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Chemical Name: Isooctene
Synonyms: 2,4,4-Trimethyl-1-pentene, C8H16
Recommended Use: Intermediate for chemical syntheses, used in petrochemical processes
Supplier: Supplier details provided upon request
Emergency Phone: Contact local emergency services or supplier's emergency contact number
CAS Number: 107-40-4
UN Number: 3295
EC Number: 203-492-7
Product Code: Typically provided by manufacturer or distributor
Hazard Classes: Flammable liquid and vapor, Skin and eye irritant
GHS Classification: Flammable Liquids (Category 2); Skin Irritation (Category 2); Eye Irritation (Category 2A)
Signal Word: Danger
Hazard Statements: Highly flammable liquid and vapor. Causes skin and eye irritation. May cause respiratory irritation. Prolonged or repeated exposure may cause damage to the nervous system.
Pictograms: Flame, Exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gloves and eye/face protection. Use only outdoors or in well-ventilated areas. Avoid breathing vapors.
Chemical Identity: Isooctene
Concentration: Greater than 95%
Impurities: May contain traces of other C8 hydrocarbons
Molecular Formula: C8H16
Molecular Weight: 112.21 g/mol
Other Components: No relevant hazardous impurities expected under normal conditions
Inhalation: Move person to fresh air immediately. If symptoms such as drowsiness or respiratory distress develop, seek medical attention. Provide artificial respiration if breathing stops.
Skin Contact: Remove contaminated clothing, rinse skin thoroughly with soap and water. If irritation persists, get medical attention. Launder clothes before reuse.
Eye Contact: Flush eyes with plenty of water for at least 15 minutes, holding eyelids open. Remove contact lenses if present and easy to do. Get prompt medical assistance.
Ingestion: Do not induce vomiting. Rinse mouth with water. Seek immediate medical care. Never give anything by mouth to an unconscious person.
Most Important Symptoms: Redness, irritation, headache, dizziness, nausea
Notes to Physicians: Provide symptomatic treatment, monitor respiratory and nervous system functions
Suitable Extinguishing Media: Use dry chemical powder, carbon dioxide, or foam. Avoid direct water jets.
Specific Hazards: Vapors can form explosive mixtures with air. May produce toxic gases such as carbon monoxide during combustion.
Protective Equipment: Wear self-contained breathing apparatus and full protective clothing. Move containers away from fire area if safe. Cool surrounding containers with water spray.
Additional Information: Flammable vapors may travel long distances and ignite. Keep away from drains to prevent environmental contamination.
Personal Precautions: Evacuate unprotected personnel from the spill area. Eliminate all sources of ignition. Ventilate the area.
Protective Equipment: Wear splash-resistant goggles, chemical-resistant gloves, protective clothing, and respiratory protection.
Environmental Precautions: Prevent entry into waterways, drains, basements, or confined areas.
Clean Up Methods: Contain and absorb spill with inert material (sand or earth). Collect residue in tightly sealed containers for disposal. Rinse area with water after clean-up. Do not flush to sewer.
Safe Handling: Handle in a well-ventilated area. Avoid breathing vapors and direct contact with skin or eyes. Use explosion-proof equipment. Ground and bond container and receiving equipment.
Storage Conditions: Store in a cool, dry, well-ventilated place, away from heat and direct sunlight. Keep container tightly closed. Segregate from oxidizing agents, acids, and bases. Store locked up and out of the reach of children.
Incompatible Materials: Strong oxidizers, acids, halogens
Storage Packaging: Use containers made of compatible materials (e.g., stainless steel, aluminum). Do not use non-approved plastics.
Occupational Exposure Limits: No specific OSHA or ACGIH limits for isooctene. Use limits for similar hydrocarbons as a guide: TWA 300 ppm (total hydrocarbon).
Engineering Controls: Ensure adequate ventilation, preferably with local exhaust. Use enclosures and explosion-proof electrical fittings.
Personal Protection: Safety glasses with side shields, chemical-resistant gloves (nitrile, neoprene), flame-retardant clothing, and use of respirators if ventilation is insufficient.
