© 2026 Sinochem Nanjing Corporation,
All Right Reserved
Chemical Name: Heptanol
Chemical Formula: C7H16O
Synonyms: 1-Heptanol, n-Heptanol
CAS Number: 111-70-6
Appearance: This clear, oily liquid carries a distinctive, strong odor that's easy to spot around industrial environments.
Odor: A sharp, penetrating scent makes its presence well known, offering a quick sign that ventilation or careful handling makes sense.
Common Uses: Solvent for resins and oils, intermediate for plasticizers, fragrances in cosmetics, cleaning products, and chemical synthesis.
Boiling Point: Right around 175°C, so typical room conditions cannot volatilize it, yet open flames or careless heating make it risky.
Classification: Flammable liquid, skin and eye irritant, possible central nervous system depressant.
Health Hazards: Causes eye and skin irritation. If inhaled in significant amounts, central nervous system symptoms like dizziness or headaches show up. High concentrations might depress breathing.
Environmental Hazards: Not immediately toxic to aquatic life, but improper disposal or persistent leaks can add up, so extended care matters.
Fire Hazards: Liquid and vapor can catch fire—combustion kicks out irritating fumes and smoke.
Main Ingredient: 1-Heptanol
Purity: Common batches run above 99%, so reactions or toxicity issues usually tie back to the main chemical.
Impurities: Commercial supplies generally limit impurities due to consistent distillation processes, though isolated side products might crop up from older stock.
Eye Contact: Flush with water for several minutes. Individuals with contact lenses might need help removing them. Any vision changes or persistent discomfort mean it's time to see a medical provider.
Skin Contact: Remove contaminated clothing, rinse with running water and soap. If redness stays or irritation flares up, consult healthcare.
Inhalation: Move to fresh air. If symptoms remain or worsen, oxygen or medical attention can be critical.
Ingestion: Rinse mouth and avoid forcing vomiting. A quick trip to a medical facility for evaluation makes the most sense if large amounts go down.
Suitable Extinguishing Media: Foam, dry chemical, or carbon dioxide put out the flames. Water spray serves to cool surrounding areas, not directly douse the fire.
Specific Hazards: Fire creates toxic gases like carbon monoxide and carbon dioxide. Vapor travel can lead to fire jumping distances and cause flashbacks. Firefighting teams need to wear self-contained breathing apparatus.
Precautions: Keep containers cool with water and isolate the hazard area if safe to do so.
Personal Precautions: Provide good ventilation, avoid breathing vapors, and prevent skin or eye contact. Don proper gloves and goggles.
Environmental Precautions: Prevent release into drains or watercourses.
Containment and Cleanup: Soak up spillage with non-combustible absorbent material, like sand or earth. Gather residues in suitable sealed containers for disposal. Do not use open flames during cleanup.
Safe Handling: Use in well-ventilated spaces away from ignition sources, static discharge, and excessive heat. Ground all transfer and mixing equipment. Wear gloves, goggles, and lab coats when possible.
Storage Conditions: Store tightly closed in cool, dry, and well-ventilated places. Keep away from oxidizers, strong acids, or bases. Emergency eye-wash stations and showers should be nearby.
Incompatibility: Strong acids, bases, and oxidizers challenge stability and cause unwanted reactions.
Engineering Controls: Fume hoods or exhaust fans push vapors out of breathing zones. Mechanical ventilation takes the edge off even if temperatures climb.
Personal Protective Equipment: Chemical-resistant gloves, impact- and splash-resistant eyewear, full lab coats, and—for vulnerable work—respirators properly rated for organic vapors.
Workplace Limits: Specific exposure limits may not appear in all regulations, but minimizing time spent in high-exposure areas and sticking to good hygiene stops health complaints.
Hygiene Measures: Keep eating, drinking, and smoking far from the workspace. Wash hands and arms after handling.
Physical State: Liquid
Color: Clear or slightly yellow
Odor: Strong, somewhat floral or reminiscent of other alcohols
Melting Point: Around -34°C
Boiling Point: 175°C
Flash Point: 68°C (closed cup method)
Vapor Pressure: Fairly low at room temp but rises with added heat
Solubility: Limited in water, excellent in most organic solvents
Density: About 0.82 g/cm³
Viscosity: Slightly more viscous than water
Evaporation Rate: Below that of acetone, higher than glycerin.
Chemical Stability: Remains stable if kept away from heat, light, and air over long periods. Light and high temps can speed up decomposition.
Hazardous Reactions: Reactive with oxidizing agents and strong acids
Decomposition Products: Carbon monoxide, carbon dioxide, and possibly irritating organic vapors during combustion or extreme breakdown conditions.
Conditions to Avoid: Flames, sparks, static electricity, prolonged sunlight.
Acute Effects: Skin and eye irritation in high concentrations. Swallowing larger quantities leads to drowsiness, headaches, possibly stomach trouble.
Chronic Effects: Long repeated exposure may dry and crack skin, sensitize respiratory passages, or, rarely, affect liver and kidneys.
Routes of Exposure: Inhalation, ingestion, skin and eye contact dominate risk profiles.
Symptoms: Headaches, dizziness, irritation, drowsiness, mild in most accidental exposures.
Environmental Toxicity: Biodegrades over time, but slow release into water harms aquatic life. Large spills need reporting and prompt cleanup.
Persistence and Degradability: Somewhat persistent if not managed properly, yet environmental bacteria break it down in soil and water in a matter of weeks to months.
Bioaccumulation Potential: Not likely to build up significantly in animal tissue.
Mobility in Soil: Medium—spills can seep and pose problems for local groundwater without fast action.
Waste Handling: Avoid pouring down the drain or onto the ground. Approved hazardous waste contractors tend to offer the safest disposal routes; they incinerate or manage as flammable liquid waste.
Container Disposal: Empty drums and containers need full draining then rinsing before proper recycling or disposal. Leaving traces risks future fire or contamination events.
UN Number: 1993 (Flammable liquids, n.o.s.)
Proper Shipping Name: Flammable liquid, not otherwise specified
Hazard Class: 3
Packaging: Use tightly sealed, clearly labeled containers. Suitable for road, rail, sea, and air by following rules for flammable organic liquids.
Precautions During Shipping: Keep distant from heat sources, secure to avoid leaks, and assure clear hazard labeling throughout transit.
Global Regulations: Most major authorities (OSHA, EU REACH, Canadian WHMIS, Australian SWA) list heptanol as a hazardous substance, primarily for flammability and skin/eye irritation.
Label Elements: Boxes and drums show pictograms indicating flame risks and a need for skin/eye protection.
Worker Training: Regulations call for up-to-date safety training where regular heptanol use happens. Employees get updates on risks and emergency procedures as conditions evolve.
Storage and Documentation: Records for storage quantities, usage logs, and waste disposal meet local codes and keep sites audit-ready. Proper ventilation, signage, and secondary containment provide peace of mind for both compliance and safety.
