N-heptane
What is n-Heptane? Do we encounter it in daily life?
n-Heptane is a chemical commonly found in industrial and research settings, but like many industrial solvents, it rarely appears in its pure form in ordinary daily life.
Density: 0.683 g/cm³
Boiling Point: 98.8 ± 3.0 °C at 760 mmHg
Melting Point: −91 °C (lit.)
Molecular Formula: C₇H₁₆
Molecular Weight: 100.202
Flash Point: −1.1 ± 0.0 °C
Exact Mass: 100.125198
LogP: 4.47
Appearance: Colorless liquid
Vapor Density: 3.5 (vs air)
Vapor Pressure: 45.2 ± 0.1 mmHg at 25°C
Refractive Index: 1.394
Storage Conditions:
Store in a cool, well-ventilated warehouse. Keep away from fire sources and heat. The warehouse temperature should not exceed 37°C. Keep containers tightly sealed. Store separately from oxidizing agents; do not mix in storage. Use explosion-proof lighting and ventilation facilities. Avoid using mechanical equipment and tools that may generate sparks. The storage area should be equipped with appropriate leak emergency response equipment and suitable containment materials.
Stability:
Chemical Properties: Stable under normal temperature and pressure. Can undergo isomerization reactions catalyzed by aluminum chloride. Reacts with halogens under sunlight or ultraviolet light to form halogenated derivatives.
Stability: Stable.
Incompatible Materials: Strong oxidizing agents, strong acids, strong bases, halogens.
Hazardous Polymerization: Does not occur.
🏭 The "Behind-the-Scenes" Role in Life
n-Heptane's primary applications are in industrial production and scientific research laboratories:
The "Unsung Hero" in Industry:
It serves as a solvent for dissolving rubber, paints, and inks, and as a cleaning agent in the printing industry.
It is also used to extract oils and fats from plant and animal sources.
A "Specialized Tool" in the Lab:
It is a standard reference fuel used in octane rating tests for gasoline.
In chemical analysis, it is used as a standard substance in chromatography, as well as a reagent in pesticide residue detection and spectroscopic analysis.
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