Product Name: Cerium Naphthenate
Synonyms: Cerium Carboxylate, Cerium NA Salt
Chemical Formula: CnHmCeriumO
CAS Number: 68953-87-9
Intended Use: Catalyst for drying oils, used in coatings and inks
Manufacturer: Contact supplier
Emergency Contact: Local poison control or supplier’s emergency line
Recommended Restrictions: Not for food, drug, or household use
GHS Classification: Flammable Liquid Category 3, Acute Toxicity (oral, dermal, inhalation) Category 4, Skin Irritation Category 2, Eye Irritation Category 2A, Specific Target Organ Toxicity - Single Exposure Category 3
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor. Harmful if swallowed, in contact with skin, or inhaled. Causes skin and eye irritation.
Precautionary Statements: Keep away from heat or open flames. Wear protective gloves, eye protection, and clothing. Wash thoroughly after use. Do not eat, drink, or smoke when using.
Physical Hazards: Ignition risk above its flashpoint. Produces irritating fumes if burning.
Health Hazards: Harmful on repeated or prolonged contact. Inhalation can irritate respiratory tract.
Main Ingredient: Cerium Naphthenate
Cerium Content: Typically 6-8% by weight
Carrier Solvent: Naphthenic acid, Hydrocarbon solvents (commonly mineral spirits)
Additives: May include antioxidants, stabilizers for storage
Impurities: Rare earth element traces less than 1%
Eye Contact: Rinse immediately with water for at least 15 minutes, keep eyelids open. Seek medical attention.
Skin Contact: Remove contaminated clothing. Wash exposed skin with soap and water. If irritation develops, get medical help.
Inhalation: Move to fresh air, keep at rest in a position comfortable for breathing. If symptoms persist, get medical attention.
Ingestion: Rinse mouth. Do not induce vomiting. Never give anything by mouth to an unconscious person. Contact a physician or poison center right away.
Note to Physicians: Symptomatic and supportive treatment recommended.
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, carbon dioxide, sand
Unsuitable Extinguishing Media: Do not use water jets, as they may spread fire
Specific Hazards: Vapors can travel to ignition sources, forming explosive mixtures. Burning releases carbon oxides, cerium fumes.
Fire-Fighting Instructions: Wear self-contained breathing apparatus and protective gear. Use water spray to cool containers exposed to fire.
Special Protective Equipment: Full-face mask, chemical-resistant suit recommended for responders.
Explosion Data: Avoid accumulation of static electricity; containers may explode in fire.
Personal Precautions: Remove ignition sources. Ensure good ventilation. Avoid breathing vapors or contact with skin/eyes.
Environmental Precautions: Prevent spilled product from flowing into drains, waterways, or soil.
Clean-Up Methods: Absorb with inert materials like sand or vermiculite. Place in closed, labeled containers for disposal. Ventilate area.
Disposal: Hand over contaminated absorbent and collected product as hazardous waste.
Handling: Use only non-sparking tools. Ground/bond container and receiving equipment. Avoid inhaling vapors or mist. Use in well-ventilated areas.
Storage: Keep containers tightly closed in cool, dry, well-ventilated place away from heat, sparks, or open flame.
Incompatible Materials: Strong oxidizers, acids, alkalis, amines.
Other Precautions: Keep away from food and drink. Store separately from incompatible chemicals.
Occupational Exposure Limits: Not specifically regulated for cerium naphthenate. For hydrocarbon solvents, observe 8-hour TWA limits (e.g., 100 ppm for mineral spirits).
Engineering Controls: Enclosed handling and effective local exhaust required.
Personal Protection: Wear chemical-resistant gloves (nitrile, neoprene), safety goggles, and protective clothing. For vapor exposure above limits, wear approved respirator (organic vapor filter type).
Hygiene Measures: Wash hands before breaks, after handling, and before eating or drinking.
Environmental Controls: Use containment to prevent spills into the environment.
