Cesium
Also known as: Caesium, EINECS 231-155-4, MFCD00134037, UN1407, UNII-1KSV9V4Y4I, cesio
Cesium (CAS 7440-46-2) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula Cs and a molecular weight of 132.90500 g/mol. Key properties include a melting point of 28.5 °C(lit.), a boiling point of 705 °C(lit.) and a density of 1.873 g/mL at 25 °C(lit.). It is classified under GHS with signal word Danger and hazard statements H260 and H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7440-46-2
- Jingsj CID
- J-2995-5
- Molecular Formula
- Cs
- Molecular Weight
- 132.90500 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 28.5 °C(lit.) |
|---|---|
| Boiling Point | 705 °C(lit.) |
| Density | 1.873 g/mL at 25 °C(lit.) |
| Exact Mass | 132.90500 |
| Vapor Pressure | 1 mm Hg ( 279 °C) |
| Additional Property | H2O: soluble |
GHS Safety & Compliance
- H260
- H314 — Causes severe skin burns and eye damage
Frequently Asked Questions
What is the CAS number of Cesium?
The CAS number of Cesium is 7440-46-2.
What are the molecular formula and molecular weight of Cesium?
Cesium has molecular formula Cs and molecular weight 132.90500 g/mol.
Is Cesium hazardous?
Cesium has GHS signal word Danger and hazard statements H260; H314 — Causes severe skin burns and eye damage.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Cesium (CAS 7440-46-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2995-5 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.