Product Name: Refined Degreased Naphthenic Acid
Chemical Family: Naphthenic Acid Derivatives
Synonyms: Hydrogenated naphthenic acid, Mineral oil fatty acids
Recommended Use: Industrial lubricant formulations, corrosion inhibitors, metallic soaps, fuel additives
Manufacturer/Supplier: [Contact information]
Emergency Phone: [Emergency contact number]
CAS Number: 1338-24-5
UN Number: 3082 (Environmentally hazardous substance, liquid, n.o.s.)
EC Number: 215-662-8
Molecular Formula: Variable (Complex mixture)
Relevant Identified Uses: Research, processing, production in chemical industry
GHS Classification: Skin corrosion/irritation (Category 1B), Serious eye damage/irritation (Category 1), Specific target organ toxicity - single exposure (Category 3)
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; harmful if swallowed; may cause respiratory irritation
Pictograms: Corrosive, exclamation mark
Precautionary Statements: Avoid breathing mist or vapors, wear protective gloves/protective clothing/eye protection/face protection, wash thoroughly after handling, use in well-ventilated area, do not eat, drink, or smoke during use
Routes of Exposure: Inhalation, ingestion, dermal, ocular
Symptoms: Burning sensation, redness, pain, eye injury risk, respiratory tract irritation, serious damage to mucous membranes
Substance: Naphthenic acids
Concentration: 85-95%
Other Constituents: Residual saturated and unsaturated fatty acids, hydrocarbons, trace metals (zinc, calcium, copper)
Impurities: Less than 2% by volume, possible traces of sulfur compounds
Chemical Nature: Complex mixture derived from the oxidation of crude oil fractions
CAS Number (Primary Component): 1338-24-5
EC Number (Primary Component): 215-662-8
Inhalation: Remove to fresh air, maintain breathing, seek medical attention if symptoms develop or persist; artificial respiration by trained personnel if breathing stops
Skin Contact: Remove contaminated clothing immediately, rinse skin with plenty of water (15 minutes minimum), soap may assist removal; seek medical attention for burns, ongoing irritation
Eye Contact: Flush eyes gently with water for at least 15 minutes, lifting eyelids occasionally; seek immediate medical attention
Ingestion: Do not induce vomiting; rinse mouth; give water if person is conscious; call poison control or get medical attention quickly
Important Symptoms:** Severe irritation, burning pain, possible ulceration or blindness (eye contact), difficulty breathing or swallowing, nausea
General Advice: Move exposed person to a safe area, remove contaminated items, monitor for respiratory tract symptoms
Suitable Extinguishing Media: Foam, dry chemical, carbon dioxide, water spray; avoid direct water stream to minimize spread
Unsuitable Media: Direct water jets (danger of fire spread)
Specific Hazards: Combustion produces carbon monoxide, carbon dioxide, toxic fumes, possible metal oxide smoke
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Fire Fighting Instructions: Move containers away from fire area if safe, keep cool with water spray
Hazardous Combustion Products: Carbon oxides, acrid smoke, trace volatile organic compounds
Explosion Risk: Closed containers may rupture when exposed to fire; vapors heavier than air may travel to ignition sources
Personal Precautions: Evacuate non-essential personnel, wear appropriate safety gear including chemical-resistant gloves, eye/face protection, and respiratory protection if vapor levels exceed safe limits
Environmental Precautions: Prevent release into drains, soil, waterways; report sizeable spills to environmental authorities
Clean-Up Methods: Absorb with inert material (sand, earth, diatomite), collect mechanically, transfer to labeled disposal containers; ventilate area, wash spill site with water after material pickup
Decontamination: Wash tools, protective equipment and surfaces with appropriate cleaning agents; prevent secondary contamination
Disposal: Follow all local, regional, and national regulations for hazardous waste; do not reuse containers
Safe Handling: Use only in well-ventilated areas, avoid contact with skin, eyes, and clothing; do not breathe dust, mist, or vapor; wash hands before eating, drinking, smoking, or using restroom
Incompatible Materials: Strong oxidizing agents, bases, amines, strong acids
Storage Conditions: Store in tightly closed containers, cool, dry, well-ventilated location; away from heat, direct sunlight, sources of ignition
Storage Temperature: Between 5°C and 30°C, prevent freezing and overheating
Special Requirements: Use corrosion-resistant containers; keep away from food or beverage areas; check regularly for leaks or degradation
Exposure Limits: No specific occupational exposure limit values assigned for naphthenic acids; general threshold limits for oil mist: 5 mg/m³ (ACGIH TLV)
Engineering Controls: Local exhaust ventilation, process enclosure, eye wash stations, emergency showers
PPE - Eye/Face: Chemical splash goggles, face shield where splashes likely
