Product Name: Rare Earth Naphthenate
Chemical Family: Rare Earth Metal Carboxylate
Molecular Formula: Mixture of rare earth elements (such as Lanthanum, Cerium, Neodymium) and Naphthenic Acid
Synonyms: Rare Earth Metal Naphthenate, RE Naphthenate Complex
Recommended Use: Catalytic and lubricant additive, chemical intermediate, paint drier
Supplier: Industrial chemical manufacturers and distributors
Emergency Information: Chemtrec 1-800-424-9300 (24-hour response)
Classification: Harmful if swallowed, causes serious eye irritation, may cause skin irritation, may cause respiratory discomfort
GHS Signal Word: Warning
Hazard Statements: May cause long-lasting harmful effects to aquatic life; harmful if inhaled or ingested; irritating to eyes and skin
Pictograms: Exclamation mark, environment
Precautionary Statements: Avoid breathing dust, fumes, or mist; avoid release to the environment; wear protective gloves and eye protection
Rare Earth Naphthenate: 60-90% (mixture of lanthanum, cerium, neodymium naphthenates)
Naphthenic Acid: 10-25%
Other Minor Constituents and Impurities: trace to 10% (may include trace heavy metals such as iron, zinc, and copper compounds)
Chemical Abstracts Service (CAS) Numbers: Rare earth naphthenates (CAS varies), Naphthenic acid (CAS 1338-24-5)
Inhalation: Move affected person outdoors to fresh air. Seek medical attention if breathing difficulties or irritation persist. Offer oxygen if symptoms are severe.
Skin Contact: Remove contaminated clothing, rinse skin gently with plenty of water for at least 15 minutes, use gentle soap. Seek medical attention if irritation or redness occurs.
Eye Contact: Rinse eyes carefully with water for several minutes, removing contact lenses if easy. Continue rinsing, and call a poison center or doctor if eye irritation persists.
Ingestion: Rinse mouth thoroughly with water, do not induce vomiting unless directed by medical personnel. Call poison control or get medical help immediately. Never give anything by mouth to an unconscious person.
Suitable Extinguishing Media: Dry chemical powder, foam, carbon dioxide, sand
Unsuitable Media: Do not spray water directly onto spilled product
Specific Hazards: Thermal decomposition may release carbon oxides, rare earth metal oxides, and irritating vapors. Fumes may be hazardous.
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing. Avoid inhalation of combustion products.
Fire-fighting Advice: Move containers away from fire if safe to do so. Cool closed containers with water spray.
Personal Precautions: Evacuate non-essential personnel, ventilate area, avoid breathing fumes, wear personal protective equipment including gloves, protective eyewear, and suitable respiratory protection.
Spill Cleanup Methods: Contain and absorb spill using inert material (sand, earth, or vermiculite), scoop up and place into suitable closed containers for disposal. Wash area with water after material pickup, using minimal water to avoid spread.
Environmental Precautions: Prevent entry into sewers, water courses, or soil. Notify authorities if large spills enter waterways.
Handling: Use only with adequate ventilation, avoid contact with skin, eyes, and clothing. Do not breathe dust or fumes. Use personal protection recommended in Exposure Controls.
Safe Storage: Store in tightly closed, clearly labeled containers away from heat, sparks, open flames, and strong oxidizers. Keep in a dry, cool, well-ventilated space. Prevent temperature extremes. Store away from incompatible substances—strong acids, bases, and oxidizers.
Hygiene Measures: Wash thoroughly after handling, especially before eating, drinking, or smoking. Remove contaminated clothing and wash before reuse.
Engineering Controls: Use local exhaust or general room ventilation to control airborne levels. Install eyewash stations and safety showers near work area.
Occupational Exposure Limits: No specific OSHA or ACGIH limits established for rare earth naphthenates; use general dust and mist exposure limits (OSHA PEL: 15 mg/m³ total dust).
Personal Protection: Chemical-resistant gloves (nitrile or neoprene), goggles or chemical safety glasses, and flame-retardant lab coats. In case of insufficient ventilation, wear an approved respirator suitable for organic vapors.
Environmental Exposure Controls: Prevent substance release into environment. Use secondary containment.
