Tag Archives: dipentene

l-Limonene (CAS 5989-54-8)

l-Limonene is the optical isomer of Limonene. It is classified as three types: l-Limonene, d-Limonene optical isomers and one racemic.

It is a colorless to pale yellow liquid with strong fruity and citrus odor.

d-Limonene is naturally found in Pine needle oil, Turpentine, Cajeput oil and other essential oils. l-Limonene presents in essential oil of citrus, such as mandarin oil and sweet orange oil.

Racemic limonene is derived from turpentine. It mainly used in food flavour and synthetic fragrances.

Beta Phellandrene

α-Phellandrene and β-phellandrene are cyclic monoterpenes and are double-bond isomers. In α-phellandrene, both double bonds are endocyclic and in β-phellandrene, one of them is exocyclic. Both are insoluble in water, but miscible with ether. Beta-Phellandrene is widely distributed in essential oils (Angelica, Eucalyptus, Lavandula, Mentha, Pinus species).

The phellandrenes are used in fragrances because of their pleasing aromas. The odor of β-phellandrene has been described as peppery-minty and slightly citrusy. Consequently, beta-Phellandrene is widely used in flavor industry.