PPE - Skin: Chemical-resistant gloves (nitrile, neoprene), long-sleeved protective clothing, boots
PPE - Respiratory: NIOSH/MSHA-approved respiratory protection if vapor or mist above recommended limits
Hygiene Measures: Remove contaminated clothing immediately, wash thoroughly after handling, prevent contact with unprotected skin
Environmental Controls: Containment to prevent release, regular site monitoring for soil or air contamination
Appearance: Pale yellow to brown viscous liquid
Odor: Slightly oily, mild carboxylic acid smell
Odor Threshold: Not determined
pH: Acidic (typically <4, 10% aqueous solution)
Melting Point: -5°C to 20°C
Boiling Point: 210–300°C (decomposes before boiling completely)
Flash Point: 150–170°C (closed cup)
Evaporation Rate: Slow, not volatile under ambient conditions
Flammability: May be combustible at high temperatures
Upper/Lower Flammability Limits: Not established
Vapor Pressure: < 0.1 mmHg @ 20°C
Vapor Density: >1 (air = 1)
Relative Density: 0.91–0.97 g/cm³ @ 20°C
Solubility: Slightly soluble in water, readily soluble in organic solvents (alcohols, ethers, hydrocarbons)
Octanol/Water Partition Coefficient (Log Kow): >3 (estimated)
Auto-ignition Temperature: 380°C
Decomposition Temperature: >250°C
Viscosity: Variable, typically in range 200–900 mPa.s
Chemical Stability: Stable under recommended handling and storage conditions
Reactivity: May react with strong oxidizers and reducing agents
Conditions to Avoid: Heat, open flames, ignition sources, moisture
Incompatible Materials: Bases, oxidizing agents, strong acids, amines
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, various hydrocarbons, acrid fumes, metal oxides
Polymerization: Will not occur under normal conditions
Sensitive to Light or Air: Some decomposition may occur after prolonged exposure; keep sealed
Acute Toxicity: LD50 (oral, rat) >2000 mg/kg; LD50 (dermal, rabbit) >2000 mg/kg
Inhalation: Irritation of the respiratory tract, coughing, shortness of breath with high exposure
Skin Corrosion/Irritation: Causes burns and irritation; repeated exposure increases severity
Eye Damage/Irritation: Risk of severe eye injury, impaired vision or blindness
Ingestion Effects: Gastrointestinal irritation, nausea, vomiting, possible corrosive injury
Chronic Toxicity: Prolonged contact may lead to dermatitis, eczema, or systemic toxicity
Carcinogenicity: Not classified as a carcinogen by IARC, NTP, or OSHA
Mutagenicity / Reproductive Toxicity: No evidence from animal studies
Target Organs: Skin, eyes, respiratory tract
Ecotoxicity: Toxic to aquatic life with long-lasting effects; LC50 (fish, 96hr) 4–50 mg/L (varies with formulation)
Persistence and Degradability: Inherently biodegradable, partial mineralization over several weeks in water/soil
Bioaccumulation Potential: High; hydrophobic nature leads to accumulation in aquatic organisms
Mobility in Soil: Low to moderate; adsorbs strongly to sediment or soil organic matter
Other Adverse Effects: Can cause harmful impact on microorganisms, invertebrates, potential for groundwater contamination
Additional Information: Not considered ozone depleting, unlikely to persist as volatile organic compound in air
Waste Treatment Methods: Incinerate under controlled conditions at licensed facility; avoid landfill disposal
Container Disposal: Empty containers may retain residue; triple rinse before recycling or disposal
Sewage Disposal: Prohibited; do not discharge to sanitary sewer or natural waterways
Regulatory Compliance: Dispose of material and containers in accordance with local, state, and federal regulations on hazardous waste
Precautionary Measures: Use personal protective equipment during waste handling, avoid spillage and direct contact
UN Number: 3082
Proper Shipping Name: Environmentally Hazardous Substance, liquid, N.O.S (naphthenic acid)
Transport Hazard Class: 9 (Miscellaneous dangerous substances)
Packing Group: III
Marine Pollutant: Yes
Special Precautions for Transport: Keep away from incompatible materials, sources of ignition; containers tightly sealed and properly labeled during transport
Transport Labels: Miscellaneous hazardous, Environmentally hazardous substance, Marine pollutant
Transport Documentation: Comply with ADR/RID, IMDG, IATA requirements
USA Regulation: TSCA inventory listed, subject to SARA 311/312 hazard categories (acute, chronic health hazard), not subject to SARA 313 reporting
Canada Regulation: DSL/NDSL listed, WHMIS classification: Class E (Corrosive material)
EU Regulation: Complies with REACH registration, labeled under CLP Regulation EC 1272/2008 as corrosive and aquatic toxicant
Other International Regulations: Australian Inventory (AICS): Listed; China IECSC: Listed; Japan ENCS: Listed
Labeling Requirements: Signal word and hazard statements required, GHS/CLP-compliant stickers, hazard pictograms
Restrictions: Industrial use only, not for food, pharmaceutical, or cosmetic applications
Inventory Status: Present on most major international inventories; users must comply with all applicable regulations before purchase, transport, or use
