This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
A volatile oil distilled from the leaves and flowering tops of Thymus vulgaris Linne (nat. ord. Labiatae).
A yellowish or yellowish-red liquid, having a strong odor of Thyme, and an aromatic, pungent, afterwards cooling taste. It becomes darker and thicker by age and exposure to the air. Sp. gr., 0.900 to 0.930.
In half its volume of Alcohol, forming a clear solution, which is neutral or only very slightly acrid to litmus paper. Also soluble in all proportions, in Carbon Disulphide, and in Glacial Acetic Acid.
Its chief constituents are the hydrocarbons - (1) Cymene, C10H14. (2) Thymene, C10H16.
Dose, 1 to 5 m.; .06 to .30 c.c.
Its action is similar to that of copaiba. The chief use of oil of thyme is as a source of thymol. It has been employed in the treatment of bronchitis, gonorrhoea, gleet, leucorrhoea, and vesical catarrh.