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Name: 1-Octadecene
Chemical Formula: C18H36
Common Appearance: Clear, colorless liquid with a mild hydrocarbon odor
Primary Uses: Used as a chemical intermediate in the manufacture of detergents, lubricants, and surfactants, found in research labs and sometimes used as a solvent in specialized scientific processes
Physical Hazards: Flammable liquid—ignites easily at higher temperatures and can emit a large volume of smoke
Health Hazards: Direct skin or eye contact causes irritation, inhalation of vapors leads to respiratory irritation if not enough ventilation, ingestion may cause gastrointestinal discomfort or more severe system effects with higher doses
Environmental Hazards: Harmful to aquatic life with long-lasting effects if spilled or released directly into waterways
Chemical Identity: 1-Octadecene (CAS Number 112-88-9)
Purity: Usually over 90% in standard chemical grades
Principal Impurities: Mixtures might contain small percentages of related long-chain alkenes
Inhalation: Move person to fresh air right away, supply oxygen if breathing feels difficult; seek medical attention if symptoms do not quickly get better
Skin Contact: Wash skin with soap and a lot of water; remove any contaminated clothing
Eye Contact: Flush eyes gently with running water, do not rub, and seek medical help if irritation sticks around
Ingestion: Do not induce vomiting, rinse mouth with water, call for professional medical help without delay
Suitable Extinguishing Media: Use foam, dry chemical, or carbon dioxide; do not use straight water as it may spread the material
Hazardous Combustion Products: Produces smoke, carbon monoxide, and carbon dioxide
Special Protective Equipment for Firefighters: Full protective gear and self-contained breathing apparatus respond best in this environment
Personal Protection: Wear gloves and goggles, use proper ventilation, and shut off all ignition sources
Spill Cleanup: Absorb spill with sand or inert material, collect it in containers for safe disposal, and keep it away from drains and natural waterways
Environmental Caution: Prevent the chemical from reaching soil, sewers, or rivers to avoid long-term damage
Handling Advice: Keep the work area well-ventilated and avoid open flames or sparks, minimize vapor and direct contact
Storage Conditions: Store in tightly closed containers in a cool, dry, and well-ventilated place, keep away from heat and strong oxidizing agents
Engineering Controls: Use local exhaust ventilation to keep vapor levels down
Personal Protective Equipment: Wear protective gloves, chemical splash goggles, and lab coats, ensure proper hygiene after handling
Exposure Limits: No occupational exposure limit set by OSHA or ACGIH, but best practice is to keep to the lowest practical exposure
Boiling Point: Around 315°C
Melting Point: Approximately 17°C
Flash Point: About 134°C (open cup method)
Solubility: Insoluble in water, mixes well with most organic solvents
Odor: Slight, similar to other hydrocarbons
Viscosity: Moderate for an alkene of this length
Chemical Stability: Stable under ordinary conditions, can polymerize or break down with intense heat or light
Reactivity: Reacts with strong oxidizers; avoid mixing with acids and bases to reduce the risk of unwanted reactions
Decomposition Products: Carbon monoxide and other harmful vapors come from burning or overheating
Acute Toxicity: Low acute toxicity by laboratory standards, but respiratory, skin, or eye irritation can show up after short periods of high exposure
Chronic Effects: Prolonged contact may cause drying or cracking of skin, long-term effects not fully understood due to limited research on chronic toxicity
Carcinogenicity: No listing by NTP, IARC, or OSHA
Aquatic Toxicity: Direct release to water poses risk to fish and aquatic plants, product sticks around in sediment
Persistence and Degradability: Breaks down slowly in natural environments, so spills linger if not promptly cleaned
Bioaccumulation: Long-chain alkenes like this tend to persist in the environment and may build up in animal tissue
Preferred Disposal Method: Incinerate or send to specialized chemical disposal; never pour down the drain or mix with regular waste
Container Disposal: Rinse empty containers thoroughly and treat them as hazardous unless completely decontaminated
Road and Rail Transport: Usually shipped as a regulated flammable liquid, needs proper labeling and hazard communication
Air Transport: Restrictions apply due to volatility and flammability, shipment by air must comply with international safety codes
Shipping Protection: Store in sturdy, leak-proof containers, away from sources of heat, friction, or static electricity during shipment
Global Chemical Inventories: Typically included in Europe’s REACH, US TSCA, and similar lists
Hazard Communication Standards: Requires clear hazard labeling according to OSHA, GHS, and similar rules globally
Worker Safety Laws: Employees must get training in safe handling, emergency response, and personal protection as set out in state and federal law
