Product Name: Cobalt Naphthenate
Chemical Formula: Variable mixture based on cobalt content and naphthenic acid
CAS Number: 61789-51-3
Manufacturer: Supplier details as provided on packaging
Recommended Uses: Paint drier, catalyst for polymerization in coatings and resins
Emergency Contact: As found on the supplier label or SDS cover
Synonyms: Cobalt(II) naphthenate, Cobalt naphthenic acid salts
Hazard Class: Flammable liquid, acute toxicity, skin and eye irritant, possible carcinogen
Signal Word: Danger
Pictograms: Flame, health hazard, exclamation mark
Hazard Statements: Highly flammable liquid and vapor. Harmful if inhaled or swallowed. May cause skin, respiratory, and eye irritation. Chronic exposure may lead to serious health effects.
Precautionary Statements: Keep away from heat and ignition sources. Avoid breathing fumes, vapors, or spray. Use only outdoors or in well-ventilated areas. Wear protective gloves, clothes, and face protection. Wash hands and exposed skin after handling.
Main Component: Cobalt naphthenate (concentration varies, typically 6-12% cobalt)
Other Ingredients: Naphthenic acids and carrier solvent (often mineral spirits or hydrocarbons)
CAS Number for Cobalt Naphthenate: 61789-51-3
CAS Number for Solvents: Variable by manufacturer
Contaminants: Small amounts of other metal impurities depending on naphthenic acid source
Eye Contact: Rinse immediately with plenty of water for no less than 15 minutes. Remove contact lenses if present and easy. Seek medical attention.
Skin Contact: Remove contaminated clothing. Wash area thoroughly with soap and water. Get medical help if skin irritation or redness persists.
Inhalation: Move person to fresh air right away. Assist breathing if necessary. If symptoms like headache, dizziness, or nausea persist, seek medical advice.
Ingestion: Do not induce vomiting. Rinse mouth with water. Get medical attention immediately. Never give anything by mouth to an unconscious person.
Suitable Extinguishing Media: Use carbon dioxide, dry chemical, or foam. Water spray may be used to cool containers.
Unsuitable Extinguishing Media: Direct water jet may spread the product.
Specific Hazards: Vapors are heavier than air. May travel along surfaces to ignite from distant sources. Decomposition can release carbon oxides, cobalt oxides, acrid fumes.
Special Protective Equipment for Firefighters: Use self-contained breathing apparatus and full protective gear.
Firefighting Instructions: Remove containers from the area if safe. Dike fire-control water to prevent release to environment. Avoid breathing combustion products.
Personal Precautions: Wear chemical-resistant gloves, goggles, and appropriate face protection.
Environmental Precautions: Prevent entry into drains, sewers, or waterways. Inform authorities in case of large spills.
Cleanup Procedures: Use non-sparking tools and explosion-proof equipment. Absorb with inert material like sand or earth. Collect in properly labeled container for disposal. Avoid raising dust.
Ventilation: Open windows and doors to provide fresh air.
Handling: Open containers carefully in well-ventilated zones. Avoid skin and eye contact. Prevent inhalation of vapors. Use static discharge protection. Do not smoke, eat, or drink during use.
Storage: Store in tightly closed original containers. Keep in a cool, dry, ventilated area away from incompatible substances such as oxidizers. Keep away from direct sunlight, sparks, and open flames. Ensure storage area is spill-sealed and labeled with hazard signage.
Special Instructions: Rotate stock to use oldest containers first.
Occupational Exposure Limits: Cobalt 0.02 mg/m³ (ACGIH TLV-TWA), consult local authorities for updates
Respiratory Protection: For high vapor concentrations or insufficient ventilation, use NIOSH-approved respirator
Skin Protection: Chemical-resistant gloves. Protective clothing to prevent skin exposure
Eye Protection: Chemical safety goggles and face shield
Engineering Controls: Local exhaust ventilation at sources of vapor or mist generation. Emergency eyewash stations and safety showers should be available.
Hygiene Measures: Wash hands, forearms, and face after handling, and before eating, drinking, or smoking.
Appearance: Viscous, dark brown-red liquid
Odor: Slightly pungent, hydrocarbon-like
Boiling Point: 150–245°C (range varies with solvent)
Melting Point: Not applicable (liquid at standard temperature)
Solubility: Insoluble in water, soluble in many organic solvents
Flash Point: Approximately 36–40°C (dependent on solvent)
Density: 0.8–1.1 g/cm³
Vapor Pressure: Variable, elevated under heat
Autoignition Temperature: 345°C or above, varies with solvent
Viscosity: Medium to high, depending on concentration
Chemical Stability: Stable under standard conditions, sensitive to air and light over certain periods
Reactivity: Reacts with strong oxidizers and acids
Conditions to Avoid: Heat, sparks, open flame, direct sunlight
Incompatible Materials: Strong oxidizing agents, strong acids, halogens
Hazardous Decomposition Products: Cobalt oxides, carbon monoxide, carbon dioxide, noxious gases
Polymerization: Will not occur under normal handling and storage
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Effects: Causes skin and eye irritation, respiratory discomfort, headaches, stomach pain if swallowed
Chronic Effects: Long-term repeated exposure may cause sensitization, damage to heart, lungs, thyroid, and liver. Cobalt compounds are possible human carcinogens (IARC Group 2B).
Symptoms: Redness, itching, cough, wheezing, dizziness, nausea
LD50/LC50: Precise values depend on preparation; toxic at low levels
Medical Conditions Aggravated: Pre-existing skin, respiratory, or thyroid disorders
Ecotoxicity: Harmful to aquatic life with long-lasting effects. Cobalt ions present hazards for fish, algae, and invertebrates.
Persistence and Degradability: Not readily biodegradable.
Bioaccumulative Potential: Cobalt can accumulate in aquatic organisms.
Mobility in Soil: May persist in soils and sediments.
Other Harmful Effects: Runoff from spills or improper disposal threatens water sources and soil.
Product Disposal: Treat as hazardous waste. Dispose through licensed disposal contractors in accordance with national, regional, and local regulations.
Container Disposal: Remove all product residue. Containers should not be reused. Incinerate, landfill, or recycle containers where permitted.
Precautions: Do not pour into drains, sewers, or the environment.
Waste Code: Check local codes for cobalt-containing hazardous waste
UN Number: 1993
UN Proper Shipping Name: Flammable Liquid, N.O.S. (containing Cobalt Naphthenate and hydrocarbon solvent)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: III (Moderate hazard)
Labeling Requirements: Flammable liquid label, proper shipping name, UN number
Special Precautions: Avoid transporting with food or feedstuffs. Keep drums upright and secure.
TSCA: Listed on the U.S. Toxic Substances Control Act Inventory
OSHA: Classified as hazardous. Observe workplace exposure limits.
SARA Title III: May be subject to reporting requirements as a toxic chemical.
REACH (EU): Registration required for manufacture or import above threshold quantities
Canada (WHMIS Classification): Controlled product, B2: Flammable, D2A: Very toxic
Other Regulations: Refer to national/international guidelines for environmental and occupational safety compliance
