n-Heptane – Safety Data Sheet (SDS)

Product Name: n-Heptane
Other Names: Heptane (n-Heptane)
Product Codes: NHEP-1QT, NHEP-1G, NHEP-5G, NHEP-55G, NHEP-250, HEPTANE-1QT, HEPTANE-1G, HEPTANE-5G, H-61-55, H-61-250
CAS Number: 142-82-5
Type: Solvent
Supplier: USA Lab
Address: 12400 Belden Ct, Livonia, MI 48150
Phone: 734-855-4890
Emergency Phone: CHEMTREC 1-800-424-9300
GHS Classification:
- Flammable Liquids – Category 1
- Skin Irritation – Category 2
- STOT (Single Exposure, Narcotic Effects) – Category 3
- Aquatic Acute Toxicity – Category 1
- Aquatic Chronic Toxicity – Category 1
Signal Word: Danger
NFPA Ratings: Health (1), Flammability (3), Reactivity (0)

Hazard Statements:
- Extremely flammable liquid and vapor.
- May form explosive mixtures with air.
- Causes skin irritation.
- May cause drowsiness or dizziness.
- Very toxic to aquatic life with long-lasting effects.
Precautionary Statements:
- Read label before use. Keep out of reach of children.
- Keep away from heat, sparks, and open flames – no smoking.
- Use explosion-proof electrical and ventilating equipment.
- Use only non-sparking tools.
- Avoid release to the environment.
- Avoid breathing vapor or mist.
- Wear protective gloves and eye protection.
- Wash hands thoroughly after handling.
- Store locked up in a well-ventilated place. Keep cool.
- Dispose of contents and container in accordance with local, state, and federal regulations.
California Prop 65: Not listed.

Inhalation: Remove to fresh air and keep at rest in a comfortable position. If not breathing or breathing is irregular, administer artificial respiration. Seek medical attention immediately.
Skin Contact: Flush contaminated skin with plenty of water. Remove contaminated clothing and wash thoroughly. Seek medical attention if irritation persists.
Eye Contact: Rinse cautiously with water for several minutes, lifting upper and lower eyelids. Remove contact lenses if present. Continue rinsing for at least 10 minutes. Seek medical attention.
Ingestion: Rinse mouth with water. Do not induce vomiting unless directed by medical personnel. Never give anything by mouth to an unconscious person. Seek medical attention immediately.
Note to Physicians: Treat symptomatically. May cause CNS depression.

Flash Point: –3.89 °C (25 °F, Closed Cup)
Auto-Ignition Temperature: 285 °C (545 °F)
Flammable Limits: Lower: 1.05% | Upper: 6.7%
Extinguishing Media: Dry chemical, CO₂, foam, or water spray (fog).
Unsuitable Media: Do not use a direct water jet.
Specific Hazards: Extremely flammable; vapors may travel to ignition sources and flash back. Containers may explode when heated.
Protective Gear: Firefighters should wear self-contained breathing apparatus (SCBA).
Hazardous Decomposition: Carbon monoxide and carbon dioxide.

Keep away from heat, sparks, and open flames. No smoking.
Use explosion-proof electrical equipment.
Ground and bond containers during transfer.
Store in original container, tightly sealed, in a cool, dry, well-ventilated area.
Avoid contact with oxidizers and strong acids.
Store locked up and out of direct sunlight.

Component: Heptane (CAS 142-82-5)
Exposure Limits:
- ACGIH TWA: 400 ppm | STEL: 500 ppm
- NIOSH TWA: 85 ppm | CEIL: 440 ppm
- OSHA PEL: 500 ppm (2000 mg/m³)
Eyes/Face: Chemical splash goggles.
Skin: Chemical-resistant gloves (nitrile or equivalent).
Body: Flame-retardant or antistatic clothing.
Respiratory: Use NIOSH-approved respirator if ventilation is inadequate.
Ventilation: Explosion-proof local exhaust systems.

Acute Toxicity: LC₅₀ (rat, inhalation) = 48,000 ppm (4h)
Skin Irritation: Causes skin irritation.
Eye Irritation: Causes serious eye irritation.
STOT (Single Exposure): May cause drowsiness or dizziness (narcotic effects).
Aquatic Toxicity: LC₅₀ (fish, 96h) = 375 mg/L (Oreochromis mossambicus)
Bioaccumulation: Log Pow = 4.66 (potential bioaccumulative).
Persistence: May persist in environment; toxic to aquatic life.

UN Number: 1206
Proper Shipping Name: Heptanes
Hazard Class: 3 – Flammable Liquid
Packing Group: II
Marine Pollutant: Yes
Disposal: Dispose of product and container in accordance with all local, state, and federal regulations. Do not release into drains or waterways.

Last Updated: April 29, 2015 n-Heptane is a highly flammable solvent supplied by USA Lab. It is classified as a Flammable Liquid (Category 1), Skin Irritant (Category 2), and Aquatic Toxicant (Category 1). It may cause drowsiness or dizziness and is very toxic to aquatic life.