n-Heptane

n-Heptane is a highly flammable, colorless liquid with a gasoline-like odor, widely used as a laboratory reagent and industrial solvent. It evaporates quickly and poses significant health and environmental risks if mishandled.

CAS No: 142-82-5

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Formula

C₇H₁₆

Main Uses

Laboratory Chemicals

Appearance

Colorless, Volatile Liquid

Handling

Flammable – Use with Caution

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Safety Highlights

n-Heptane is classified as a flammable and hazardous liquid under OSHA regulations. It presents risks of aspiration, skin and eye irritation, and central nervous system effects. Proper ventilation, personal protective equipment (PPE), and fire safety protocols are critical for safe handling.

Flammable Liquid

Flash point at -4°C. Vapors can form explosive mixtures with air. Keep away from heat, sparks, flames, and static discharge.

Toxic on Contact

Harmful if inhaled or ingested. May be fatal if swallowed and enters the airway. Can cause dizziness, nausea, and drowsiness.

Corrosive Agent

Causes moderate skin irritation and serious eye irritation on direct contact. Wash thoroughly after handling.

Emergency Measures

In fire: Use CO₂, dry chemical, or foam. Avoid water spray. For exposure: Remove to fresh air, rinse eyes/skin thoroughly, do not induce vomiting, and seek medical attention.

Proper Storage

Store in a well-ventilated, cool, flammables-designated area. Keep containers tightly sealed and grounded. Avoid oxidizing agents.

Regulatory ID

UN No: UN1206 | DOT Hazard Class: 3 (Flammable) | Packaging Group: II

Environmental Care

Very toxic to aquatic life. May cause long-term harm. Prevent entry into drains or natural waterways.

PPE Required

Use flame-resistant gloves, chemical goggles, protective clothing, and an organic vapor respirator. Ground all equipment when transferring.

Frequently Asked Questions

Get quick, expert-verified answers to common questions about n-Heptane, including its industrial uses, inhalation risks, flammability hazards, safe storage practices, and environmental impact. This section supports safe handling and regulatory awareness.

What is n-Heptane used for?

n-Heptane is used as a non-polar solvent in laboratories, chromatography, adhesives, and oil extraction processes.

Is n-Heptane dangerous to inhale?

Yes. Inhalation can lead to CNS symptoms like dizziness, drowsiness, and nausea. Always use under a fume hood or in a well-ventilated area.

What makes n-Heptane hazardous?

It is highly flammable, irritating to skin and eyes, and can be fatal if aspirated into the lungs. Proper PPE and handling protocols are essential.

How should n-Heptane be stored?

Store in a cool, well-ventilated area away from heat and ignition sources. Keep in tightly closed, grounded containers.

Is n-Heptane harmful to the environment?

Yes. It is very toxic to aquatic life and persistent in the environment. Do not allow it to enter soil or water systems.

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