Alpha Ionone Aroma Chemical
CAS# 127-41-3
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Alpha Ionone (CAS# 127-41-3) is a synthetic aroma chemical from the ionone family, renowned for its characteristic violet–orris floral note. Its scent profile combines soft violet petals, powdery orris, a hint of dry tea, light fruity nuances, and a gentle woody warmth. The overall effect is elegant and refined, with a classic floral character that still feels contemporary and versatile.
In perfumery, Alpha Ionone is used to build or reinforce violet and orris themes, as well as to modernize rose accords and other floral hearts. At low dosages, it softens sharp floral notes and creates a smooth bridge between citrus, floral, and woody components. At higher levels, Alpha Ionone can become a clearly defined violet–orris facet, ideal for floral, floral-powdery, chypre, and certain modern woody compositions.
Thanks to its good substantivity on skin and various bases, Alpha Ionone is widely used not only in fine fragrances but also in fragranced personal care, cosmetic products, soaps, detergents, and home care formulations. Its powdery violet character conveys a sense of cleanliness, grooming, and subtle romanticism, adding perceived quality and sophistication to the finished product.
With its distinctive yet flexible profile, Alpha Ionone is considered a near “must-have” in the perfumer’s palette, especially when working on violet, orris, modern rose structures, or whenever a refined, powdery floral touch is needed to complete and polish a fragrance.
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Technical standards
Technical standards

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CAS NO.
127-41-3
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OLFACTIVE FAMILY
Floral
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BRAND
Scent.vn
Olfactory Pyramid
Notes
| Floral |
| Woody |
| Sweet |
| Violet |
| Fruity |
| Maximum acceptable concentrations in the finished product (%) | |||
|---|---|---|---|
|
Category 1
Products applied to the lips
|
No restriction |
Category 7A
Rinse-off products applied to the hair with some hand contact
|
No restriction |
|
Category 2
Products applied to the axillae
|
No restriction |
Category 7B
Leave-on products applied to the hair with some hand contact
|
No restriction |
|
Category 3
Products applied to the face/body using fingertips
|
No restriction |
Category 8
Products with significant anogenital exposure
|
No restriction |
|
Category 4
Products related to fine fragrance
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No restriction |
Category 9
Products with body and hand exposure, primarily rinse off
|
No restriction |
|
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
|
No restriction |
Category 10A
Household care products with mostly hand contact
|
No restriction |
|
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
|
No restriction |
Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
|
No restriction |
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Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
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No restriction |
Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
|
No restriction |
|
Category 5D
Baby Creams, baby Oils and baby talc
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No restriction |
Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
|
No restriction |
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Category 6
Products with oral and lip exposure
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No restriction |
Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
|
No restriction |
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Certificates of Quality
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Certificate of Analysis (COA)
Provides information on the physical and chemical properties of the product.Download -
IFRA Certificate of Conformity
Sets safety standards and guidelines for the product in manufacturing.Download -
Safety Data Sheet (SDS)
Provides important safety guidelines for transporting, storing, and using the product.Download