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Understanding N-Pentane, N-Hexane, And N-Heptane

Dec 30, 2025 Leave a message

n-Pentane, n-Hexane, and n-Heptane are homologous alkanes (C5H12, C6H14, C7H16) differing in carbon chain length, leading to increased molecular weight, stronger London dispersion forces, higher boiling points, and lower vapor pressures as you go from pentane to heptane, making pentane most volatile (used in foams/aerosols), hexane a common solvent (oil extraction/cleaning), and heptane a fuel standard/solvent (coatings/analysis).

 

 

Property n-Pentane (C₅H₁₂) n-Hexane (C₆H₁₄) n-Heptane (C₇H₁₆)
CAS Number 109-66-0 110-54-3 142-82-5
Molecular Weight 72.15 g/mol 86.18 g/mol 100.21 g/mol
Boiling Point 36.1°C (97°F) 68.7°C (155.7°F) 98.4°C (209.1°F)
Melting Point -129.8°C -95.3°C -90.6°C
Density (20°C) 0.626 g/mL 0.659 g/mL 0.684 g/mL
Flash Point -49°C (-56°F) -22°C (-8°F) -4°C (25°F)
Vapor Pressure High (520 mmHg) Medium (150 mmHg) Lower (40 mmHg)
State at RT Very volatile liquid Volatile liquid Less volatile liquid
Solubility in Water Practically insoluble Practically insoluble Practically insoluble

 

GNEE BIO's Alkane Solutions for Global Buyers

  • Customizable Purity: We offer industrial-grade (≥99.0%) and high-purity (≥99.5%) variants of n-pentane, n-hexane, and n-heptane to fit your process needs.
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GNEE BIO is a professional chemical raw materials supplier located in Henan Province, China. We have passed quality system certification and have self-managed import and export rights. Our products are popular with customers. As a leading global supplier, we deliver certified chemical raw materials that comply with REACH, RoHS, ISO and other international standards. Our robust monthly production capacity ensures consistent quality and a reliable supply for bulk orders.

 

Normal pentane CAS 109-66-0

 

Foaming agent n-Pentane

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