About this material
Tonalid
Tonalid, a widely utilised and clean musk, has proven its durability over time and remains extensively employed in modern perfumery.
Tonalid creates a highly desirable accord with Coumarin, particularly in the construction of male fougere perfumes.
Similar to Galaxolide, this powerful material is universally perceived as pleasant and detectable by most individuals. It is however worth noting that musks are typically used in combination due to the fact that some people may not be able to smell certain musks.
An exceptional fixative that maintains stability across various mediums.
It should be noted that the large crystals take a significant amount of time to dissolve, making pre-dissolved options preferable for those without automatic stirrers.
Scent character
Highlights from the material’s listed odour profile.
Note position
Base note
Material character
A closer lookOdour strength
Listed qualitative strength
Tenacity / substantivity
400 hour(s)
at 10% in DPG
Listed reference conditions
Supplied strength is 10% in DPG.
Fragrance development
Base note
Illustrative note development · no measured evaporation data
Molecular identity
C18H26O
- Molecular weight
- 258.4 g/mol
- IUPAC name
- 1-(3,5,5,6,8,8-hexamethyl-6,7-dihydronaphthalen-2-yl)ethanone
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)
- 5.3
- Exact mass (Da)
- 258.198365449
- Monoisotopic mass (Da)
- 258.198365449
- Topological polar surface area (Ų)
- 17.1
- Complexity
- 366
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 1
- Heavy atoms
- 19
- Isotope atoms
- 0
- Atom stereocentres
- 1
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC1CC(C2=C(C1(C)C)C=C(C(=C2)C(=O)C)C)(C)C
- InChI
- InChI=1S/C18H26O/c1-11-8-16-15(9-14(11)13(3)19)17(4,5)10-12(2)18(16,6)7/h8-9,12H,10H2,1-7H3
- InChIKey
- DNRJTBAOUJJKDY-UHFFFAOYSA-N
Reference data checked 2026-10-27.
Structure of the named active material; product supplied at 10% in DPG.
This molecular reference matches the catalogue’s recorded CAS and formula. It does not confirm the supplied grade, purity, stereochemistry, isomer proportions, composition, impurities or unlisted constituents.
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 undiluted material reference. These data refer to the named active material, not the complete supplied dilution. A raw-material IFRA ceiling is not a use level for this diluted product. The assessor must account for the actual concentration, carrier and all other formula contributions.
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 | 1506-02-1 |
|---|---|
| Odour description (decreasing) | Strong, Sweet, Amber, Ambrette, Fruity, Musk, Powdery |
| Odour strength | Medium |
| Perfumery use | Effective from the smallest traces, through to 10%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 400 hour(s) at 10% in DPG |
| Solvent | DPG to give a 10% solution of Tonalid |
| Physical state | Liquid |
| Synonyms | 1-(3,5,5,6,8,8-hexamethyl-6,7-dihydronaphthalen-2-yl)ethanone, Musk Tetralin, Tonalide, Tonalid Crystals |
| Named active molecular formula | C18 H26 O |
| IFRA document scope | Where an IFRA document is shared with the raw material, it refers to the raw, undiluted material. It is supplied as a reference for this diluted product; its stated limits are not limits for the supplied dilution. Check the document scope and assess the intended finished formulation. This notice does not confirm that a document is available. |
Safety & handling
Hazard statements:
- H302 Harmful if swallowed.
- H410 Very toxic to aquatic life with long lasting effects.
Precautionary statements:
- P270 Do not eat, drink or smoke when using this product.
- P273 Avoid release to the environment.
- P280 Wear protective gloves/protective clothing/eye protection/face protection.
- P301+P312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell.
- P501 Dispose of contents/container in accordance with local regulations.
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
Purchased as a guest? Follow the SDS request guidance in our Documentation Supply Policy and provide proof of purchase.
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 undiluted material reference. These data refer to the named active material, not the complete supplied dilution. A raw-material IFRA ceiling is not a use level for this diluted product. The assessor must account for the actual concentration, carrier and all other formula contributions.
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.Amber in daylight
With bergamot and dry woodsExplore a brighter amber sketch with a citrus opening and a dry wood outline. Compare a spare version with a richer one, checking whether the amber character remains legible once the opening has moved on.
Petals after dark
With rose and a restrained spice ideaPlace the amber direction around a familiar rose accord. Add the spice idea as a separate variation, then compare both against the flower alone to decide whether you prefer warmth, contrast or a clearer floral centre.
Soft resin study
With resinous and vanilla directionsSketch a rounded amber using resinous and vanilla references as separate creative options. Compare the sweetness and texture of each, then decide whether your imagined amber should suggest dry balsam, soft vanilla or a balance between them.








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