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n-Hexane (C6H14) is a colorless liquid that is insoluble in water. It is obtained by fractional distillation of petroleum. Hexane is classified as flammable and moderately toxic. At low concentrations in air it is also explosive, but under equilibrium conditions these concentrations are only achieved at temperatures below 2°C. Its main use is as a solvent in the extraction of oils from seeds. It is also used in motor fuels, as a polyolefins solvent, as polymerization medium and paint diluent.

Molecular weight:86.178Critical temperature: 507.44 K
Melting point: 177.83 K Critical pressure: 3.031 MPa
Normal boiling point: 341.88 KCritical density: 232.8 kg/m3

See Table 1.

Table 1. Hexane: Values of thermophysical properties of the saturated liquid and vapor

Note. From C. F. Beaton, G. F. Hewitt, 1989, Physical Property Data for the Design Engineer, Hemisphere Publishing Corporation, New York, with permission.

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