top note citrus

Limonene

Also known as: D-Limonene, Dipentene, Orange terpene, p-Mentha-1,8-diene, 4-Isopropenyl-1-methylcyclohexene

Fresh, citrus, orange-like, bright, uplifting, zesty

IFRA Restriction

This is the maximum allowed percentage of this material in the total finished product, not in the fragrance concentrate.

For example, if a fine fragrance (Category 4A) contains 20% fragrance oil, and IFRA allows 10% of this material, the material can be up to 50% of the fragrance concentrate (10% ÷ 20% = 50%).

EU Allergen

This ingredient is classified as an EU allergen under the Cosmetics Regulation (EC) No 1223/2009.

Labeling thresholds:

  • 0.001% in leave-on products
  • 0.01% in rinse-off products
Learn more →
CAS 5989-27-5
Manufacturers Florida Chemical, Symrise, Various citrus processors

About Limonene

The major component of citrus peel oils. Fresh, bright, and uplifting with excellent top note performance. Used extensively in both fine fragrance and functional products.

Molecular Information
Molecular Formula C10H16
Molecular Weight 136.23 g/mol
Boiling Point 348 to 349 °F at 760 mmHg (NTP, 1992)
Flash Point 119 °F (NTP, 1992)
Density 0.8411 at 68 °F (NTP, 1992) - Less dense than water; will float
Vapor Pressure 1 mmHg at 57 °F ; 5 mmHg at 104.7 °F; 10 mmHg at 128.8 °F (NTP, 1992)
InChIKey XMGQYMWWDOXHJM-JTQLQIEISA-N
Sources: PubChem

Safety Information
Danger

GHS Classification

Aspiration hazardFlammable liquidsHazardous to the aquatic environment, acute hazardHazardous to the aquatic environment, long-term hazardSensitization, SkinSkin corrosion/irritation

Hazard Statements

  • H226: Flammable liquid and vapor
  • H304: May be fatal if swallowed and enters airways
  • H315: Causes skin irritation
  • H317: May cause an allergic skin reaction
  • H400: Very toxic to aquatic life
  • H412: Harmful to aquatic life with long lasting effects
Sources: PubChem (EU Harmonized Classification)