Oil of rosemary is a colorless or yellowish liquid with a cool smell and camphor smell.
The components of Oil of rosemary include: alpha - and beta-pinene, camphene, d-limonene, eucalyptus oil, dipentene, camphor, borneol, verbene enone, linalool acetate, sesquiterpene, and other components.
The amount of alpha-pinene, beta-pinene, and camphene varies with plant growth. In the buds, the ratio of alpha-pinene, camphene, and beta-pinene is 1:1:3, while in the mature leaves, the ratio is 4:2:1. The properties of rosemary oil depend on soil climate conditions, growing site and material collection time.