Product Description
Cesium iodide is a soft material with extremely strong hygroscopic properties. Its scintillation crystals are widely used in indirect X-ray imaging detectors, such as those employed in CT scanning systems. It is also utilized in the construction of electromagnetic shower detectors for the CLEO II experiment, which studies electron–positron annihilation at center-of-mass energies around 10 GeV. In addition, cesium iodide is used in beam splitters for far-infrared spectrophotometers and as transmission windows for IR applications.
Properties
| Melting point | 626 °C (lit.) |
| Boiling point | 1280 °C |
| density | 4.51 g/mL at 25 °C (lit.) |
| refractive index | 1.7876 |
| Fp | 1280°C |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | soluble in ethanol, methanol, acetone |
| form | beads |
| Specific Gravity | 4.51 |
| color | White |
| PH | pH(50g/l, 25℃) : 5.0～9.0 |
| Water Solubility | 74 g/100 mL (20 ºC) |
| Sensitive | Hygroscopic |
| Merck | 142014 |
| Exposure limits | ACGIH: TWA 0.01 ppm |
| Dielectric constant | 5.6（Ambient） |
| Stability: | Stable. Deliquescent. |
| Major Application | cleaning products |
| cosmetics | |
| flavors and fragrances | |
| food and beverages | |
| personal care | |
| InChI | 1S/Cs.HI/h;1H/q+1;/p-1 |
| InChIKey | XQPRBTXUXXVTKB-UHFFFAOYSA-M |
| SMILES | [I-].[Cs+] |
| CAS DataBase Reference | 7789-17-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Cesium iodide(7789-17-5) |
| EPA Substance Registry System | Cesium iodide (CsI) (7789-17-5) |
Safety Information
| Hazard Codes | Xn,Xi |
| Risk Statements | 36/37/38-42/43-43 |
| Safety Statements | 22-36/37-45 |
| RIDADR | UN 3077 9 / PGIII |
| WGK Germany | 2 |
| RTECS | FL0350000 |
| F | 8 |
| TSCA | TSCA listed |
| HazardClass | 9 |
| HS Code | 28276000 |
| Storage Class | 13 - Non Combustible Solids |
| Hazard Classifications | Aquatic Acute 1 |
| Repr. 2 | |
| Toxicity | LD50 i.p. in rats: 1.4 g/kg (Cochran) |
Product Application
Cesium iodide (CsI) is an ionic compound widely used as a scintillator material in applications such as X-ray image intensifier tubes, photocathodes, and display devices. It is also employed in scintillation (Geiger) counters for measuring external radiation levels, and serves as a “getter” to remove residual air molecules in vacuum tubes.
Due to its relatively high density and atomic number, CsI provides strong γ-ray stopping power. For scintillation counting, it can be used in its pure form or doped with sodium or thallium.
In addition, CsI exhibits good resistance to thermal and mechanical shock, and its physical properties remain stable regardless of the activator used. Compared with NaI(Tl), it is softer, more plastic, and does not cleave, giving it excellent durability. These characteristics make it particularly suitable for well logging, space research, and other demanding environments involving severe shock conditions.
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Company Profile
Based in the central industrial gathering area of Shandong’s chemical industry, Shandong Rongsheng Chemical Co., Ltd. is a modern integrated enterprise engaged in chemical production, technical research and development, product distribution and international trade services. The company specializes in the supply of fundamental chemical raw materials and high-performance fine chemical additives, which are widely adopted in rubber and plastic processing, paint and ink manufacturing, water treatment projects and various industrial production fields.
We operate standardized independent production facilities and implement strict whole-process quality management to ensure stable product quality. Adopting a direct factory supply model, we eliminate intermediate links to offer cost-effective products for global customers. We support diversified customized services, including large-scale bulk procurement, exclusive formula development, personalized packaging processing and small-batch sample customization. Flexible production arrangements allow us to adjust production plans dynamically to meet different customer needs and achieve stable delivery.
Our professional international trade team has long been engaged in global chemical business and possesses profound market experience. Familiar with the import policies, compliance standards and cross-border logistics rules of various countries, we provide overseas customers with full-process one-stop export services. Our business covers customer consultation response, sample delivery, personalized solution design, customs clearance operation, cargo transportation and complete after-sales service tracking.
Always adhering to the development principle of quality assurance and integrity cooperation, our company relies on stable product performance, flexible service systems and standardized and efficient delivery capabilities. We are committed to providing global customers with high-cost-performance, stable and comprehensive chemical supply chain solutions. We aim to establish long-term stable and sincere cooperative relations with global clients and become a reliable partner in the fine chemical foreign trade industry.
