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Product Name: Cesium Carbonate
Chemical Formula: Cs2CO3
Synonyms: Carbonic acid, cesium salt; Dicesium carbonate
CAS Number: 534-17-8
Recommended Use: Research, Laboratory reagent, Chemical manufacturing
Supplier: Sigma-Aldrich (or other reputable laboratory supplier)
Emergency Contact: CHEMTREC, +1-800-424-9300
GHS Classification: Eye Irritant (Category 2A), Acute Toxicity Oral (Category 4), Skin Irritant (Category 3)
Label Elements: Exclamation mark symbol, Signal word "Warning"
Hazard Statements: Causes serious eye irritation, Harmful if swallowed, May cause skin irritation
Precautionary Statements: Avoid breathing dust, Wash hands thoroughly after handling, Wear protective gloves, Do not eat, drink or smoke when using this product, IF IN EYES: Rinse cautiously with water for several minutes
Potential Health Effects: Eye irritation, irritation to the digestive tract, skin reddening
Physical Hazards: Not considered flammable or explosive under normal conditions
Environmental Hazards: Not classified as hazardous to the environment but should not enter waterways
Chemical Name: Cesium Carbonate
Concentration: ≥99% by weight
Chemical Formula: Cs2CO3
CAS Number: 534-17-8
Other Ingredients: None at concentrations contributing to hazard classification
Inhalation: Move exposed person to fresh air immediately, loosen tight clothing, seek medical attention if discomfort or symptoms persist
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, remove contact lenses if present and easy to do, seek medical advice if symptoms persist
Skin Contact: Remove contaminated clothing and wash skin with soap and plenty of water, seek medical attention if irritation develops
Ingestion: Rinse mouth with water, do not induce vomiting, seek immediate medical help; never offer anything by mouth if the person is unconscious
Acute Symptoms/Effects: Eye redness, skin irritation, abdominal pain if swallowed
Immediate Medical Attention: Necessary if symptoms are severe or if material is swallowed in significant quantities
Suitable Extinguishing Media: Water spray, dry chemical, foam, carbon dioxide
Protective Equipment: Full protective clothing, self-contained breathing apparatus
Hazardous Combustion Products: Cesium oxides, carbon oxides
Fire and Explosion Hazards: Not flammable; avoid generating dust, and use measures to minimize dust buildup
Special Procedures: Use water spray to cool unopened containers, prevent runoff from entering water supplies
Advice for Firefighters: Stay upwind, use water spray to reduce vapors, evacuate area if large quantities burn
Personal Precautions: Wear protective gloves, safety goggles, lab coat, and dust mask
Environmental Precautions: Prevent material from entering drains, surface water, or soil
Spill Cleanup Methods: Sweep up and place in a suitable container for disposal, avoid generating dust, ventilate area
Decontamination: Wash spill area with water after cleanup, check that all equipment and protective gear are decontaminated
Disposal of Collected Material: Follow applicable regulations for hazardous chemical disposal
Handling: Handle in well-ventilated area with appropriate personal protection, avoid contact with skin and eyes, keep container tightly closed, do not breathe dust
Storage: Store in a cool, dry place, away from incompatible materials such as acids, keep container tightly closed when not in use, store in original packaging or compatible chemically resistant container
Hygiene Practices: Wash hands thoroughly after handling, remove contaminated clothing and wash before reuse
Incompatibilities: Acids, strong oxidizing agents, moisture
Specific Uses: Suitable for laboratory and chemical synthesis applications when handled by trained personnel
Occupational Exposure Limits: No established OSHA or ACGIH limits for cesium carbonate; minimize exposure by engineering controls
Engineering Controls: Use local exhaust ventilation or lab fume hood to control dust levels
Personal Protective Equipment: Safety glasses or chemical splash goggles, nitrile or rubber gloves, lab coat, NIOSH-approved dust respirator when dust levels may be high
Environmental Exposure Controls: Prevent release to the environment, ensure procedures are in place to manage spills and waste
Sanitation Measures: Provide eye wash stations, emergency showers, and wash facilities near work area
Appearance: White crystalline powder
Odor: Odorless
pH (1% Solution): 11.0 – 12.0
Melting Point: 610°C
Boiling Point: Decomposes before boiling
Solubility in Water: 260 g/L at 25°C
Density: 4.072 g/cm³ (20°C)
Vapor Pressure: Not applicable (non-volatile solid)
Flash Point: Not applicable
Partition Coefficient: Not determined
Evaporation Rate: Not volatile
Viscosity: Not applicable
Chemical Stability: Stable under normal storage and handling conditions
Conditions to Avoid: Exposure to moisture, contact with acids
Incompatible Materials: Strong acids, oxidizers, strong reducing agents
Hazardous Decomposition Products: Cesium oxides, carbon dioxide under heat or acid conditions
Hazardous Reactions: Reacts exothermically with acids producing heat and carbon dioxide gas
Acute Toxicity: Data on oral LD50 (rat) >2000 mg/kg, may be harmful if swallowed
Skin Corrosion/Irritation: May cause mild irritation with prolonged or repeated contact
Serious Eye Damage/Irritation: Causes moderate to severe eye irritation
Respiratory Sensitization: Inhalation of dust may cause irritation of the respiratory tract
Chronic Effects: Not classified as a carcinogen, mutagen, or reproductive toxin based on available information
Other Information: No evidence of cumulative toxicity; acute overexposures likely to result in mild to moderate symptoms unless ingested in large amounts
Ecotoxicity: Limited data available; cesium salts may pose low toxicity to aquatic life at environmental concentrations but should not be released into the environment
Persistence and Degradability: Inorganic compound does not degrade under environmental conditions
Bioaccumulative Potential: Does not significantly bioaccumulate in aquatic organisms
Mobility in Soil: High mobility in water-soluble form, likely to move through soil
Other Adverse Effects: Avoid large releases; environmental impact could increase if spilled in significant quantities
Disposal Methods: Dispose of as hazardous chemical waste in accordance with local, state, and federal regulations
Container Disposal: Rinse empty containers with water, triple rinse, and submit for appropriate chemical recycling or disposal
Precautions: Do not dispose of in household garbage or via drains, prevent contamination of soil and groundwater
Suggested Waste Codes: Refer to appropriate regional hazardous waste codes for cesium compounds or inorganic chemical waste
UN Number: Not regulated for ground, air, or sea transport as a hazardous material
Transport Hazard Class: Not classified
Packing Group: Not assigned
Proper Shipping Name: Cesium Carbonate
Labels Required: None
Special Precautions: Keep containers tightly sealed, avoid rough handling, transport in original packaging
TSCA Inventory: Listed
REACH Status: Registered in Europe
SARA 302/304: Not listed as an extremely hazardous substance
SARA 313: Not subject to reporting requirements
State Regulations: Check individual state chemical regulations
WHMIS Classification: D2B – Toxic material causing other toxic effects (Canada)
California Prop 65: Not listed
Other Applicable Regulations: Users should verify compliance with all applicable country, state, or local regulations concerning safe use, handling, and disposal
