A volatile oil distilled from the fresh flowers of Rosa damascena.

Characters. - Pale yellowish, with a strong odour of rose, and a sweetish taste.

Adulterations. - Sandal-wood oil, geranium oil, and other volatile oils; fixed oils; spermaceti.

Test. - When slowly cooled to near 10° C. (50° F.) the oil becomes a transparent solid, interspersed with numerous slender shining iridescent scale-like crystals. When rapidly cooled to 12.5° C. (54.5° F.) it congeals to a solid mass of light feathery shining scales or plates.