Product Name: Sodium Naphthenate
Chemical Family: Naphthenic acid salts
Synonyms: Sodium salts of naphthenic acids, Sodium petroleum naphthenate
Recommended Use: Used in wood preservation, as a corrosion inhibitor, flotation agent, emulsifier, and biocide among other industrial applications
Manufacturer/Supplier: [Contact information for manufacturing supplier]
Emergency Phone Number: [Emergency contact details]
CAS Number: 61789-36-4
Classification: Classified according to GHS as Acute Toxicity-Oral Category 4, Acute Toxicity-Dermal Category 4, Skin Irritation Category 2, Eye Irritation Category 2A, Aquatic Chronic Category 2
Label Elements: Signal word: Warning. Hazard pictograms: Exclamation mark, Environment. Hazard statements: Harmful if swallowed or in contact with skin. Causes skin and eye irritation. Toxic to aquatic life with long lasting effects.
Precautionary Statements: Avoid breathing dust, mist, and vapors. Wash hands after handling. Avoid release to environment. Wear protective gloves, protective clothing, eye and face protection. If swallowed: Call a poison center or doctor if you feel unwell. Rinse mouth. If on skin: Wash with plenty of soap and water.
Chemical Name: Sodium Naphthenate
Common Names: Naphthenic acid sodium salt
Concentration: 95–100% (balance mostly water or minor impurities)
Other Ingredients: Water and trace contaminants (less than 5%)
CAS Number: 61789-36-4
General Advice: Move exposed person to fresh air immediately. Keep victim warm and at rest. Remove contaminated clothing and shoes. Seek medical attention right away if symptoms develop or persist.
Eye Contact: Rinse carefully with plenty of water for at least 15 minutes. Hold eyelids apart. Remove contact lenses if present and easy to do. Continue rinsing. Get medical help if irritation persists.
Skin Contact: Wash with large amounts of soap and water for a minimum of 15 minutes. Remove contaminated clothing and footwear. Seek attention if symptoms occur.
Inhalation: Move affected person out into fresh air. Support breathing if necessary. Seek immediate medical advice if feeling unwell or if symptoms such as coughing or breathing difficulty occur.
Ingestion: Rinse mouth thoroughly. Do not induce vomiting. Seek immediate medical advice or attention.
Suitable Extinguishing Media: Use alcohol-resistant foam, dry chemical powder, carbon dioxide, or water spray. Do not use direct water jets.
Special Protective Equipment: Responders require self-contained breathing apparatus and standard protective gear to avoid inhalation or exposure to products of combustion.
Hazardous Combustion Products: Emits toxic and/or irritating fumes such as carbon oxides and sodium oxides if burned.
Advice for Firefighters: Stay upwind, keep out of smoke, and wear chemical-resistant clothing. Cool exposed containers with water spray to avoid pressure buildup and rupture. Prevent runoff from firefighting from entering waterways or sewers.
Personal Precautions: Evacuate unnecessary personnel, avoid breathing vapors or mist, ensure suitable ventilation, wear appropriate protective equipment such as gloves, goggles, impervious clothing, and, where appropriate, respirator.
Environmental Precautions: Stop leak if safe to do so. Prevent spillage from entering drains, waterways, and soil. Notify environmental authorities if release contaminates waterways.
Methods for Cleanup: Absorb spilled material with inert material like sand or earth. Sweep up and shovel into suitable containers for disposal. Wash area thoroughly with detergent and water. Prevent spread and ventilate affected area.
Safe Handling Procedures: Handle in well-ventilated areas, avoid skin and eye contact, avoid inhalation of vapors and mist. Wear proper PPE. Use good industrial hygiene practices. Avoid eating, drinking, or smoking while using the product. Prevent formation of aerosols.
Storage Conditions: Store in tightly sealed containers at room temperature, away from heat, sparks, flames, and incompatible substances such as strong acids and oxidizers. Store in original labeled containers in a cool, dry, and well-ventilated place. Keep out of reach of children.
Special Considerations: Do not reuse empty containers. Keep away from food and feedstuffs.
Exposure Limits: No established occupational exposure limits for sodium naphthenate. Follow standards for nuisance dusts or general chemical handling.
Engineering Controls: Use local exhaust ventilation or other engineering controls to keep airborne concentrations below recommended exposure limits. Provide emergency eye wash stations and safety showers.
