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delta-Decalactone

6-pentyloxan-2-one

5-Decanolide

Lactone (delta) · delta-Lactone · C₁₀H₁₈O₂

Chemical structure of delta-Decalactone
2D structure PubChem / NCI CIR

Chemical info

CAS number CAS
705-86-2
Molecular formula
C₁₀H₁₈O₂
Molecular weight
170.25 g/mol
Origin
Nature-identical
Odor family
Gourmand
Note
Heart
Aroma
Cream, butter, coconut and milk; soft and fatty.

History

delta-decalactone is a six-membered ring lactone found in milk, butter and coconut. It is less fruity than the gamma form.

In perfumery

Used for milky, creamy effects in gourmand, coconut and tropical floral fragrances.

Connections

EvokesCream, Coconut
Found in natureCoconut, Butter

Regulatory status

No specific limit
IFRA 51
No dedicated IFRA Standard in the IFRA library as of Amendment 51.
EU CosReg
No specific entry in Annex II or III of Regulation (EC) 1223/2009.
EU allergen 2023/1545
Not on the list of fragrance allergens requiring labelling, including after Regulation (EU) 2023/1545.

Sources

  1. NCI/CADD Chemical Identifier Resolver, CAS 705-86-2
  2. IFRA Standards Library, Amendments up to 51
  3. Regulation (EC) No 1223/2009, consolidated text of 18.05.2026, Annexes II and III