About this material
Aldehyde C12 MNA is a very intense material with good tenacity. Different to the other aldehydes except in power.
An absolute classic aliphatic aldehyde with nuances of incense and ambergris. Sweaty and metallic in concentration but floral and herbaceous qualities come to life with appropriate dilution.
Widely used in all areas of perfumery but blends very well with woody, amber, floral and tobacco accords.
Good fabric substantivity.
Scent character
Highlights from the material’s listed odour profile.
Note position
Top note
Material character
A closer lookOdour strength
(recommend smelling in a 1.00 % solution or less)
Listed qualitative strength
Tenacity / substantivity
388 hour(s)
at 100%
Listed reference conditions
Fragrance development
Top note
Illustrative note development · no measured evaporation data
Molecular identity
C12H24O
CAS-linked compound reference — 2-Methylundecanal
This compound record is linked to the explicitly recorded CAS number. It is not supplier confirmation of the supplied grade, purity, stereochemistry, isomer proportions or complete composition.
- Reference molecular weight
- 184.32 g/mol
- Reference IUPAC name
- 2-methylundecanal
More compound properties
Computed and structural reference properties for the named compound. These are not measured supplier specifications or properties of a complete dilution, mixture or batch.
- XLogP (computed)
- 4.9
- Exact mass (Da)
- 184.182715385
- Monoisotopic mass (Da)
- 184.182715385
- Topological polar surface area (Ų)
- 17.1
- Complexity
- 110
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 9
- Heavy atoms
- 13
- Isotope atoms
- 0
- Atom stereocentres
- 1
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CCCCCCCCCC(C)C=O
- InChI
- InChI=1S/C12H24O/c1-3-4-5-6-7-8-9-10-12(2)11-13/h11-12H,3-10H2,1-2H3
- InChIKey
- NFAVNWJJYQAGNB-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 110-41-8 · reference checked 2026-10-27.
Fragrance allergen reference
Generic regulatory reference only. This is not a supplier allergen declaration, measured composition, allergen-free claim or finished-product labelling assessment.
Raw-material reference based on recorded CAS numbers. A CAS match identifies a reference entry; it does not verify the supplied grade, composition, purity or finished-product compliance. Naturals, bases and mixtures require composition review.
European Union / Northern Ireland
No direct listed-entry CAS match in this jurisdiction’s held reference set. This does not mean the material is allergen-free. Constituents, grouped entries and natural-material composition may require further review.
Finished-cosmetic declaration thresholds: greater than 0.001% leave-on; greater than 0.01% rinse-off. Apply the current target-market rules to the actual complete formulation; no concentration is inferred here.
Commission Regulation (EU) 2023/1545 · Regulation (EU) 2023/1545 with 11 November 2025 corrigendum; checked 2026-10-26.
Held EU transition dates: placing noncompliant products on the market until 2026-07-31; making them available until 2028-07-31. Check applicability and current law for the intended market. 2025 corrigendum.
Great Britain
No direct listed-entry CAS match in this jurisdiction’s held reference set. This does not mean the material is allergen-free. Constituents, grouped entries and natural-material composition may require further review.
Finished-cosmetic declaration thresholds: greater than 0.001% leave-on; greater than 0.01% rinse-off. Apply the current target-market rules to the actual complete formulation; no concentration is inferred here.
Regulation (EC) No 1223/2009, Annex III (Great Britain) · legislation.gov.uk current text checked 2026-10-26.
Current supplier composition or allergen declarations are required to assess naturals, bases, mixtures and actual concentrations. Reference data checked 2026-10-26; bundle 2026-10-27. Supplementary private documents remain separate.
Product specification
| CAS number | 110-41-8 |
|---|---|
| Odour description (decreasing) | Aldehydic, Dry, Amber, Warm |
| Odour strength | High (recommend smelling in a 1.00 % solution or less) |
| Perfumery use | Effective from the smallest traces, through to 2%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 388 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid |
| Synonyms | 2-Methyl Undecanal |
Additional listed details
Odour Description at 1.00 % in DPG: Fresh, Amber, Aldehydic, Moss, Sweaty Musk, Citrus, Tuberose, Metallic, Waxy, Coumarinic
Safety & handling
Hazard statements:
- H315 Causes skin irritation.
- H317 May cause an allergic skin reaction.
- H410 Very toxic to aquatic life with long lasting effects.
Precautionary statements:
- P261 Avoid breathing vapour or dust.
- P264 Wash hands and other contacted skin thoroughly after handling.
- P272 Contaminated work clothing should not be allowed out of the workplace.
- P273 Avoid release to the environment.
- P280 Wear protective gloves/eye protection/face protection.
- P302/352 IF ON SKIN: Wash with plenty of soap and water.
- P333/313 If skin irritation or rash occurs: Get medical advice/attention.
- P362 Take off contaminated clothing and wash before reuse.
- P391 Collect spillage.
- P501 Dispose of contents/container to approved disposal site, in accordance with local regulations.
Professional/Industrial use only.
Datasheets & customer documents
Available documents are attached to eligible completed orders in your account.
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Supplementary documents are supplied only where explicitly listed and available. Check documentation information
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Documentation Supply PolicyIFRA formulation guide
Generic reference only — not an IFRA certificate, compliance decision or use recommendation. The Responsible Person and qualified safety assessor must assess the actual finished formula using current applicable IFRA Standards, supplementary documentation where available and the CPSR.
Raw-material reference based on recorded CAS numbers. A CAS match identifies a reference entry; it does not verify the supplied grade, composition, purity or finished-product compliance. Naturals, bases and mixtures require composition review.
Source: 51st Amendment overview, held source checked 2026-10-21. Bundle 2026-10-27. Individual Standards prevail over the overview.
No direct IFRA overview entry matched the recorded CAS in this held dataset. This does not mean unrestricted use, absence of relevant Standards or compliance. Constituent restrictions may still apply.
IFRA source overview · Individual IFRA Standards and supplementary documentation
Supplier certificates and private documents are separate evidence. Their availability does not determine whether this generic guide is shown. This is a dated local reference, not a live regulatory feed.
Creative ideas to explore
Creative directions, not tested formulas.Polished petals
With rose and soft floral notesExplore an aldehydic floral silhouette around a simple rose accord. Compare the opening and later impression with an unchanged floral reference; decide whether the effect feels airy, waxy or abstract before adding further complexity.
Citrus in white
With bergamot and a musk directionBuild a study around citrus brightness and a restrained musk backdrop. Let the aldehydic material be the changing variable, then note whether it supports the peel impression or takes the sketch towards a more abstract clean accord.
A softer frame
With sandalwood and powdery notesSet the listed aldehydic character against a soft wood or powder direction. Compare the balance through the evaluation rather than judging only the first impression, and keep any successful version simple enough to understand what changed.








Jayesh H. (verified owner) –
Will be using this today and off the bottle its seems very powerful.