Cas Number


Other Names


The formula



Cyclohexane is a cycloalkane with the molecular formula C6H12 (the alkyl is abbreviated Cy).Cyclohexane is mainly used for the industrial production of adipic acid and caprolactam, which are precursors to nylon. Cyclohexane is a colourless, flammable liquid with a distinctive detergent-like odor, reminiscent of cleaning products (in which it is sometimes used).

Physical and Chemical Properties
Appearance clear liquid
Odor Chloroform-like odor; solvent odor; mild sweet odor
Molecular Weight 84.16 g/mole
Color Clear Colorless
Boiling Point 80.7°C (177.3°F)
Critical Temperature 280.4°C (536.7°F)
Flash point −20 °C
Melting Point 6.47°C (43.6°F)
Specific Gravity 0.7781 (Water = 1)
Vapor Pressure 12.9 kPa (@ 20°C)
Vapor Density 2.98 (Air = 1)
Dispersion Properties See solubility in water, methanol
Solubility Soluble in methanol. Insoluble in cold water
Purity 99.8% min
Color 10 max, APHA
Benzene 0.1% max
Sulfur 5 ppm max
Distillation point 80.0 C min (IBP), 82.0 C max (Dry Point)
Higher carbon 0.1% max
Non-volatiles 1.0 max mg/100ml

1. Cyclohexane is used as a nonpolar solvent for the chemical industry, and also as a raw material for the industrial production of adipic acid and caprolactam

2. Commercially most of cyclohexane produced is converted into cyclohexanone-cyclohexanol mixture (or "KA oil") by catalytic oxidationBookmarkthe reverse case, caprolactam production is more likely. Such ratio in KA oil can be controlled by selecting suitable oxidation catalyst. Some of cyclohexane is used as an organic solvent

3. Cyclohexane is used as a solvent, oil extractant, paint and varnish remover, dry cleaning material, and in solid fuels. It is also used as a insecticide itself