middle note floral

alpha-Isomethyl Ionone

Also known as: 3-Methyl-4-(2,6,6-trimethyl-2-cyclohexen-1-yl)-3-buten-2-one, alpha-Methyl Ionone, Methyl Ionone Gamma™

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 127-51-5

Molecular Information
Molecular Formula C14H22O
Molecular Weight 206.32 g/mol
Boiling Point 76.00 °C. @ 0.30 mm Hg
Density 0.925-0.934
LogP 4.315
InChIKey JRJBVWJSTHECJK-PKNBQFBNSA-N
Sources: PubChem

Safety Information
Warning

GHS Classification

Hazardous to the aquatic environment, long-term hazardSensitization, SkinSerious eye damage/eye irritationSkin corrosion/irritation

Hazard Statements

  • H315: Causes skin irritation
  • H317: May cause an allergic skin reaction
  • H319: Causes serious eye irritation
  • H411: Toxic to aquatic life with long lasting effects
  • H412: Harmful to aquatic life with long lasting effects
Sources: PubChem (ECHA C&L)