About this material
Similar to Indole & Skatole, civet-like but more floral, earthy, animalic with leather nuances.
The perfect companion to any Jasmine formulation.
A wonderful material that has a beautiful sparkle that is missing in Indole.
Scent character
Highlights from the material’s listed odour profile.
Note position
Base note
Material character
A closer lookOdour strength
(Recommend smelling in a 1% solution or less)
Listed qualitative strength
Tenacity / substantivity
400 hour(s)
at 10%
Listed reference conditions
Supplied strength is 10% in DPG.
Fragrance development
Base note
Illustrative note development · no measured evaporation data
Molecular identity
C11H12O2
CAS-linked compound reference — 4,4a,5,9b-Tetrahydroindeno(1,2-d)-1,3-dioxin
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.
Named active material only. These properties do not describe the complete supplied dilution or carrier.
- Reference molecular weight
- 176.21 g/mol
- Reference IUPAC name
- 4,4a,5,9b-tetrahydroindeno[1,2-d][1,3]dioxine
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)
- 1.6
- Exact mass (Da)
- 176.083729621
- Monoisotopic mass (Da)
- 176.083729621
- Topological polar surface area (Ų)
- 18.5
- Complexity
- 193
- Formal charge
- 0
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 13
- Isotope atoms
- 0
- Atom stereocentres
- 2
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- C1C2COCOC2C3=CC=CC=C31
- InChI
- InChI=1S/C11H12O2/c1-2-4-10-8(3-1)5-9-6-12-7-13-11(9)10/h1-4,9,11H,5-7H2
- InChIKey
- CZSXBBWOROMVEW-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 18096-62-3 · 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 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 | 18096-62-3 |
|---|---|
| Odour description (decreasing) | Animal, Indole, Earthy, Floral, Jasmine |
| Odour strength | High (Recommend smelling in a 1% solution or less) |
| Perfumery use | Effective from the smallest traces up to 10%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 400 hour(s) at 10% |
| Solvent | DPG to give a 10% solution of Indoflor |
| Physical state | Liquid |
| Synonyms | Indolarome, 4,4a,5,9b-tetrahydroindeno[1,2-d][1,3]dioxine |
| 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. |
Additional listed details
Safety & handling
Read the full product information and Safety Information tab for the material’s listed handling information.
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 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.Garden after rain
With leafy and root-like directionsExplore an earthy garden sketch by pairing the listed character with a green leaf or root direction. Keep those two options separate at first so you can distinguish a fresh soil idea from a denser, darker one.
Roots and timber
With dry and soft wood contrastsBuild an earthy wood study around a deliberately simple wood accord. Compare a dry outline with a smoother variation, noting which makes the material’s character easier to recognise and which turns the sketch into something new.
Rose in the ground
With a familiar rose accordSet the earthy material against a clear rose reference for a flower-and-soil concept. Evaluate the contrast before adding sweetness or spice; the aim is to decide whether the earthy accent enriches your imagined scene.






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