Cas No: 5989-27-5  (R)           
EINESC No: 100-028-848
Molecular weight: 136.238 g/mol  

Chemical Formula: C10H16
Chemical Structure:

Physical Properties

General Properties: colorless liquid

Odor: orange-like

Intensity: 0,8411 g/cm3 

Boiling point: 176 °C

Melting point: -74,35 °C

Flash point: 50 ° C

Vapor pressure: 0,19 kPa (20 °C)

Refraction index: 1.4727 nD

Solubility (aqueous) indissoluble


General Properties

Limonene is an aliphatic hydrocarbon that has pale, luminous color. It has two isomers; D and L as it is a chiral molecule. D-Limonene has a orange-like odor and it is found abundantly in nature. L-Limonene has a terpene-like odor and it is found in cones of certain trees.


Limonene is industrially produced by removal or vaporized distillation of centrifuged citruses.


D limonene is preferred to be used as odor compound in cosmetic products. It is also a botanical pesticide. It is used for extending shelf life of many products.

It is a frequently used, non-toxic chemical that works as oil remover for metals. Certain dye removers also contain d limonene.

Safety Measures and Toxic Values

D limonene has low toxicity unless it is used in high doses. In low concentrations, it is not dangerous to orally consume but it is irritant for eyes and skin. If it is consistently inhaled, it may damage lungs and even cause fatal lung problems. It is also extremely toxic for aquatic life.

It is also extremely flammable and it may cause fire or explosions in high concentrations. Therefore, it must be stored in tightly closed containers.