Description

Cesium Iodide is a high-purity inorganic salt with the chemical formula CsI. This compound is valued for its excellent optical and scintillation properties, making it a critical material in advanced technological applications. It is primarily sought by manufacturers and research institutions in the optics, radiation detection, and electronics sectors for its reliability and performance consistency.

Application

• Scintillation Crystals: Used in the manufacture of single crystals for γ-ray and X-ray detectors in medical imaging (CT/PET scanners), nuclear physics research, and security screening equipment.
• Optical Components: Serves as a raw material for producing infrared (IR) optical lenses, windows, and prisms due to its broad transmission range.
• Thin-Film Deposition: Employed as a source material in physical vapor deposition (PVD) processes to create coatings for specialized optics and electronic devices.
• Research & Development: Utilized in academic and industrial laboratories for photonic research, spectroscopy, and the development of new radiation-sensitive materials.
• Additive in Special Glasses: Acts as a component in the formulation of high-refractive-index and radiation-shielding glasses.

Basic Information

Product Name	Cesium Iodide
CAS No.	7789-17-5
Molecular Formula	CsI
Molecular Weight	259.81 g/mol
Synonyms	Cesium(I) iodide; Caesium iodide; Cesium monoiodide; Cesium iodide (CsI); UNII-1KZ818A45H; Cesium iodide, ultra dry; Cesium iodide, anhydrous
EINECS	232-145-2

Quality Control

Our Cesium Iodide is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical data, including trace metal analysis and crystal quality assessments for optical-grade material. Certificates of Analysis (COA) are available for every shipment to verify compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept sealed to prevent moisture absorption, which can affect optical clarity and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or lumps
Identification (IR)	Conforms
Assay (CsI)	≥ 99.9%
Purity (Optical Grade)	≥ 99.99%
Loss on Drying	≤ 0.5%
Chloride (Cl)	≤ 50 ppm
Sulfate (SO₄)	≤ 30 ppm
Heavy Metals (as Pb)	≤ 10 ppm
Iron (Fe)	≤ 5 ppm
Potassium (K)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.