CsI
259.8099 g/mol
Electronic ChemicalWarning
CESIUM IODIDE
CAS7789-17-5EC232-145-2
Category
Electronic Chemical
Compound Class
Inorganic Salt
Primary Use
X-ray image intensifier phosphor
Cesium iodide is an ionic compound of cesium and iodine, commonly used as the input phosphor in X-ray image intensifier tubes for fluoroscopy equipment. It is also noted for its high efficiency as a photocathode material at extreme ultraviolet wavelengths.
X-ray image intensifier phosphorPhotocathode material for extreme ultraviolet detection
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongSame Parent
Cesium fluoride
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Vacuum tube manufacturing
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Cesium chloride
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X-ray screens and radiographic contrast medium
ReferenceSame Category
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Optical systems and X-ray spectroscopy
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Silicon source for semiconductor deposition
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Coating for wafer bonding
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OLED phosphorescent dopant material
Related Reading
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Read moreSafety Reference
Warning
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H400Very toxic to aquatic life
Customs Tariff Classification
The international HS code for CESIUM IODIDE (CAS 7789-17-5) is 2827.60.
HS code (international, 6-digit)
2827.60
EU CN code (8-digit)
2827 60 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
cesium iodide
InChIKey
XQPRBTXUXXVTKB-UHFFFAOYSA-M
SMILES
[I-].[Cs+]
Synonyms (11)
- CESIUM IODIDE
- Caesium iodide
- Cesium iodide (Cs2I2)
- Cesium iodide (Cs3I3)
- Cesium iodide (CsI)
- Cesium iodide, ultra dry
- Cesium monoiodide
- Dicesium diiodide
- Tricesium triiodide
- cesium(I) iodide
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