Personal Protective Equipment (PPE):
Appearance: Dark brown liquid or viscous paste, can be semi-solid depending on concentration
Odor: Mild, characteristic petroleum/naphthenic odor
pH: 8.5–10 (10% solution in water)
Melting Point/Freezing Point: Below room temperature, may solidify at lower temperatures
Boiling Point: Above 100°C (due to water content)
Flash Point: Not highly flammable, above 100°C (closed cup, varies with formulation)
Evaporation Rate: Slow, varies with water content
Flammability: Not classified as highly flammable
Vapor Pressure: Low at ambient conditions
Vapor Density: Not available
Solubility: Miscible in water, emulsifies in many organic solvents
Partition Coefficient: Not determined
Decomposition Temperature: Not determined
Viscosity: Moderate to high depending on concentration
Chemical Stability: Stable under normal conditions of handling and storage.
Conditions to Avoid: Avoid contact with strong oxidizing agents, acids, extreme heat, and open flames. Prolonged exposure to direct sunlight can degrade the material.
Incompatible Materials: Reactive with oxidizers and strong acids, may cause violent reactions.
Hazardous Decomposition Products: Combustion or thermal breakdown releases toxic fumes of sodium oxides, carbon monoxide, and carbon dioxide.
Acute Toxicity: Estimated oral LD50 (rat): 500–2000 mg/kg; dermal LD50 (rat): 1100 mg/kg. May cause gastrointestinal distress, nausea, vomiting if ingested.
Skin Corrosion/Irritation: Causes moderate irritation, repeated or prolonged exposure may cause dermatitis.
Eye Damage/Irritation: Causes eye irritation, redness, tearing, may cause corneal injury with prolonged exposure.
Respiratory Sensitization: No confirmed cases, but inhalation of mists may irritate airways.
Carcinogenicity: Not classified as carcinogen by IARC, NTP, ACGIH, or OSHA.
Mutagenicity: Insufficient data.
Reproductive Toxicity: No known reproductive effects.
Chronic Effects: Prolonged or repeated skin contact may lead to drying or cracking. No evidence of systemic toxicity from low level exposure.
Toxicity to Aquatic Life: Highly toxic to aquatic organisms. Chronic exposure may cause long-term adverse effects in the aquatic environment. LC50 (fish, 96 hr): < 10 mg/L.
Persistence and Degradability: Not readily biodegradable, may persist in water and soil.
Bioaccumulative Potential: Potential for accumulation in aquatic organisms because of chemical structure.
Mobility in Soil: Moderate mobility, may migrate to groundwater if released to soil.
Other Adverse Effects: Disrupts drinking water quality, can damage aquatic ecosystems if released in bulk.
Waste Treatment Methods: Dispose of in accordance with national and local environmental regulations. Use a licensed hazardous waste disposer.
Product Disposal: Do not flush into freshwater, marine environments, or sewers. Incinerate in a chemical incinerator equipped with afterburner and scrubber if permitted.
Container Disposal: Empty containers may retain product residues; triple rinse and offer for recycling if permitted, otherwise dispose of as hazardous waste.
Special Precautions: Always wear suitable PPE when disposing.
UN Number: UN3082 (for marine pollutants)
Proper Shipping Name: Environmentally hazardous substance, liquid, n.o.s. (contains sodium naphthenate)
Transport Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III
Marine Pollutant: Yes
Label: Environmentally hazardous substance
Special Transport Notes: Ensure package integrity and correct labeling. Follow IMDG, DOT, ADR, and IATA requirements as applicable. Protect from rough handling, keep containers upright and secure.
TSCA Status: Listed on the US Toxic Substances Control Act (TSCA) Inventory
ECHA Status: Registered and regulated under REACH (EC) No. 1907/2006 as a substance of concern for aquatic toxicity
OSHA: Hazardous according to OSHA Hazard Communication Standard (29 CFR 1910.1200)
SARA Title III: Not listed as extremely hazardous, but subject to reporting if released in reportable quantities
RCRA: May meet criteria for hazardous waste due to aquatic toxicity
WHMIS Classification: D2B (Toxic), D2A (Very toxic), based on skin, eye, and environmental effects
Other Regulations: Subject to state, national, and international chemical safety and environmental legislation. SDS available upon request as per GHS/OSHA guidelines.
