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Cyclohexanone

Cyclohexanone^[1]^[2]

Identifiers

CAS number

108-94-1

SMILES

C1CCCCC1=O

Properties

Molecular formula

C₆H₁₀O

Molar mass

98.15 g/mol

Appearance

Colorless, liquid

Density

0.9478 g/mL, liquid

Melting point

−16.4 °C

Boiling point

155.65 °C

Solubility in water

Slightly soluble

Solubility in ethanol

Miscible

Viscosity

0.898 cP at 25 °C

Thermochemistry

Std enthalpy of
formation Δ_fH^o₂₉₈

−270.7 kJ mol⁻¹

Std enthalpy of
combustion Δ_cH^o₂₉₈

−3519.3 kJ/mol⁻¹

Standard molar
entropy S^o₂₉₈

+229.03 J.K⁻¹.mol⁻¹

Hazards

EU classification

Harmful (Xn)

NFPA 704

R-phrases

R10, R20

S-phrases

(S2), S25

Flash point

44 C

Related Compounds

Related ketones

Cyclopentanone

Related compounds

Cyclohexanol

Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

Cyclohexanone is a six-carbon cyclic molecule with a ketone functional group. It is a colorless, oily liquid with an odor reminiscent of oil of peppermint and acetone. Over time, the color of the liquid changes to yellow. Cyclohexanone is slightly soluble in water (5-10 g/100 ml), but miscible with the most common organic solvents.

Additional recommended knowledge

Daily Sensitivity Test

Daily Visual Balance Check

Don't let static charges disrupt your weighing accuracy

Cyclohexanone is employed as an industrial solvent and as activator in oxidation reactions. It is also used in the production of adipic acid, cyclohexanone resins, caprolactam and nylon 6.^[3]