Cesium triiodide
Cesium triiodide (CsI3), CAS 12297-72-2, is a valuable inorganic salt with a molecular weight of 513.62 g/mol. Supplied by Tech Serve Solutions with an assay of ≥99.9%, this compound is primarily utilised in chemical synthesis and as a reagent in various laboratory applications. Its properties make it a key component in specific inorganic salt preparations and a reliable choice for research and development within the chemical industry.

Chemical Synthesis Reagent
Cesium triiodide serves as a reagent in specific synthetic pathways. Its utility in inorganic salt preparation and its distinct chemical properties make it a useful compound for researchers and industrial chemists.
Laboratory Research
This compound finds application in diverse laboratory settings for research and development purposes. Its defined purity allows for consistent and reproducible experimental outcomes in analytical and synthetic chemistry.
Inorganic Salt Preparations
Utilised in the preparation of other inorganic compounds, Cesium triiodide acts as a source of cesium and iodide ions. It is employed in specialised contexts where these specific elements are required.
| Molecular weight | 513.62 |
|---|---|
| Linear formula | CsI3 |
| Assay | ≥99.9% |
| Density | 4.51 g/mL at 25 °C(lit.) |
| Melting point | 207 °C(lit.) |


Hazard statements
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H334May cause allergy or asthma symptoms if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P342
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 36/37/38-42/43 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Cesium triiodide (CsI3) used for?
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Cesium triiodide is primarily used as a reagent in chemical synthesis and in various laboratory research applications, particularly in the preparation of inorganic salts.
What are the CAS number and chemical formula for Cesium triiodide?
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The CAS number for Cesium triiodide is 12297-72-2, and its chemical formula is CsI3.
What grade and purity does Tech Serve Solutions supply for Cesium triiodide?
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Tech Serve Solutions supplies Cesium triiodide with a minimum assay of 99.9%. This product is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should Cesium triiodide be handled safely?
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Cesium triiodide is classified as Danger. It causes skin irritation (H315), may cause an allergic skin reaction (H317), causes serious eye irritation (H319), and may cause allergy or asthma symptoms or breathing difficulties if inhaled (H334), and may cause respiratory irritation (H335). Use a dust mask type N95 (US), wear eyeshields, faceshields, and gloves. Avoid breathing dust. P261, P280, P305 + P351 + P338, P342 + P311.
Can Tech Serve Solutions export Cesium triiodide?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals and laboratory reagents, including Cesium triiodide.
How can I request a quote or sample of Cesium triiodide?
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To request a quote or a sample of Cesium triiodide, please contact our sales team through the website or by phone.
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