Ionone
[CAS# 8013-90-9]

Identification

• Classification: Organic raw materials >> Ketone compound
• Name: Ionone
• Synonyms: 4-(2,6,6-Trimethyl-2(1)-cyclohexen-1-yl)-3-buten-2-one
• Molecular Formula: C₁₃H₂₀O
• Molecular Weight: 192.30
• CAS Registry Number: 8013-90-9
• EC Number: 232-396-8
• FEMA: 2595
• SMILES: CC1=C(C(CCC1)(C)C)C=CC(=O)C

Properties

• Density: 0.93 g/mL (20 °C)
• Boiling point: 239 °C
• Refractive index: 1.517-1.522

Safety Data

• Hazard Symbols: GHS07;GHS08;GHS09 Danger
• Risk Statements: H302-H350-H411
• Safety Statements: P201-P273-P301+P312+P330-P308+P313-P391-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Chronic hazardous to the aquatic environment	Aquatic Chronic	2	H411
Eye irritation	Eye Irrit.	2	H319
Skin irritation	Skin Irrit.	2	H315

• Transport Information: UN 3082

Discovery and Applications

Ionones are fascinating compounds prized for their elegant floral scent. The discovery of ionones dates back to the early 20th century, when chemists identified it as the compound responsible for the characteristic aroma of violets. Ionones occur naturally in various plants, such as violets, raspberries and roses, and are classified as cyclic terpene ketones. Their chemical structure and aromatic profile differ slightly between α-ionone and β-ionone, each bringing a different nuance to perfume.

With a ring structure and a ketone group, ionones have a powdery, floral scent reminiscent of fresh flowers. This scent profile makes ionones a valuable ingredient in perfumes, where they can be used as a versatile base and fixative. They are able to enhance and stabilize scents, ensuring the longevity and depth of perfume ingredients, blending beautifully with other floral, woody or fruity notes.

In perfumery, ionones are renowned for their role in creating sophisticated and timeless fragrances. They add a touch of elegance and sophistication to perfumes, colognes and body care products, catering to the preferences of different consumers. Ionone�s subtle violet-like aroma is also used in cosmetics, helping to enhance the sensory experience of skincare, haircare and cosmetic formulations. Its inclusion enhances the appeal of products while exuding natural elegance.

In addition to perfumes and cosmetics, ionone is used as a flavoring agent in the food industry. Its fruity and floral notes enrich confectionery, beverages and gourmet products, exuding a subtle sweetness reminiscent of fresh berries and flowers. Ionone�s natural origin and pleasant taste make it a top choice for enhancing culinary creativity, ranging from desserts to fine cuisine.

The versatility of ionone extends to industrial applications, where it is a key ingredient in air fresheners, detergents and household cleaners, masking unpleasant odors and providing a pleasant fragrance, enhancing product appeal and consumer experience. The inclusion of ionone in these products highlights its practical utility beyond its traditional uses, creating a sense of cleanliness and freshness in everyday environments. The transformative power of everyday life.

References

2023. Uncovering the effect of Moringa oleifera Lam. leaf addition to Fuzhuan Brick Tea on sensory properties, volatile profiles and anti-obesity activity. Food & Function, 14(5).
DOI: 10.1039/D2FO03531F

2021. Chemical characterization of Wuyi rock tea with different roasting degrees and their discrimination based on volatile profiles. RSC Advances, 11(20).
DOI: 10.1039/D0RA09703A

2016. Mechanism and kinetic properties for the gas-phase ozonolysis of β-ionone. RSC Advances, 6(115).
DOI: 10.1039/c6ra24182e