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Products / Pentane
n-Pentane (left) & Isopentane (right)
CarbonHydrogen
Drag to rotate — same formula, different skeleton: that's why isopentane boils 8 °C lower
Pentane · CAS 109-66-0 / 78-78-4

Pentane

C₅H₁₂

A highly volatile light alkane available as n-pentane and isopentane, supplied in bulk tanker and railcar volumes for blowing-agent, extraction, and blending applications.

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Molecular weight
72.15 g/mol
Boiling point
36.1 °C / 97 °F
Flash point
-49 °C / -56 °F
Appearance
Colorless, highly volatile liquid
About Pentane

Pentane (C₅H₁₂) is among the most volatile of the liquid alkanes, with a boiling point close to room temperature. Superior Chemical Co. supplies both structural isomers: n-pentane, a straight five-carbon chain, and isopentane (2-methylbutane), a branched isomer with an even lower boiling point.

Because of its high volatility and clean combustion, pentane is widely used as a physical blowing agent in foam manufacturing and as a low-boiling extraction solvent. Due to its extremely low flash point, it is shipped exclusively in tanker and railcar volumes.

Common industrial uses

  • Blowing agent for polystyrene and polyurethane foam
  • Low-temperature extraction solvent
  • Calibration and reference standard
  • Aerosol propellant blending
  • Specialty fuel and combustion applications
Grades & blends
Isopentane Pentane (n-Pentane)
Available sizes
Tankers8,000 gal
Railcars28,500 gal
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Frequently asked
What's the difference between pentane and isopentane?
Both share the formula C₅H₁₂, but n-pentane is a straight chain while isopentane (2-methylbutane) is branched. The branching gives isopentane a lower boiling point (about 28 °C vs. 36 °C for n-pentane), which matters for blowing-agent and formulation applications sensitive to volatility.
Why is pentane only available in tanker and railcar volumes?
Pentane's extremely low flash point makes small-container handling and shipping impractical at scale for most industrial buyers, so Superior Chemical Co. supplies it in 8,000-gallon tanker and 28,500-gallon railcar volumes.
Is pentane used in extraction?
Yes — its low boiling point allows for gentle, low-temperature solvent recovery, which is valuable in some extraction workflows, though it requires strict flammability controls.

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