![Skeletal formula of Pinoacetaldehyde (6,6-Dimethylbicyclo[3.1.1]hept-2-ene-2-propanal), C12H18O, drawn from PubChem's 2D record. Stereochemistry is not shown.](/lab/materials/img/pinoacetaldehyde-512.10bbcd5221.webp)
In short
Pinoacetaldehyde is IFF's marine-pine aldehyde, a fresh, watery and ozonic note over a clean pine heart with balsamic undertones.
What Pinoacetaldehyde smells like
Fraterworks describes Pinoacetaldehyde as a bracing burst of oceanic freshness wrapped around a clean pine heart — watery and ozonic, evocative of windswept shores, anchored by soft balsamic undertones — with six hours of substantivity and strong top-note impact. The Fragrance Foundry likens it to a beta-pinene fortified with ozonic facets.
- Leading note
- Marine pine
- Clear facets
- Ozonic
- Supporting facets
- Watery
- Faint facets
- Balsamic
- Character
- Fresh, transparent
What makes Pinoacetaldehyde distinctive
Pine needles and sea air carried by one aldehyde.
How Pinoacetaldehyde is used
Used in aquatic and fougère accords, marine compositions and pine notes.
Typical role: lift (adds diffusion and radiance, especially at the top); modifier (used in small amounts to change the character of a blend).
How Pinoacetaldehyde differs from similar materials
- Ozofleur
- Ozofleur is metallic ozone with no conifer; pinoacetaldehyde adds pine needles and a balsamic side to its marine air.
Each difference compares the published descriptions of the two materials. Smell varies with grade, supplier and dilution; compare them side by side on blotters before substituting one for another.
Identity and classification
- Type
- Aroma chemical
- Origin
- Synthetic
- Odour family
- Aquatic / Woody
- Note position
- Top to heart note
- Physical form at room temperature
- Liquid
- Also known as
- 6,6-Dimethylbicyclo[3.1.1]hept-2-ene-2-propanal
- CAS number
- 33885-51-7
- Molecular formula
- C12H18O
- Molecular weight
- 178.27 g/mol
- IUPAC name
- 3-(6,6-dimethyl-2-bicyclo[3.1.1]hept-2-enyl)propanal
The CAS number, formula and molecular weight are taken from PubChem compound 118111, whose own record lists this CAS number; checked 24 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 (1,585 reports): H302 harmful if swallowed (85.4% of reports); H315 causes skin irritation (85.4% of reports); H317 may cause an allergic skin reaction (85.4% of reports); H319 causes serious eye irritation (85.4% of reports); H400 very toxic to aquatic life (84% of reports); H410 very toxic to aquatic life with long lasting effects (84% of reports). 232 of the reports find it does not meet the hazard criteria. 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
-
Calone
Aroma chemical · Aquatic / Metallic — marine, watermelon, ozonic, watery
-
Balsam Fir Needle Oil
Essential oil · Aromatic / Resinous — balsamic, fresh, piney, sweet
-
beta-Pinene
Aroma chemical · Aromatic / Woody — piney, woody, dry, green
Pinoacetaldehyde is also suggested as a partner on the pages for Red Seaweed CO2 Extract.
Used in formulas and accords
Used in 2 published formulas
Pinoacetaldehyde is an ingredient in 1 perfume formula and 1 accord in the Formula & Accord Library.
Community formulas
RUŌOD House Originals
Original compositions by RUŌOD House.
Further reading
Questions about Pinoacetaldehyde
Is Pinoacetaldehyde natural or synthetic?
Pinoacetaldehyde is synthetic — it is made by chemical synthesis.
What is the CAS number of Pinoacetaldehyde?
33885-51-7. It was checked against PubChem on 24 October 2026.
Which published formulas use Pinoacetaldehyde?
Pinoacetaldehyde is used in 2 published formulas in the RUŌOD Lab Formula & Accord Library: Cookies & Cream Accord and Harbour Rope. Each is listed with a link under "Used in formulas and accords" on this page.
Sources
- PubChem — compound 118111, checked 24 October 2026.
- PubChem — GHS classification (the ECHA C&L Inventory notifications and any harmonised EU entry), read 26 October 2026.
- Fraterworks — Pinoacetaldehyde — distributor's description.
- The Fragrance Foundry — Pino Acetaldehyde — distributor's description.
- Olfactory profile: the RUŌOD Lab team's synthesis of the published descriptions above, reviewed 26 October 2026. Evidence: more than one published description. Classification and the short description: revision 1. Descriptions of odour are judgement, not measurement.