Appearance: Amber-brown, oily liquid
Odor: Faint petroleum or musty
Odor Threshold: Not determined
pH: Not applicable
Melting Point/Freezing Point: Below -20°C (varies by formulation)
Boiling Point/Range: 160°C–250°C
Flash Point: 40–65°C (varies with solvent)
Evaporation Rate: Moderate (ethyl ether = 1)
Flammability: Flammable liquid
Upper/Lower Flammability or Explosive Limits: LEL: approx. 0.7% v/v UEL: approx. 6.5% v/v
Vapor Pressure: 2–5 mmHg @ 20°C
Vapor Density: Heavier than air
Relative Density: 0.85–1.05 g/cm³
Solubility: Insoluble in water, soluble in most organic solvents
Partition Coefficient (n-octanol/water): Not established
Auto-ignition Temperature: 250–320°C
Decomposition Temperature: 160–180°C
Viscosity: 50–100 mPa.s @ 20°C
Chemical Stability: Stable under recommended storage, but heat and exposure to air cause slow decomposition.
Reactivity: May react with oxidizing agents or acids, generating heat.
Hazardous Reactions: Polymerization not expected.
Decomposition Products: Carbon dioxide, carbon monoxide, cerium oxides, irritating vapors.
Conditions to Avoid: High temperatures, sparks, flames, direct sunlight.
Incompatible Materials: Strong acids, oxidizers, reducing agents.
Acute Effects: Harmful if swallowed, inhaled, or absorbed through the skin. Irritates eyes, skin, and respiratory tract.
Chronic Effects: Prolonged or repetitive exposure can lead to dermatitis, respiratory irritation, or effects on the liver.
Inhalation Toxicity (LC50): No substantial data specific to cerium naphthenate, but symptoms may include headache, dizziness, nausea.
Oral Toxicity (LD50): Estimated to be above 2,000 mg/kg in rodents.
Skin Sensitization: Possible, especially for individuals with sensitive skin.
Carcinogenicity: Not classified as carcinogen by IARC, NTP, or OSHA.
Mutagenicity, Teratogenicity: Data insufficient.
Other Health Effects: No data links to reproductive toxicity.
Ecotoxicity: Toxic to aquatic organisms; may cause long-term negative effects in aquatic environments.
Persistence and Degradability: Slow breakdown in soil and water; naphthenate salts can persist.
Bioaccumulative Potential: Cerium compounds can accumulate in aquatic plants or animals.
Mobility in Soil: Low mobility due to affinity for organic matter.
Other Adverse Effects: Product accumulates in aquatic sediments.
Waste Treatment Methods: Dispose of as hazardous waste in accordance with local, regional, and national regulations.
Disposal of Product: Do not release to sewers or surface water. Incinerate under controlled conditions if permitted.
Disposal of Contaminated Containers: Containers must be completely emptied and rinsed before recycling or disposal. Follow regulations for hazardous packaging.
Waste Codes: Contact authorized waste handler for identification and labeling.
UN Number: UN 1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (Cerium Naphthenate solution)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III (minor hazard)
Marine Pollutant: Yes
Environmental Hazards: Avoid transport with food and animal feed.
Special Precautions for Transport: Keep containers upright; avoid rough handling. Comply with local shipping laws.
DOT, IATA, IMDG Compliance: Required.
Safety, Health, and Environmental Regulations: TSCA listed in the United States. Subject to SARA Title III reporting for some ingredients. Covered under REACH restrictions in Europe.
Labeling Requirements: GHS-compliant hazard and precautionary statements.
Other National Regulations: German Water Hazard Class WGK 3 (high hazard), Japan PRTR applicable solvents, China RoHS for restricted substances
Occupational Health Standards: Observe national workplace exposure limits for petroleum solvents.
Inventory Status: Registered/regulated in most developed countries as a hazardous substance.
Restrictions: Not for retail sale unless in accordance with chemical safety regulations.
