What is N-Heptane CAS 142-82-5?
N-Heptane (CAS No. 142-82-5) is a colorless, highly flammable liquid with a gasoline-like odor. As a non-polar solvent, it finds extensive use in applications requiring a hydrocarbon with specific boiling points and solvency characteristics, ranging from industrial formulations to analytical chemistry.
N-Heptane (CAS 142-82-5) - Properties
Molecular Formula: C₇H₁₆
Molecular Weight: 100.20 g/mol
Purity: ≥ 99%
Grade: High-Purity (suitable for industrial, laboratory, and art applications)
Appearance: Clear, colorless liquid
Odor: Mild, gasoline-like odor
Boiling Point: 98.4°C (209.1°F)
Melting Point: -90.6°C (-131°F)
Flash Point: -4°C (24.8°F) (closed cup)
Density: 0.684 g/cm³ at 20°C
Solubility:
- In Water: Practically insoluble. ~0.0003% (3 ppm) at 25°C.
- Water in Heptane: Slightly soluble.
- Organic Solvents: Miscible with most common organic solvents such as ethanol, diethyl ether, acetone, chloroform, and benzene.
Chemical Properties
- Category: Non-polar solvent, saturated alkane.
- Reactivity: Generally stable under recommended storage conditions.
- Reactive Groups: Reacts vigorously with strong oxidizing agents (e.g., nitric acid, chlorates) posing a fire and explosion risk.
- Stability: Stable, but highly flammable.
- Octane Rating: Defined as 0 octane on the octane rating scale for gasoline.
N-Heptane (CAS 142-82-5) - Uses
Industrial Solvent: Widely used in the formulation of paints, coatings, adhesives, and inks due to its excellent solvency for non-polar substances.
Pharmaceutical & Chemical Synthesis: Serves as a reaction solvent, extraction solvent, or crystallization solvent in the manufacturing of active pharmaceutical ingredients (APIs) and other fine chemicals.
Octane Rating Standard: Heptane is assigned an octane rating of 0 and is used in conjunction with Isooctane (100 octane) as a primary reference fuel to determine the octane number of gasoline.
Laboratory Reagent: Utilized extensively in analytical chemistry, including gas chromatography, spectroscopy, and as a diluent or extraction solvent.
Rubber & Plastics Industry: Employed as a solvent or diluent in the processing of certain rubbers and plastics.
N-Heptane (CAS 142-82-5) - Health
Flammability: Extremely Flammable Liquid and Vapor.
N-Heptane Safety Data Sheet
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