About this material
Ortho Tertiary Butyl Cyclohexyl Acetate (O.T.B.C.H.A)
Intense and robust, this powerful fragrance material combines the invigorating essence of fruits and florals with a subtle woody undertone.
It’s unique potency effortlessly harmonises with floral compositions, imparting a delightful fruity tea aroma.
A sophisticated and complex odour material.
Please note: This ingredient may solidify at cooler temperatures or during storage because of its natural chemical structure. Many aroma chemicals, esters, and ketones have a melting point near or above typical room temperature, so they can crystallise or become semi-solid when stored in cooler environments. This solidification is completely normal and does not affect the quality, fragrance, or performance of the product. Gently warming the material will return it to its liquid state, ready for use.
Scent character
Highlights from the material’s listed odour profile.
Note position
Top note · Heart note
Material character
A closer lookOdour strength
Listed qualitative strength
Tenacity / substantivity
8 hour(s)
at 100%
Listed reference conditions
Fragrance development
Top note · Heart note
Illustrative note development · no measured evaporation data
Molecular identity
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 | 20298-69-5 · 88-41-5 |
|---|---|
| Odour description | Fruity, Woody, Green Apple, Herbal · Fresh, Fruity, Woody, Herbal, Camphor, Spicy |
| Odour strength | Medium |
| Perfumery use | Effective from the smallest traces, through to 15%Listed perfumery guidance; this is not an IFRA limit. |
| Substantivity | 8 hour(s) at 100% |
| Solvent | None |
| Physical state | Liquid — May crystallise or become semi-solid in cool storage; gentle warming restores the working liquid state. |
| Synonyms | [(1R,2R)-2-tert-butylcyclohexyl] acetate, Agrumex HC, Ortho Tertiary Butyl Cyclohexyl Acetate, Cis-2-Tert-Butylcyclohexyl Acetate |
Additional listed details
CAS No: 20298-69-5, 88-41-5
Safety & handling
Hazard statements:
- H411 Toxic to aquatic life with long lasting effects.
Precautionary statements:
- P273 Avoid release to the environment.
- P391 Collect spillage.
- P501 Dispose of contents and container to hazardous or special waste collection point, in accordance with local, regional, national and/or international regulation.
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.Fruit with its peel
With citrus and leafy contrastsExplore a fruit sketch that includes a suggestion of peel or leaf. Compare those accents separately against the fruity reference, noticing whether they create a fresher impression or pull the idea away from the fruit you imagined.
An orchard in bloom
With rose or another familiar flowerPlace the fruity direction beside a simple floral accord. Keep a flower-only comparison and assess whether the fruit reads as a supporting accent, a juicy centre or a separate note that needs a different setting.
Fruit and cream
With vanilla and soft wood directionsSketch a more rounded fruit idea with vanilla as one variation and soft wood as another. Compare sweetness and texture before combining both, leaving room for the original fruity character to remain identifiable in the study.







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