Related entry: Oil of Cypress
Cypress Oil. N. N. R. 1917. Oleum Cupressi.—A volatile oil distilled from the leaves and young branches of Cupressus sempervirens. It has a specific gravity of 0.88 to 0.89 at 15° C. (59° F.) and an optical rotation of + 4° to + 18°. It contains furfural, d-pinene, d-camphene, cymene, d-sylvestrene, d-terpineol, and esters of the same, l-cadinene and cypress camphor. It is used as an inhalant in whooping cough by sprinkling on the pillow and coverlet of the patient.