Appearance: Amber to brown viscous liquid or semi-solid
Odor: Slightly pungent, oily odor
Odor Threshold: Not established
pH: Not applicable (non-aqueous)
Melting Point / Freezing Point: Typically below 0°C, varies with composition
Boiling Point: Decomposes before boiling
Flash Point: Above 70°C (varies between batches)
Evaporation Rate: Slow, not volatile
Flammability: Not highly flammable but may burn under forceful ignition
Vapor Pressure: Very low at ambient temperatures
Vapor Density: Not determined
Solubility in Water: Low to insoluble
Solubility in Organic Solvents: Readily soluble in aromatic and aliphatic hydrocarbons
Partition Coefficient (n-octanol/water): Not determined
Auto-Ignition Temperature: Above 200°C
Decomposition Temperature: Above 150°C
Viscosity: Viscous liquid, specific viscosity depends on grade
Density: Typically 0.9-1.1 g/cm³
Chemical Stability: Stable under normal ambient and anticipated storage and handling conditions.
Reactivity: Reacts with strong acids and oxidizing agents, may release flammable or toxic gases in thermal decomposition.
Hazardous Decomposition: Carbon monoxide, carbon dioxide, rare earth oxides, acrid fumes, water vapor, smaller organic acid fragments.
Conditions to Avoid: Excessive heat, open flames, sparks, high temperatures, and incompatible chemicals.
Polymerization: Not known to occur.
Incompatibilities: Acids, alkalis, strong oxidizers, reducing agents.
Acute Toxicity: Oral LD50 (rat) estimated > 2000 mg/kg. Harmful if swallowed; may cause gastrointestinal irritation, nausea, or vomiting.
Skin Corrosion/Irritation: May cause skin redness, dryness, or mild irritation with repeated exposure.
Eye Damage/Irritation: Causes serious irritation, burning, watering.
Respiratory Sensitization: May cause coughing, sneezing, and nasal discomfort if inhaled.
Chronic Effects: Long-term skin exposure may lead to dermatitis; long-term overexposure to rare earths can accumulate in the body, but bioaccumulation in humans not well characterized.
Carcinogenicity: No evidence known specific to this preparation.
Mutagenicity: Not classified as mutagenic.
Reproductive Toxicity: No data available for reproductive or developmental effects.
Ecotoxicity: May cause long-term negative effects to aquatic life. Rare earth compounds and naphthenic acids have moderate to high aquatic toxicity (LC50 values for fish and aquatic invertebrates typically 1-100 mg/L).
Persistence and Degradability: Naphthenic acids have moderate biodegradability; rare earth compounds persist in environment.
Bioaccumulation Potential: Rare earth elements may bioaccumulate in aquatic organisms and sediments.
Mobility in Soil: Low water solubility limits leaching, but naphthenates can move in soils under some conditions.
Other Adverse Effects: Product can contribute to oxygen depletion in water if spilled; may change pH of aquatic environments.
Waste Treatment Methods: Incinerate in a chemical incinerator equipped with afterburner and scrubber, or dispose of contents in accordance with local, regional, and national regulations.
Container Disposal: Empty containers may retain hazardous residues; rinse or triple-wash with suitable solvent before recycling or disposal.
Special Precautions: Do not dispose of in household garbage, stormwater drains, or the environment. Consult with licensed hazardous waste disposal contractor.
UN Number: Not classified as a dangerous good by the latest IATA, IMDG, or DOT transport regulations unless contaminated with highly flammable solvents
UN Proper Shipping Name: Not regulated
Transport Hazard Class: Not regulated; treat as combustible liquid in bulk shipment scenarios
Packing Group: Not regulated
Marine Pollutant: Yes, if shipped in significant quantities
Special Precautions for User: Secure containers tightly, keep upright and labeled. Prevent physical damage and avoid transporting with incompatible chemicals.
Environmental Hazards during Transport: Avoid release into waterways. Report and contain spills.
OSHA Hazard Communication Standard: Product is considered hazardous per OSHA 29 CFR 1910.1200
TSCA (Toxic Substances Control Act): Ingredients are listed or exempt
SARA Title III (EPCRA): Section 311/312: Immediate (acute) health hazard. Not subject to Section 302 (EHS), 313 reporting.
California Proposition 65: Not listed, but contains rare earth elements that may appear on local lists as research on hazards evolves.
International Regulations: Complies with EU REACH, DSL/NDSL (Canada), and other international chemical inventories based on composition
Labeling according to GHS: Contains hazard pictograms and risk/precautionary statements reflecting irritation and ecological impacts
Other Regulations: Site-specific permits may be required to store or use bulk rare earth naphthenates.
