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Description
Cesium Iodide is an inorganic salt of cesium and iodide that is widely recognised both as a scintillator material and as an inorganic chemical reagent. In single-crystal form, particularly after doping with an activator, this compound emits flashes of light when it absorbs ionising radiation, which makes it the backbone of many X-ray and gamma-ray detectors. On the reagent side, the salt serves as a source of both cesium ions and iodide ions in the laboratory, and it acts as an important precursor in the rapidly growing field of halide perovskite materials research.
The properties that make cesium iodide sought after are its high density and its large effective atomic number, which give it a far better ability to stop radiation than lighter materials offer. Its crystals also transmit light across the visible and infrared ranges, supporting its use in optical components. As a salt, cesium iodide dissolves in water and in certain polar solvents, which makes it straightforward to prepare precursor solutions for crystal growth or for thin-film coating. The iodide ion is nucleophilic and can act as an additive that accelerates certain substitution reactions, while the cesium ion contributes its own large, weakly coordinating character to the system.
In Indonesian laboratories, this grade from TCI is typically ordered by university research groups, materials science laboratories, and radiation detection facilities that need a reliable inorganic salt for scintillator and perovskite work. It is commonly used in solution-based preparation routes, in crystal growth experiments, and as a general inorganic reagent on the bench. AMI Scientific supplies it as part of the main-group element range within its catalysis and inorganic chemistry portfolio.
Laboratory Applications
- Scintillation detector fabrication — the high density and large effective atomic number allow the crystal to stop incoming X-ray and gamma radiation efficiently and convert it into detectable light flashes.
- Halide perovskite precursor chemistry — the salt supplies the cesium ion required in mixed-cation perovskite formulations and dissolves readily to give the precursor solutions those preparations depend on.
- Single-crystal growth studies — its solubility in water and selected polar solvents makes it convenient to prepare saturated solutions for controlled crystallisation and doping experiments with activators.
- Thin-film deposition work — solution-processable behaviour lets researchers coat uniform films for optoelectronic and detector layers without needing specialised high-temperature salt handling equipment.
- Inorganic reagent and nucleophilic additive use — the iodide ion can accelerate certain substitution reactions, while the compound also serves simply as a defined source of cesium or iodide ions.
Specifications
- Brand: TCI
- CAS number: 7789-17-5
- Product code: C2205
- Category: Chemistry > Catalysis and Inorganic Chemistry > Main-group Elements
- Physical form: crystalline inorganic salt
- Pack sizes: available in the standard TCI catalogue pack sizes; please confirm the size required when ordering
- Storage: keep in a closed container in a cool, dry place
Handling and Storage
Store cesium iodide in a tightly closed original container in a cool, dry, well-ventilated area, away from moisture and from direct sunlight, since the salt is water-soluble and can pick up humidity from the surrounding air. Use clean, dry glass or chemically compatible plastic containers for any transferred portions, and label them clearly. Handle the material in a fume hood or a well-ventilated bench area while wearing a laboratory coat, safety goggles, and suitable gloves. Avoid generating dust, avoid contact with skin and eyes, and wash hands after handling. Keep the container closed when not in use, and follow the manufacturer's safety data sheet along with your institution's chemical waste procedures for disposal.
