Product Name: 2-Ethylhexanoic Acid
Chemical Formula: C8H16O2
CAS Number: 149-57-5
Synonyms: Octanoic acid, 2-ethyl-
Recommended Use: Metal soaps, plasticizer precursor, lubricant additive, catalyst solvent
Supplier: Chemical distributors or direct manufacturers
Emergency Telephone: Local poison control centers or supplier emergency line
UN Number: 3265
Classification: Acute toxicity (oral, dermal, inhalation) – Category 4, Skin corrosion/irritation – Category 2, Eye damage/irritation – Category 2A
Physical Hazards: Flammable under some storage conditions, corrosive to certain metals
Health Hazards: Harmful if swallowed or inhaled, causes skin and eye irritation, prolonged exposure could result in damage to internal organs
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin irritation, causes serious eye irritation
Precautionary Statements: Avoid ingestion and contact with skin and eyes, use only outdoors or in well-ventilated areas, wear protective clothing and eye protection, wash thoroughly after handling
Chemical Name: 2-Ethylhexanoic Acid
Concentration: > 98%
Chemical Identity: Single substance
Impurities: Trace organics (<2%)
EC Number: 205-743-6
Inhalation: Move affected individual to fresh air promptly, seek medical attention if symptoms like coughing, dizziness, or shortness of breath persist
Skin Contact: Remove contaminated clothing, rinse skin immediately with plenty of water, use soap if available, seek medical attention for persistent irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present and easy to do, continue rinsing, seek medical attention immediately if irritation persists
Ingestion: Rinse mouth with water, do not induce vomiting, give water to drink if the person is conscious, call a physician or poison control center at once
Most Important Symptoms: Irritation or burns to affected areas, abdominal pain, headache, dizziness
Advice for Emergency Responders: Use protective gear, avoid direct contact, secure adequate ventilation
Suitable Extinguishing Media: Carbon dioxide, alcohol-resistant foam, dry chemical powder, water mist
Unsuitable Extinguishing Media: Straight water streams, as they might spread the liquid
Hazardous Combustion Products: Carbon monoxide, carbon dioxide, possibly corrosive vapors
Special Protective Equipment: Firefighters must wear positive pressure self-contained breathing apparatus and full protective gear
Specific Hazards: Combustion releases irritating and toxic fumes, runoff from firefighting may pollute water sources
Personal Precautions: Wear gloves, protective clothing, goggles, ensure proper ventilation, remove sources of ignition
Environmental Precautions: Prevent further leakage or spillage if safe to do so, do not discharge to drains, surface water, or soil
Methods for Containment: Absorb with inert materials like sand or earth, avoid using combustible material for cleaning
Cleanup Procedures: Collect spilled material in suitable containers for disposal, clean contaminated area with soap and water, ventilate the area
Advice for Emergency Responders: Ensure use of personal protective equipment, contain spill to prevent environmental release
Safe Handling: Avoid contact with skin, eyes, avoid inhalation of vapors or mist, use only in well-ventilated areas, wash hands thoroughly after use
Proper Storage: Store in tightly closed container made of compatible material, keep in cool, dry, well-ventilated place away from heat sources, acids, oxidizers, bases
Incompatible Materials: Strong oxidizing agents, strong reducing agents, bases, acids
Hygiene Measures: Do not eat, drink, or smoke in work area, wash thoroughly after handling, launder contaminated clothing before reuse
Exposure Limits: No established OSHA or ACGIH limits, recommend workplace exposure be kept as low as possible
Engineering Controls: Local exhaust ventilation or general ventilation, proper storage and containment facilities
Personal Protective Equipment: Chemical-resistant gloves, long-sleeved clothing, safety goggles or face shield, NIOSH-approved respiratory protection in case of inadequate ventilation
Environmental Controls: Avoid environmental release, implement spill containment, use closed systems for industrial processes
Appearance: Clear colorless or slightly yellowish liquid
Odor: Slight characteristic odor
Odor Threshold: Not available
pH: 3-3.5 (1% solution in water)
Melting Point: -59°C
Boiling Point: 228°C
Flash Point: 107°C (closed cup)
Evaporation Rate: Not determined
Flammability: May catch fire at high temperatures
Vapor Pressure: 0.04 hPa at 20°C
Vapor Density: Approx. 5.7 (air = 1)
Relative Density: 0.904 at 20°C
Solubility: Slightly soluble in water, miscible in organic solvents
Partition Coefficient: log Pow: approx. 2.7
Auto-ignition Temperature: 350°C
Decomposition Temperature: Not determined
Viscosity: 11 mPa·s at 20°C
Explosive Properties: Not explosive
Oxidizing Properties: Not oxidizing
Chemical Stability: Stable under normal temperatures and conditions, sensitive to heat, light, and air in long-term exposure
Reactivity: Reacts with strong oxidizers, acids, bases
Conditions to Avoid: Open flames, excessive heat, direct sunlight, high humidity, incompatible substances
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritating aldehydes and acids under fire or decomposition
Polymerization: Will not occur under standard storage conditions
Acute Toxicity (Oral): LD50 (rat): 2043 mg/kg
Acute Toxicity (Dermal): LD50 (rabbit): 1260 mg/kg
Inhalation Toxicity: No data available; avoid inhalation
Skin Corrosion/Irritation: Causes skin irritation, may produce redness and burns
Eye Damage/Irritation: Causes serious eye irritation and possible burns
Respiratory or Skin Sensitization: No reliable data on sensitization in humans
Chronic Effects: Possible liver and kidney toxicity with long-term exposure
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified as a carcinogen, but high doses in animal studies showed some reproductive toxicity
Other Information: Symptoms of overexposure include headache, dizziness, nausea, abdominal pain
Ecotoxicity: Toxic to aquatic life, especially to fish and daphnia, typical EC50 (48h, Daphnia): 85 mg/l
Persistence and Degradability: Biodegradable according to OECD guidelines, but persistence in low-oxygen water possible
Bioaccumulative Potential: Moderate log Pow suggests potential for accumulation in biological systems
Mobility in Soil: Low to moderate mobility, can leach into groundwater if released in sufficient quantity
Other Adverse Effects: Avoid contamination of water bodies, may affect aquatic organisms and food chains
Waste Disposal Method: Dispose of in accordance with federal, state, and local regulations, incineration may be appropriate for large quantities
Container Disposal: Empty containers must be rinsed, punctured or otherwise rendered unusable before recycling or disposal
Precautions: Avoid disposal into sewer or surface water, use licensed waste disposal contractors
Special Considerations: Do not allow product or rinsates to contaminate soil, groundwater, drains, or watercourses
UN Number: 3265
Proper Shipping Name: Corrosive liquid, acidic, organic, n.o.s. (2-Ethylhexanoic Acid)
Hazard Class: 8
Packing Group: III
Transport Labels: Corrosive (Class 8)
Special Precautions: Ship in tightly closed, properly labeled containers, avoid exposure to extremes of temperature or physical damage in transit
Additional Information: Check for local and international regulations during transport, emergency response guidelines apply in case of spillage
Inventory Listing: Listed on TSCA, EINECS/ELINCS, AICS, DSL/NDSL, ENCS, KECI, PICCS, NZIoC
SARA Title III: Not listed as hazardous under Section 302 or 313
CERCLA: Not classified as a hazardous substance
OSHA: Not specifically regulated
California Proposition 65: Not listed
International Regulations: Subject to workplace and consumer chemical safety reporting in many countries, REACH compliant in Europe, WHMIS Canada classification: D2B (Toxic Materials)
