA and SDS can be provided for batch-specific handling guidance.
Atomfair CsI powder at 99.999% purity is evaluated for scintillator, detector, and FTIR optics research, offering high refractive index and density but requiring moisture-controlled storage and handling due to slight hygroscopicity and high water solubility.
Positive
- Ultra-high purity (99.999%): Minimizes trace-element interference in scintillator and calorimetry research, enabling reproducible experimental results.
- Broad application versatility: Suitable for scintillator, electromagnetic-calorimetry, FTIR beam-splitter, X-ray detector, and image-intensifier studies, reducing the need for multiple material sources.
Trade-offs
- Slightly hygroscopic: Requires storage in dry, sealed containers and controlled humidity environments to prevent moisture absorption that could alter crystal properties.
- High water solubility: With a solubility of 848 g/L at 25°C, the powder is unsuitable for aqueous systems and demands careful moisture exclusion during handling and processing.
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).
