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Material Safety Data Sheet for Cesium Nitrate

Identification

Product Name: Cesium Nitrate
Chemical Formula: CsNO3
Synonyms: Caesium Nitrate, Caesium Salt of Nitric Acid
CAS Number: 7789-18-6
Recommended Use: Laboratory research, specialty glass, pyrotechnic manufacturing, analytical chemistry
Supplier Name: Sourcing company details from supplier invoice or product label
Emergency Contact Number: Provided on supplied packaging or supplier documentation

Hazard Identification

GHS Classification: Oxidizing solid (Category 2), Acute toxicity (Category 4, oral), Eye irritation (Category 2A)
Label Elements: Signal Word: Warning, Hazard pictograms: Flame over circle, Exclamation mark
Hazard Statements: May intensify fire; oxidizer. Harmful if swallowed. Causes serious eye irritation.
Precautionary Statements: Keep away from heat, hot surfaces, sparks, open flames, and combustible materials. Wash hands thoroughly after handling. Wear eye protection. Do not eat, drink, or smoke when using this product.
Other Hazards: May react vigorously with reducing agents or organic materials.

Composition / Information on Ingredients

Chemical Name: Cesium Nitrate
Common Name: Cesium Nitrate
Concentration: >99% by weight
CAS Number: 7789-18-6
Impurities: May contain trace alkali earth metals under 0.1% depending on source
Molecular Weight: 194.91 g/mol

First Aid Measures

General Guidance: Move person to fresh air immediately and consult a medical professional if inhalation, ingestion, or skin/eye contact occurs.
Inhalation: Remove to fresh air. Seek medical attention for symptoms such as headache, dizziness, or difficulty breathing.
Skin Contact: Remove contaminated clothing, rinse skin with plenty of water for 15 minutes. Seek medical attention for persistent irritation.
Eye Contact: Flush eyes gently with water for at least 15 minutes, lifting eyelids occasionally. Get prompt medical attention.
Ingestion: Rinse mouth with water, do not induce vomiting, and contact poison control or a physician soon.

Fire-Fighting Measures

Suitable Extinguishing Media: Use water in large amounts. Avoid dry chemicals, carbon dioxide, or foam on burning material as it may react or worsen fire.
Hazards from Combustion: May emit toxic fumes including nitrogen oxides and cesium oxides.
Protective Equipment: Full protective clothing and self-contained breathing apparatus required for fire-fighting personnel.
Specific Hazards: Intensifies fire; oxidizer. Material supports combustion even without air. Beware of re-ignition after extinguishing.

Accidental Release Measures

Personal Precautions: Use proper personal protective equipment including gloves, goggles, and protective clothing. Ensure adequate ventilation.
Containment: Avoid contact with incompatible substances (including combustibles). Prevent spillage from entering waterways.
Clean-Up Method: Sweep up carefully, do not create dust, and transfer to a suitable container for disposal.
Environmental Precautions: Prevent runoff into soil and drains. Alert appropriate authorities if environmental contamination occurs.
Decontamination: Rinse area with water after clean-up. Dispose of wash water in accordance with local regulations.

Handling and Storage

Safe Handling: Minimize dust generation. Use only in well-ventilated areas. Avoid contact with skin, eyes, or clothing. Separate from acids, reducing agents, and combustibles.
Personal Hygiene: Remove contaminated clothing and wash thoroughly after handling.
Storage Conditions: Store in a tightly closed, corrosion-resistant container, in a cool, dry, and well-ventilated area. Keep away from any sources of ignition or flammable substances.
Incompatible Materials: Prevent contact with organic materials, strong acids, strong reducing agents, and metals like powdered aluminum.

Exposure Controls and Personal Protection

Exposure Limits: No specific OSHA or ACGIH exposure limits. Handle with standard care appropriate to chemical oxidizers.
Engineering Controls: Use chemical fume hood or local exhaust ventilation.
Personal Protective Equipment: Wear chemical-resistant gloves (e.g., nitrile), goggles or safety glasses, lab coat or coveralls, and a dust respirator if risk of airborne material exists.
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling. Do not eat, drink, or smoke in the laboratory area.

Physical and Chemical Properties

Appearance: Colorless to white crystalline solid
Odor: Odorless
pH: Neutral to slightly acidic in water
Melting Point: 414 °C (777 °F)
Boiling Point: Decomposes before boiling
Solubility: Freely soluble in water (187 g/L at 20°C), slightly soluble in alcohol
Density: 3.68 g/cm3 at 20°C
Vapor Pressure: Not applicable (solid at room temperature)
Other Properties: Oxidizing, not combustible itself but accelerates burning of other materials

Stability and Reactivity

Chemical Stability: Stable under recommended storage conditions
Conditions to Avoid: High temperatures, shock, friction, and contamination by incompatible materials
Reactive With: Organic materials, powdered metals, strong acids, strong reducing agents, and sulfides
Decomposition Products: Nitrogen oxides, cesium oxide on strong heating or decomposition
Polymerization: Does not occur

Toxicological Information

Acute Toxicity: Harmful if swallowed (LD50 (rat, oral) ~250 mg/kg)
Skin/Eye Irritation: Causes severe irritation and possible burns to skin and eyes
Chronic Effects: Prolonged or repeated exposure may impact the central nervous system and kidneys by cesium accumulation
Symptoms of Exposure: Nausea, vomiting, abdominal pain, eye redness, and burning sensation
Carcinogenicity: No data available; not listed as a carcinogen by IARC, NTP, or OSHA
Other Information: Inhalation may cause respiratory tract irritation or aggravate existing conditions

Ecological Information

Ecotoxicity: High toxicity to aquatic life due to nitrate ions contributing to eutrophication
Persistence and Degradability: Inorganic compound, not expected to degrade biologically
Bioaccumulative Potential: Cesium can accumulate in plants and aquatic organisms, increasing ecological risk over time
Mobility in Soil: Highly soluble in water, may leach rapidly through soil into groundwater
Other Hazards: Releases nitrate into water systems can disrupt aquatic ecosystems and drinking water quality

Disposal Considerations

Waste Disposal Method: Treat as hazardous waste. Collect and transfer to a licensed chemical disposal company.
Contaminated Packaging: Dispose of in accordance with local or national regulations.
Precautions: Do not discharge to sewers, water courses, or onto the ground. Dispose of in clearly labeled containers.
Regulations: Comply with all relevant federal, state, and local environmental regulations.

Transport Information

UN Number: UN 1451
Shipping Name: Cesium Nitrate
Hazard Class: 5.1 (Oxidizer)
Packing Group: II
Label Requirement: Oxidizer label required
Marine Pollutant: Not classified as a marine pollutant
Additional Transport Precautions: Keep containers upright and secure. Avoid transport with flammable or reducing substances.

Regulatory Information

TSCA Status: Listed on the Toxic Substances Control Act inventory
REACH Status: Registered in the European Union
SARA Title III: Cesium nitrate is subject to reporting requirements as an oxidizer and hazardous substance under Section 313
Other Regulations: Subject to workplace safety standards such as OSHA Hazard Communication Standard in the United States, GHS laws globally
Labeling: Requires clear labeling as an oxidizer and hazardous chemical according to local legislation