Hygiene Measures: Wash hands thoroughly after handling. Remove and wash contaminated clothing before reuse. Do not eat, drink, or smoke when using this product.
Appearance: Clear, colorless liquid
Odor: Mild hydrocarbon scent
Odor Threshold: Not established
pH: Not applicable
Melting Point / Freezing Point: -107°C
Boiling Point: 116-126°C
Flash Point: -6°C (closed cup)
Evaporation Rate: Faster than water
Flammability: Highly flammable
Upper/Lower Flammability or Explosive Limits: 1.1% (lower), 6.0% (upper) by volume in air
Vapor Pressure: 48 mm Hg at 20°C
Vapor Density: 4 (air = 1)
Solubility: Insoluble in water; miscible with most organic solvents
Partition Coefficient (n-octanol/water): log Kow ≈ 4.5
Auto-ignition Temperature: 220°C
Decomposition Temperature: No reliable data
Viscosity: Low, similar to most aliphatic hydrocarbons
Relative Density: 0.69–0.72 (water = 1)
Chemical Stability: Stable under normal temperatures and recommended storage conditions
Reactivity: May react with strong oxidizers, acids, or peroxides
Hazardous Polymerization: May occur in the presence of strong acids or heat
Decomposition Products: Burning generates carbon monoxide, carbon dioxide, and possibly other toxic fumes
Conditions to Avoid: Heat, sparks, open flames, strong sunlight, static discharge
Incompatible Materials: Avoid contact with strong oxidizing agents, halogens
Acute Toxicity: Estimated oral LD50 (rat): >2000 mg/kg. Inhalation may cause drowsiness, dizziness, headache, and central nervous system effects.
Skin Corrosion/Irritation: Likely to cause moderate skin irritation after contact
Serious Eye Damage/Irritation: May produce moderate eye redness, pain, tearing
Respiratory or Skin Sensitization: Not expected to cause sensitization
Chronic Effects: Prolonged or repeated exposure may cause drying or cracking of skin due to defatting action
Other Effects: Excess exposure may cause anesthetic effects, confusion, and potentially liver or kidney damage if inhaled or ingested in large quantities
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, or OSHA
Mutagenicity: Not classified as a mutagen based on available data
Reproductive Toxicity: No evidence of adverse effects on fertility or fetal development
Aquatic Toxicity: Harmful to aquatic organisms at high concentrations; LC50 (fish, 96h): estimated 2–10 mg/L
Persistence and Degradability: Expected to biodegrade slowly in natural environments
Bioaccumulative Potential: High potential for bioaccumulation based on log Kow
Mobility in Soil: Low water solubility and high volatility limit long-term soil persistence
Other Adverse Effects: Volatile organic compound, contributes to formation of photochemical smog
Disposal Methods: Collect waste in sealed, labeled containers. Dispose through a licensed hazardous waste contractor. Incinerate only in permitted facilities with proper air pollution controls.
Contaminated Packaging: Triple rinse empty containers before disposal. Do not reuse packaging for other materials. Dispose of as hazardous waste.
Environmental Precautions: Avoid release to environment, water courses, or sewers
UN Number: 3295
Proper Shipping Name: Hydrocarbons, Liquid, n.o.s. (isooctene)
Transport Hazard Class: 3 (Flammable liquid)
Packing Group: II
Label: Flammable Liquid
Special Precautions: Keep away from heat, sparks, and open flames during transport. Provide adequate ventilation.
Marine Pollutant: Not classified as a marine pollutant under IMDG
OSHA Status: Regulated as a hazardous chemical under OSHA 29 CFR 1910.1200
TSCA Status: Listed in the TSCA inventory
RCRA Status: Classified as a hazardous waste due to flammability
SARA Title III: Not subject to the reporting requirements of SARA Section 313, but may be regulated as an extremely hazardous substance in some jurisdictions
California Proposition 65: Not listed
Other Regulations: Subject to local, state, federal, and international transportation and safety regulations. Users must ensure compliance with all applicable regulations for storage, handling, disposal, and reporting.
