Cesium Iodide from TCI, product code C2205, is an inorganic salt made of the alkali metal cesium and the iodide ion. It belongs to the main-group elements family and is widely used in inorganic chemistry, materials science, and applied physics laboratories. In the lab, cesium iodide is a convenient source of cesium and iodide ions for synthesis. It also serves as a starting material for functional materials and as a base material for crystal and optical research. Because it has so many uses, it is a core reagent in the inorganic chemistry collections of research laboratories and universities.
Researchers choose cesium iodide for its distinctive combination of properties. The large, easily polarized cesium ion pairs with the equally large iodide ion to form a crystal lattice that is valuable for solid-state structural studies. The salt generally dissolves well in water, so stock solutions are easy to prepare for many kinds of experiments. Cesium iodide is also known for its transparency across a broad infrared range. When doped with certain elements, it becomes a scintillator material that converts ionizing radiation into visible light. Consistent quality from a recognized manufacturer such as TCI helps make experimental results reliable and reproducible.
In Indonesia, cesium iodide is typically found in university inorganic and physical chemistry laboratories, materials science research groups, and applied physics departments. Lecturers and graduate students use it in synthesis coursework, thesis and dissertation projects, and studies of crystalline and optical materials. Research institutions working on radiation detection, spectroscopy, and functional materials also keep it in their reagent inventories. Its versatility suits Indonesian laboratories that need one dependable inorganic salt for several research directions.
TCI brochures (PDF)
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- Inorganic synthesis: cesium iodide provides a practical, water-soluble source of both cesium and iodide ions, which makes it convenient for preparing other cesium compounds and iodide-containing products.
- Functional materials research: it serves as a starting material for new functional materials, so materials science groups can build cesium- and iodide-based compounds from a well-defined precursor.
- Solid-state and crystal structure studies: the large, polarizable cesium ion paired with the large iodide ion forms a distinctive crystal lattice that is useful for teaching and researching solid-state structure.
- Infrared optics research: cesium iodide is transparent over a wide infrared range, which makes it a relevant base material for optical studies and infrared-related experimental work in physics and chemistry laboratories.
- Scintillator and radiation detection studies: when doped with suitable elements, cesium iodide becomes a scintillator that converts ionizing radiation into visible light, supporting research on radiation detection materials.
| Brand | TCI (product code C2205) |
|---|---|
| CAS number | 7789-17-5 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Catalysis and Inorganic Chemistry > Main-group Elements |
| Pack sizes | please refer to the product listing for the currently available options |
| Physical form | solid inorganic salt (crystalline) |
| Storage | keep tightly closed in a cool, dry place, protected from moisture and light |
Store cesium iodide in its original, tightly sealed container in a cool, dry, well-ventilated area, away from moisture and direct light. If you transfer the material, use clean, dry, chemically compatible containers such as glass or suitable plastic, and label them clearly with the product name and CAS number. Close the container promptly after each use so the salt does not absorb moisture from the air. Follow general laboratory practice when handling it: wear safety glasses, gloves, and a lab coat, avoid creating or inhaling dust, and work in a well-ventilated area or fume hood. Wash your hands after handling. Read the Safety Data Sheet supplied with the product for specific hazard information, first-aid measures, and disposal instructions that follow local regulations.
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Product Categories
- Electronic MaterialsColloidal Quantum Dot (QD) Research ReagentsSynthetic Reagents [Colloidal Quantum Dot (QD) Research Reagents]
- Electronic MaterialsPerovskite Solar Cell (PSC) MaterialsCesium Halides [Organic-Inorganic Perovskite Precursors]
- Organic-Inorganic Hybrid MaterialsOrganic-Inorganic Perovskite PrecursorsCesium Halides [Organic-Inorganic Perovskite Precursors]


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