Both terpinene isomers, alpha- and gamma-terpinene, are monoterpene hydrocarbons.
soluble in ethanol, virtually insoluble in water
alpha-terpinene is found in larger quantities in the oil of the tea tree as well as in the oils of oranges, bergamot, mandarin, nutmeg, oregano, cardamom, and coriander.
This terpene has anti-inflammatory, antifungal, antimicrobial, expectorant, bronchodilator, and general healing properties.
anti-inflammatory antimicrobial antimycotic