Cyclobutane

(also tetramethylene), an alicyclic hydrocarbon; a colorless gas, with a weak odor, a boiling point of 12.9°C, and a density of 0.703 g/cm³ (at 0°C).

Cyclobutane is insoluble in water but is soluble in alcohol, acetone, and ether. It has all the chemical properties characteristic of cycloparaffins. It may be obtained from 1,4-dibromo butane and by other methods. Octafluorocyclobutane, C₄F₈, produced by the dimerization of tetrafluoroethylene is used in industry as a freon.