Table 2: Physicochemical properties of the essential oils: yield v/w %, density to 20°C (), and refraction indexes ().

Physicochemical propertiesEssential oils
O. vulgare T. vulgaris

Yield v/w % 0.4–1.6%1.0–1.3%
(g/mL) 0.9320.923
1.4881.504