© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: 4-Methyl-2-Pentene
Chemical Formula: C6H12
Synonyms: Isopropyl ethylene, Methylpentene-2
Classification: Flammable liquid, irritant
Main Hazards: Rapidly forms flammable vapor-air mixtures above room temperature; eye and respiratory irritation risk on exposure; possible skin dryness or cracking with repeated contact
Warning Signs: Strong odor, vapor accumulation, skin and eye discomfort
Pictograms: GHS02 (flame), GHS07 (exclamation mark)
Ingredient: 4-Methyl-2-Pentene
Purity Range: Usually above 95%
Impurities: Trace amounts of other hexene isomers
Inhalation: Move affected person to fresh air, seek medical attention if symptoms persist
Skin Contact: Wash area with soap and water, remove contaminated clothing; use lotion to relieve dryness
Eye Contact: Rinse cautiously with water for at least 15 minutes, get medical help if irritation continues
Ingestion: Rinse mouth, do not induce vomiting; seek immediate medical attention
Suitable Extinguishing Media: Dry chemical powder, foam, CO2
Unsuitable Media: Water jets may spread the liquid
Special Hazards: Produces toxic gases if burned; vapors may travel to source of ignition
Protective Equipment: Full protective gear and self-contained breathing apparatus
Personal Precautions: Ventilate area, avoid breathing vapors; wear chemical-resistant gloves and goggles
Environmental Precautions: Prevent run-off to sewers and waterways
Cleanup Methods: Use absorbent materials like sand or vermiculite; collect residue in sealed container
Safe Handling: Keep away from ignition sources, use spark-proof tools, ground containers during transfer
Storage Conditions: Store in tightly closed container, cool and well-ventilated place, segregated from oxidizers
Incompatibilities: Strong oxidizing agents, strong acids
Engineering Controls: Work under fume hood, use explosion-proof electrical equipment
Respiratory Protection: Use organic vapor cartridge respirator if exposure limits exceeded
Skin Protection: Nitrile or neoprene gloves, chemical-resistant apron
Eye Protection: Splash-proof safety goggles
Appearance: Clear, colorless liquid
Odor: Sweetish, gasoline-like scent
Boiling Point: 63–67°C
Melting Point: Not readily available
Flash Point: Low, well below room temperature
Vapor Pressure: Elevated at ambient conditions
Solubility: Insoluble in water, soluble in organic solvents
Density: Around 0.68 g/cm³
Chemical Stability: Stable under recommended storage conditions, sensitive to light and air over time
Risk of Hazardous Reactions: May react with oxidizers, forms explosive mixtures with air
Decomposition Products: Carbon monoxide, carbon dioxide, hydrocarbons
Conditions to Avoid: Heat, open flames, direct sunlight
Routes of Exposure: Inhalation, skin and eye contact
Short-term Effects: Respiratory and mucous membrane irritation, dizziness, headache
Long-term Effects: Not thoroughly studied in humans; repeated exposure can dry or crack skin
Toxicity Data: Data for acute toxicity limited, but solvents in this class tend to depress central nervous system with significant exposure
Aquatic Toxicity: Harmful to aquatic life with long lasting effects; spreads quickly due to volatility
Persistence and Degradability: Not readily biodegradable, evaporates to atmosphere faster than it breaks down in water
Bioaccumulation Potential: Expected to have low bioaccumulation in aquatic organisms
Mobility in Soil: High volatility makes atmospheric dispersion likely
Waste Handling: Treat as hazardous waste; incinerate at approved facility where possible
Containment: Avoid release into environment, use certified containers for transport
Special Instructions: Consult local authority for requirements, never pour into drains or on land
Proper Shipping Name: Flammable Liquid, N.O.S. (4-Methyl-2-Pentene)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: II or III depending on quantity and vendor
Special Transport Precautions: Use approved containers, keep away from sources of ignition, ensure clear labeling during all phases
Classification: Listed as hazardous under OSHA in the US
Label Elements: Flammable, irritant symbol required
Workplace Controls: OSHA or local authority standards apply, maintain airborne concentrations below recommended limits
Environment: Local authorities may restrict water discharge or large-scale land disposal
