| [Fire Fighting] Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use dry chemical, dry sand, or carbon dioxide. Do not use water on material itself. If large quantities of combustibles are involved, use water in flooding quantities as spray and fog. | |
| [Fire Potential] Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. | |
| [Ingestion] Do NOT induce vomiting. Allow the victim to rinse his mouth and then to drink 2-4 cupfuls of water, and seek medical advice. | |
| [Inhalation] Remove from exposure to fresh air immediately. | |
| [Skin] Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. | |
| [Eyes] Immediately flush with running water for at least 20 minutes. | |
| [Storage] Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage. | |
| [Handling] All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood. | |
| [Ingestion] Not available. | |
| [Inhalation] May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Causes chemical burns to the respiratory tract. | |
| [Skin] May cause severe irritation and possible burns. | |
| [Eyes] Contact with eyes may cause severe irritation, and possible eye burns. | |
| [Hazards] Vapors may accumulate in confined areas (basement, tanks, hopper/tank cars, etc.). Substance will react with water (some violently), releasing corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water. | |
| [EC Risk Phrase] R 22 35 | |
| [EC Safety Phrase] S 26 36/37/39 45 | |
| [UN (DOT)] 2681 | |
| [Personal Protection] Wear appropriate protective gloves, clothing and goggles. | |
| [Respirators] Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions. | |
| [Exposure limit(s)] NIOSH REL: TWA 2 mg/m3 | |
| [Poison Class] 3 | |
| [Appearance] Colorless to yellow crystalline solid. | |
| [Solubility in water] 3950 g/L | |
| [Melting Point] 338.85 | |
| [Vapor Pressure] 934.35 (546.3 C) | |
| [Density] 3.675 g/cm3 (11 C) | |
| [pKa/pKb] Strong base | |
| [Heat Of Vaporization] | |
| [Usage] Substance is used in storage-battery electrolytes. | |
| [Product Name] Cesium hydroxide | |
| [Synonyms] Cesium hydrate | |
| [CAS] "CASEN_21351-79-1.htm">21351-79-1 | |
| [Formula] CsHO | |
| [Molecular Weight] 149.91 | |
| [EINECS] 244-344-1 | |
| [RTECS] FK9800000 | |
| [RTECS Class] Primary Irritant | |
| [Merck] 13,2022 | |
| [Beilstein/Gmelin] 42908 (G) | |
| [Small spills/leaks] Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. | |
| [Stability] Stable under normal temperatures and pressures. | |
| [Incompatibilities] Strong acids. | |
| [Combustion Products] Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. | |
| [UN Number] 2681 | |
| [Hazard Class] 8 | |
| [Packing Group] II |
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