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Product Name: Ammonium Cerium(IV) Nitrate
Synonyms: Ceric Ammonium Nitrate, CAN
Chemical Formula: (NH4)2Ce(NO3)6
CAS Number: 16774-21-3
Recommended Use: Laboratory reagent, oxidizing agent
Manufacturer or Supplier: Industrial chemical and laboratory supply companies contact details should be found on the received packaging
GHS Classification: Oxidizing solid (Category 2), Acute toxicity - oral (Category 4), Skin irritation (Category 2), Eye irritation (Category 2A)
Signal Word: Danger
Hazard Statements: May intensify fire; oxidizer. Harmful if swallowed. Causes skin irritation. Causes serious eye irritation.
Pictograms: Flame over circle, Exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gloves and eye protection. Wash hands thoroughly after handling. If on skin, wash immediately with soap and plenty of water. If in eyes, rinse cautiously with water for several minutes.
Chemical Name: Ammonium Cerium(IV) Nitrate
Concentration: Greater than 98%
CAS Number: 16774-21-3
Other Ingredients: No significant impurities expected at relevant concentrations
Inhalation: Move person to fresh air. Seek medical attention if symptoms appear such as difficulty breathing, throat irritation, or coughing.
Skin Contact: Remove contaminated clothing. Wash affected area with large amounts of water and soap. Get medical advice if irritation develops or persists.
Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Get immediate medical attention for persistent irritation.
Ingestion: Never give anything by mouth to an unconscious person. Rinse mouth with water. Do not induce vomiting. Seek medical help right away.
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide. Focus on extinguishing surrounding fire rather than the chemical itself.
Hazards from Combustion: May form irritating, toxic fumes of nitrogen oxides and cerium oxides. Can contribute oxygen to a fire, intensifying flames.
Protective Equipment: Firefighters should wear self-contained breathing apparatus (SCBA) and full protective clothing. Avoid breathing in fumes, gases, or vapors generated.
Special Precautions: Cool containers with water spray from a safe distance, avoid extinguishing with dry combustibles, and move containers from fire area if it can be done safely.
Personal Precautions: Evacuate unprotected personnel. Avoid inhaling dust. Ventilate area. Put on appropriate personal protective equipment.
Spill Cleanup Methods: Sweep up carefully without generating dust. Place in suitable closed container for disposal. Wash spill site after cleanup.
Environmental Precautions: Prevent spilled material from entering drains or natural water sources. Notify authorities if large quantities contaminate water systems.
Disposal: Refer to local regulations for chemical disposal methods, use licensed waste disposal handlers.
Handling: Use with adequate ventilation. Avoid direct contact with skin, eyes, and clothing. Do not eat, drink, or smoke in working area. Wash hands before breaks and after work.
Storage: Keep container tightly closed in a cool, dry, well-ventilated location. Store away from combustible materials, reducing agents, and sources of ignition. Protect from light and moisture. Maintain in original packaging.
Engineering Controls: Use local exhaust or general laboratory ventilation to keep airborne levels below established exposure limits.
Personal Protective Equipment: Wear chemical resistant gloves, safety goggles, protective lab coat. Use appropriate respiratory protection for dusts if engineering controls are insufficient.
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling this compound. Remove contaminated clothing and wash before reuse.
Exposure Limits: Occupational exposure limits not specifically established for this compound. Control exposure to the lowest levels reasonably achievable.
Appearance: Orange-red crystalline solid
Odor: Odorless
Melting Point: Decomposes above 150°C (302°F)
Boiling Point: Not applicable
Solubility: Soluble in water
Relative Density: Approximately 2.5 g/cm³
pH: 2–4 solution in water
Vapor Pressure: Not relevant for solid
Other Data: Strong oxidizer, reacts violently with reducing agents and some organic substances.
Chemical Stability: Stable under recommended storage conditions, away from light and moisture.
Reactivity: Strong oxidizer, can react vigorously with combustibles, reducing agents, and organic materials.
Conditions to Avoid: Exposure to heat, flame, or incompatible materials.
Hazardous Decomposition Products: Nitrogen oxides, ammonia, and cerium oxides may form under fire conditions.
Incompatibilities: Strong acids, alkalis, organic solvents, and various reducing agents.
Acute Toxicity: Oral LD50 estimated between 300–2000 mg/kg (rat, reference literature). Can cause nausea, vomiting, abdominal pain.
Skin Irritation: Irritant to skin with repeated or prolonged contact.
Eye Damage: Highly irritating, risk of corneal injury.
Inhalation: Dust inhalation can cause irritation of nose and respiratory tract.
Chronic Effects: No long-term clinical studies, but repeated exposure could aggravate existing conditions.
Carcinogenicity: Not listed by IARC, NTP, or OSHA.
Ecotoxicity: Harmful to aquatic life with long lasting effects. Strong oxidizing action can disrupt local ecosystems.
Persistence and Degradability: Not quickly biodegradable.
Bioaccumulative Potential: Low based on chemical structure and solubility data.
Mobility in Soil: Highly soluble in water, may migrate through soil to groundwater.
Other Adverse Effects: Cerium compounds may accumulate in aquatic organisms.
Waste Disposal Methods: Treat as hazardous waste according to local, regional, and national regulations. Make sure to work with approved waste disposal contractors.
Packaging Disposal: Rinse empty containers with water. Dispose of containers in accordance with chemical waste regulations.
Precautions: Do not discharge to surface water, sewer, or ground.
UN Number: 3375
Proper Shipping Name: Ammonium Cerium(IV) Nitrate
Transport Hazard Class: 5.1 (Oxidizing substance)
Packing Group: II
Marine Pollutant: Not designated, but harmful to aquatic environments
Special Precautions: Avoid shipments near combustibles or fuels
Labelling: Requires clear hazard pictograms and risk phrases in accordance with local chemical safety regulations.
US TSCA: Listed
REACH Status (EU): Registration not individually required for laboratory quantities, check supplier status
SARA Title III: Not classified as an extremely hazardous substance
California Proposition 65: Not listed as carcinogenic or toxic
Other Regulatory Lists: Covered by international transport and workplace safety rules for oxidizers
