| Name | caesium hydroxide |
| Synonyms | Caesium hydrate |
| CAS | 1308-47-0 21351-79-1 |
| EINECS | 244-344-1 |
| Molecular Formula | CsHO |
| Molar Mass | 149.91279 |
| Density | 3.675 |
| Melting Point | 272℃ |
| Water Solubility | soluble |
| Physical and Chemical Properties |
Colourless or yellowish, fused, crystalline, hygroscopic mass. Extremely soluble in water and the strongest base known. |
| Hazard Symbols | C - Corrosive![]() |
| Risk Codes | R22 - Harmful if swallowed R35 - Causes severe burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 - Take off immediately all contaminated clothing. S37/39 - Wear suitable gloves and eye/face protection |