Description

Hexane is a hydrocarbon with the chemical formula C₆H₁₄. It is:

A colorless, highly flammable liquid

Part of the alkane family (straight-chain and branched isomers)

Commonly used as an industrial solvent, in extraction processes (such as vegetable oil extraction), and in laboratories

Found in gasoline mixtures

Physical properties (typical for n-hexane):

Boiling point: ~69 °C

Density: ~0.66 g/mL

Non-polar and immiscible with water

⚠️ Hazards

Highly flammable liquid and vapor — ignites easily.

Central nervous system (CNS) toxin — can cause dizziness, headache, drowsiness, confusion.

Chronic exposure risk: peripheral neuropathy (numbness, tingling, muscle weakness).

Skin defatting/irritation — prolonged contact causes dryness or cracking.

Aspiration hazard — dangerous if swallowed and enters the respiratory tract.

Vapor inhalation — may cause respiratory irritation and nausea.

🧤 Safe Handling

Work in a fume hood or well-ventilated area — vapors are heavier than air and can accumulate.

Keep away from sparks, flames, heat, and static discharge.

Avoid breathing vapors; minimize open handling.

Don’t use near oxidizers.

Personal Protective Equipment (PPE)

Gloves: nitrile is typically recommended; avoid latex (poor resistance).

Eye protection: safety goggles.

Clothing: lab coat; avoid open-toed shoes.

Respiratory protection: if ventilation is poor, use appropriate organic-vapor cartridges (per institutional safety rules).

🔥 Storage

Store in tightly closed containers.

Keep in a flammable liquids cabinet.

Ground and bond containers during transfer.

Keep away from acids, oxidizers, and ignition sources.

⚡ Spill Response

Eliminate all ignition sources immediately.

Absorb small spills with inert materials (vermiculite, sand, spill pads).

Use PPE; avoid breathing vapors.

Place waste in sealed, labeled flammables containers.

🚑 First Aid

Inhalation: move to fresh air; seek medical attention if symptoms persist.

Skin contact: wash with soap and water; remove contaminated clothing.

Eye contact: rinse with water for ≥15 minutes; seek medical attention.

Ingestion: Do NOT induce vomiting; get medical help immediately.

🗑️ Hexane Waste Disposal Guidelines
1. Treat all hexane waste as hazardous waste

Hexane is:

A flammable liquid

A toxic solvent
Because of this, it must never be poured down the drain or evaporated in the open.

2. Use an approved, labeled waste container

Use a flammable-compatible container (metal or HDPE).

Must have a tight-fitting cap (hexane evaporates rapidly).

Label clearly: “Hexane Waste” or “Non-halogenated Solvent Waste.”

Include approximate contents if it’s a mixed solvent waste.

3. Store waste properly

Keep containers in a flammable cabinet.

Do not overfill; leave 10–20% headspace.

Keep away from oxidizers, acids, and ignition sources.

Ensure the container is grounded if transferring large volumes.

4. Segregate from incompatible waste streams

Do not mix hexane waste with:

Halogenated solvents (chloroform, dichloromethane)

Strong oxidizers

Reactive metals

Aqueous waste streams

Common acceptable grouping:
👉 “Non-halogenated organic solvent waste.”

5. Cleanup materials must also go into hazardous waste

Any materials contaminated with hexane—such as:

Wipes

Absorbent spill pads

Gloves
—should be placed in a sealed, labeled hazardous-waste bag or container, not regular trash.

6. Arrange pickup through your environmental health & safety (EHS) office

Typical process:

Submit container information to EHS.

Use the institution’s hazardous waste tag or online system.

EHS transports waste to a licensed disposal facility for recycling or incineration.

7. For small spills

Use inert absorbents (vermiculite, spill pads).

Dispose of absorbents as hazardous waste, NOT in general trash.

8. Never evaporate hexane as a disposal method

Intentional evaporation is usually prohibited due to:

Air quality regulations

Fire risk

Worker exposure