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Beta-Ionone

AROMA CHEMICALS  /  floral · violet · woody
Beta-Ionone
Beta-Ionone perfume ingredient
CategoryAROMA CHEMICALS
Subcategoryfloral · violet · woody
Origin
VolatilityHeart Note
BotanicalN/A - synthetic (naturally found in Boronia megastigma, Rosa spp.)
AppearancePale yellow clear liquid
Odor Strengthmedium ,recommend smelling in a 10.00 % solution or less
Producing CountriesChina, Germany, India
PyramidHeart

Warm, violet-woody, sweet. Beta-ionone (CAS 14901-07-6) is the principal violet-flower molecule: the warm, powdery sweetness that defines violet and orris.

  1. Scent
  2. The Full Story
  3. Fun Fact
  4. Extraction & Chemistry
  5. In Perfumery

Scent

Warm, sweet, violet-woody. The defining violet molecule. More woody than alpha-ionone, more persistent. The molecule that makes orris root smell like violets despite being iris rhizome.

Evolution over time

Immediately

Immediately

Warm violet-sweet, powdery
After a few hours

After a few hours

Woody-violet heart, persistent
After a few days

After a few days

Long-lasting powdery-woody violet

The Full Story

Beta-ionone (CAS 14901-07-6) is a C13 norisoprenoid from carotenoid degradation. The molecule most directly responsible for classic violet-flower scent. Found in orris root, rose, violet flowers, raspberries, tomatoes, tea.

More woody and persistent than alpha-ionone. Contributes to iris and orris powdery quality.

Essential in violet reconstructions, iris accords, and powdery compositions.

Explore all seven extraits in the Discovery Set.

Related: Alpha Ionone · Alpha Isomethyl Ionone · Boisiris · Diviniris · Iris · Iris Butter · Iris Pallida · Orris Absolute

Did You Know?

Did you know?
Beta-ionone is a degradation product of beta-carotene. When carotenoids break down in autumn leaves, they produce ionones. This is why autumn leaves have a faintly sweet, violet-like smell.

Extraction & Chemistry

Extraction method: Produced synthetically or by beta-carotene degradation.

Molecular FormulaC13H20O
CAS Number14901-07-6
Botanical NameN/A - synthetic (naturally found in Boronia megastigma, Rosa spp.)
IFRA Status<= 2% Pseudoionone
SynonymsBETA-IONONE · IONONE BETA · IONONE
Physical Properties
Odor Strengthmedium ,recommend smelling in a 10.00 % solution or less
Lasting Power112 hour(s) at 100.00 %
AppearancePale yellow clear liquid
Boiling Point126.00 to  128.00 °C. @ 12.00 mm Hg
Flash Point> 200.00 °F. TCC ( > 93.33 °C. )
Specific Gravity0.93900 to 0.94700 @  25.00 °C.
Refractive Index1.51700 to 1.52200 @  20.00 °C.

In Perfumery

Heart-to-base building block. CAS 14901-07-6. The primary violet molecule. Essential in violet, iris, and orris reconstructions. More woody and persistent than alpha-ionone. Found in orris, rose, violet, raspberry, tea.

From the raw to the worn

This is what it becomes.