Alpha-Ionol
Description
Alpha-Ionol (CAS 25312-34-9), also known by its FEMA 3624 designation, is a violet-woody aroma chemical used in flavor and fragrance manufacturing. It delivers a characteristic floral-ionone character that perfumers and flavorists rely on to build depth in finished compositions.
In fine fragrance and personal care, Alpha-Ionol contributes violet, orris, and woody facets to eau de parfum, body lotions, and hair care products. Flavorists incorporate it into berry, grape, raspberry, and tea flavor systems where a soft floral-woody background note is required.
It is also used in functional fragrance applications such as fabric softeners and household cleaners, where its tenacity on substrates supports long-lasting scent performance. Food-grade use is permitted under FEMA GRAS status, allowing application in baked goods and beverages.
This chemical is also utilized in confectionery at regulated levels to ensure safety and consistency. Alpha-Ionol is supplied as a liquid, typically at high purity levels suited to flavor and fragrance production for industrial use.
Both food-grade and cosmetic-grade material is available, with buyers referencing FEMA 3624 compliance for food applications. Packaging ranges from small drums to bulk quantities depending on production volume requirements.
The material meets rigorous industry benchmarks for stability and olfactory profile. Manufacturers ensure that each batch aligns with global safety regulations and specific customer specifications for high-end aromatic formulations.
Physical Properties
| Boiling Point | 127.5-128 °C @ Press: 15 Torr |
| Density | 0.9192 g/cm³ @ Temp: 18 °C |
| Flash Point | 93.4 °C |
| Color | Colourless |
| Odor | at 100.00 %. ionone tropical sweet floral violet woody |
| Form | Oil |
| Refractive Index | n 20/D 1.491 |
| Log P | 4.31 |
Trade & Regulatory
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 2 |
Documentation
Other Names
α-ionol|Ionol 99|(E)-4-(2,6,6-trimethylcyclohex-2-en-1-yl)but-3-en-2-ol
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