Hexane (data page)

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This page provides supplementary chemical data on n-hexane.

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions.

Structure and properties

Structure and properties
Index of refraction, nD 1.3727 at 20 °C
Abbe number ?
Dielectric constant, εr 1.890 ε0 at 20 °C
Bond strength  ?
Bond length
Bond angle  ?
Magnetic susceptibility  ?
Surface tension[1] 20.5 dyn/cm at 0 °C
18.4 dyn/cm at 20 °C
13.4 dyn/cm at 68 °C
Viscosity[2] 0.4012 mPa·s at 0 °C
0.3258 mPa·s at 20 °C
0.2798 mPa·s at 40 °C
0.2288 mPa·s at 80 °C

Thermodynamic properties

Phase behavior
Triple point 178.0 K (–95.1 °C), 1.23 Pa
Critical point 507.6 K (234.5 °C), 3020 kPa
Std enthalpy change
of fusion, ΔfusHo		 13 kJ/mol
Std entropy change
of fusion, ΔfusSo		 70 J/(mol·K)
Std enthalpy change
of vaporization, ΔvapHo		 28.85 kJ/mol at 68.8 °C
Std entropy change
of vaporization, ΔvapSo		  ? J/(mol·K)
Solid properties
Std enthalpy change
of formation, ΔfHosolid		  ? kJ/mol
Standard molar entropy,
Sosolid		  ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
Liquid properties
Std enthalpy change
of formation, ΔfHoliquid		 –198.7 kJ/mol
Standard molar entropy,
Soliquid		 295 J/(mol K)
Enthalpy of combustion, ΔcHo –4163 kJ/mol
Heat capacity, cp 197.66 J/(mol K)
Gas properties
Std enthalpy change
of formation, ΔfHogas		 –167.2 kJ/mol
Standard molar entropy,
Sogas		 388.82 J/(mol K)
Heat capacity, cp 142.6 J/(mol K) at 25 °C
van der Waals' constants[3] a = 2471 L2 kPa/mol2
b = 0.1735 liter per mole

Vapor pressure of liquid

P in mm Hg11040100400760152038007600152003040045600
T in °C–53.9–25.0–2.315.849.668.793.0131.7166.6209.4 — —

Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.

log10 of Hexane vapor pressure. Uses formula: obtained from CHERIC[4]

Distillation data

Spectral data

References

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