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Chemical Name: Cycloheptene
Synonyms: 1-Heptene, Cycloheptylene
Chemical Formula: C7H12
CAS Number: 628-92-2
Physical State: Clear colorless liquid that can emit a faint, sweet smell
Recommended Use: Intermediate for chemical synthesis and research, found more in labs than on factory floors
Hazard Classification: Flammable liquid, potential for skin and eye irritation, possible harmful vapors
GHS Signal Word: Warning
Hazard Statements: Flammable liquid and vapor, may irritate eyes and respiratory tract, prolonged skin contact can dry or crack skin
Precautionary Statements: Keep away from hot surfaces and ignitions, avoid breathing vapors, use in ventilated areas
Main Ingredient: Cycloheptene, purity can hit 98% or higher based on source
Impurities: Residual cyclohexene or cyclooctene possible in lower-grade batches
Eye Contact: Flush with water for several minutes, don’t rub, get medical attention if irritation sticks around
Skin Contact: Rinse off with soap and running water, take off contaminated clothing
Inhalation: Get to fresh air immediately, support breathing if any trouble shows up
Ingestion: Rinse mouth and don’t force vomiting, only a professional should make that call
Extinguishing Media: Use dry chemical, carbon dioxide, or foam; water may spread the liquid
Specific Hazards: Vapors can form explosive air mixtures, burns with a sooty flame
Protective Equipment: Full gear and self-contained breathing apparatus go a long way
Personal Precautions: Evacuate unnecessary people, avoid breathing vapors, ventilate the spot
Environmental Precautions: Don’t let it spill into drains or water bodies, cycloheptene shouldn’t end up in streams or lakes
Cleanup Methods: Use non-combustible absorbents, sweep up without making sparks, stick waste in a sealed container for disposal
Handling: Keep vessels tightly sealed, work in a fume hood, ground all containers and lines, avoid static buildup
Storage: Store away from direct sunlight, heat sources, open flames, and oxidizers; keep in a cool, dry place
Engineering Controls: Work in ventilated spaces, fume hoods cut down vapor inhalation
Personal Protective Equipment: Nitrile gloves, goggles, and lab coats offer solid protection; wear a respirator if vapor levels climb
Exposure Limits: No strict occupational exposure limits out there, but keep levels as low as you can manage, guided by solvent safety standards
Appearance: Clear, colorless liquid
Odor: Faint, somewhat sweet scent
Melting Point: About -12°C
Boiling Point: Roughly 118°C
Flash Point: Near 14°C
Vapor Pressure: Not especially high but noticeable, most potent at warmer temperatures
Density: Approximately 0.84 g/cm³
Solubility: Doesn’t play well with water, but dissolves in typical organic solvents
Vapor Density: Heavier than air, so vapor hugs the floor
Chemical Stability: Stable under most storage conditions
Reactivity: May react with oxidizing agents, can form peroxides in air if ignored for long stretches
Hazardous Reactions: Burns when near flames, forms soot and carbon monoxide during fire
Conditions to Avoid: Heat, sparks, open flame, long exposure to air
Acute Toxicity: Low for a hydrocarbon, but higher than water or alcohol; causes irritation at high exposure
Skin Contact: Can strip oils and dry out skin
Inhalation: High vapor levels bring headaches and dizziness, especially without ventilation
Ingestion: Upset stomach, nausea, and abdominal pain not out of the question
Chronic Exposure: Not much long-term data, but avoid routine contact
Aquatic Impact: Toxic to aquatic life, no safe discharge into water
Mobility: Floats on water, spreads quickly; vapor can travel along the ground
Persistence: Breaks down over time in air, sticks around longer in water or soil
Bioaccumulation: Possible but not heavily documented
Waste Method: Must send liquid and soaked materials to a licensed handler
Do Not: Pour down the drain or toss in regular trash
Best Practice: Use chemical waste services used by most research labs, incineration preferred for full destruction
UN Number: Classified as flammable liquid for shipping rules
Proper Shipping Name: Cycloheptene
Transport Hazard Class: Flammable liquid, grouped with other solvents
Packing Group: Group II (medium hazard)
Labelling: Flammable pictogram, health hazard where required
Regulations: Covered by workplace chemical safety standards, makes regular appearances on solvent risk lists
Restrictions: None for most users, but large-scale storage or transport falls under fire marshal rules
