In short
Violettyne is Firmenich's violet-leaf molecule, a fruity-green note likened to methyl octine and methyl heptine carbonate. Firmenich supplies it as a 10% solution.
What Violettyne smells like
Firmenich describes Violettyne as a nice fruity-green, strongly violet-leaf note reminiscent of methyl octine and methyl heptine carbonate, with a galbanum undertone, and as a very stable and powerful green violet-leaf note with a unique cucumber or bell-pepper aspect. The Good Scents Company, smelling it at 1%, lists green, violet leaf, floral, violet, greasy and tropical fruity; Ventos gives fruity-green, violet and galbanum.
- Leading note
- Violet leaf
- Clear facets
- Fruity
- Supporting facets
- Galbanum, cucumber
- Faint facets
- Greasy
- Character
- Powerful, stable
What makes Violettyne distinctive
A violet-leaf green that keeps its fruitiness and stays stable where the carbonates do not.
Concentration and dilution
Firmenich supplies Violettyne as Violettyne 10 MIP, a 10% solution in isopropyl myristate.
How Violettyne is used
Used for violet-leaf greenness, and in place of methyl octine or methyl heptine carbonate as a stable green note.
Typical role: modifier (used in small amounts to change the character of a blend).
How Violettyne differs from similar materials
- Methyl Octine Carbonate
- Firmenich likens Violettyne to methyl octine carbonate and offers it as a stable replacement: fruity-green violet leaf with a galbanum undertone and a cucumber aspect. (compared directly by a cited source)
An asterisk marks a difference that a cited source states directly. The others compare the published descriptions of each material. Smell varies with grade, supplier and dilution; compare them side by side on blotters before substituting one for another.
Formulation considerations
Firmenich sells it as Violettyne 10 MIP, a 10% solution in isopropyl myristate; no neat product was found. A formula line naming only Violettyne does not say which strength was weighed.
Identity and classification
- Type
- Aroma chemical
- Origin
- Synthetic
- Odour family
- Green / Floral
- Note position
- Top note
- Physical form at room temperature
- Liquid
- Also known as
- Violet dienyne, 1,3-Undecadien-5-yne
- CAS number
- 166432-52-6
- Molecular formula
- C11H16
- Molecular weight
- 148.24 g/mol
- IUPAC name
- (3E)-undeca-1,3-dien-5-yne
The CAS number, formula and molecular weight are taken from PubChem compound 6433089, whose own record lists this CAS number; checked 25 October 2026.
Safety and compliance
Hazard classification of the neat substance, as PubChem summarises it, read 26 October 2026. Companies notifying the ECHA C&L Inventory classify it (127 reports): H317 may cause an allergic skin reaction (100% of reports); H315 causes skin irritation (27.6% of reports); H413 may cause long lasting harmful effects to aquatic life (27.6% of reports). A skin sensitiser classification concerns handling the neat material and the dose in a finished product; the IFRA Standards, where they apply, set the limits. Unless it is harmonised, this is the notifiers' own classification, not a binding one.
This page is general information, not a safety assessment or a specification. Confirm identity, composition, IFRA status and allergen content from your supplier's documents for the lot you hold.
Materials it works with
-
Violet Leaf Absolute
Absolute · Green / Aquatic — green, leafy, cucumber, watery
-
Methyl Octine Carbonate
Aroma chemical · Green / Aquatic — violet leaf, green, cucumber, fatty
-
beta-Ionone
Aroma chemical · Powdery / Woody — violet, woody, fruity, raspberry
Used in formulas and accords
Used in 1 published formula
Violettyne is an ingredient in 1 accord in the Formula & Accord Library.
Further reading
Questions about Violettyne
Is Violettyne natural or synthetic?
Violettyne is synthetic — it is made by chemical synthesis.
What is the CAS number of Violettyne?
166432-52-6. It was checked against PubChem on 25 October 2026.
Which published formulas use Violettyne?
Violettyne is used in 1 published formula in the RUŌOD Lab Formula & Accord Library: Gasoline Accord. Each is listed with a link under "Used in formulas and accords" on this page.
Sources
- PubChem — compound 6433089, checked 25 October 2026.
- PubChem — GHS classification (the ECHA C&L Inventory notifications and any harmonised EU entry), read 26 October 2026.
- dsm-firmenich — Violettyne 10 MIP — manufacturer's description.
- The Good Scents Company — violet dienyne (Violettyne MIP) — odour database.
- Olfactory profile: the RUŌOD Lab team's synthesis of the published descriptions above, reviewed 25 October 2026. Evidence: more than one published description. Classification and the short description: revision 1. Descriptions of odour are judgement, not measurement.