About this material
Patchone is a crystallised flaky solid.
It is a synthetic fragrance ingredient widely used in perfumery for its distinctive woody, camphoraceous, and patchouli-like aroma.
Patchone imparts a woody, pine-like, balsamic scent with camphoraceous and minty nuances and is often utilised to enhance coniferous, patchouli, rose, violet, and tea accords.
It is also employed to dry down certain floral notes and is found in spring flower and citrus-grapefruit compositions.
This compound is not found in nature and is produced synthetically.
Scent character
Highlights from the material’s listed odour profile.
Note position
Heart note
Material character
A closer lookOdour strength
Listed qualitative strength
Tenacity / substantivity
Not listed
Fragrance development
Heart note
Illustrative note development · no measured evaporation data
Molecular identity
C10H20O
CAS-linked compound reference — 4-tert-Butylcyclohexanol
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
- 156.26 g/mol
- Reference IUPAC name
- 4-tert-butylcyclohexan-1-ol
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)
- 3
- Exact mass (Da)
- 156.151415257
- Monoisotopic mass (Da)
- 156.151415257
- Topological polar surface area (Ų)
- 20.2
- Complexity
- 115
- Formal charge
- 0
- Hydrogen bond donors
- 1
- Hydrogen bond acceptors
- 1
- Rotatable bonds
- 1
- Heavy atoms
- 11
- Isotope atoms
- 0
- Atom stereocentres
- 0
- Bond stereocentres
- 0
- Covalent units
- 1
- SMILES
- CC(C)(C)C1CCC(CC1)O
- InChI
- InChI=1S/C10H20O/c1-10(2,3)8-4-6-9(11)7-5-8/h8-9,11H,4-7H2,1-3H3
- InChIKey
- CCOQPGVQAWPUPE-UHFFFAOYSA-N
Reference data checked 2026-10-27.
CAS 98-52-2 · 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 | 98-52-2 |
|---|---|
| Odour description (decreasing) | Woody, Musty, Patchouli, Camphoreous, Minty, Leathery |
| Odour strength | Medium |
| Perfumery use | Effective from the smallest traces, through to 10%Listed perfumery guidance; this is not an IFRA limit. |
| Solvent | None |
| Physical state | Solid |
| Synonyms | Butylcyclohexanol, 4-Tert |
| Recorded name / preparation | 4-tert-Butylcyclohexanol |
Safety & handling
Hazard statements:
- H319 Causes serious eye irritation.
Precautionary statements:
- P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
- P301+P310 IF SWALLOWED: Immediately call a POISON CENTER/ doctor.
- P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P337+P313 If eye irritation persists: Get medical advice/attention.
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.Woods in daylight
With bergamot and a crisp citrus openingExplore a spare wood structure with citrus providing the opening contrast. Compare a brighter version with the wood reference and follow how the outline changes, keeping the later impression as important as the first moment.
A softer grain
With sandalwood and a musk directionSet the woody material beside a softer wood reference, then compare a restrained musk variation. Decide whether your concept needs creamy texture, dry definition or more space between its parts before expanding the accord.
Petals on timber
With rose and a clear floral accordTry a flower-and-wood study in which both subjects remain recognisable. Compare the floral reference with the woody variation through the evaluation, noting whether the wood forms a useful backdrop or becomes the centre of the idea.







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