5,9-DIMETHYL-8-DECEN-3-OL

65

Moderate

CAS Number: 19550-54-0

About 5,9-DIMETHYL-8-DECEN-3-OL

An unsaturated secondary alcohol fragrance with a complex floral-citrus character used at low concentrations in fine fragrances.

Detailed Analysis

5,9-Dimethyl-8-decen-3-ol is a branched unsaturated C10 secondary alcohol with double bond at position 8 and methyl substituents at positions 5 and 9. The structure gives it a complex odor profile combining floral, citrus, and green notes. The secondary alcohol is less reactive than aldehydes, reducing sensitization concerns, though the unsaturation introduces stability considerations similar to other terpene alcohols. The compound has no EU restrictions and is considered safe at typical fragrance use levels.

Skin Benefits

  • ✓ Complex floral-citrus fragrance
  • ✓ Good substantivity
  • ✓ Used in fine fragrance compositions

Known Concerns

  • ⚠ Unsaturation - potential oxidation products
  • ⚠ Limited specific safety data
  • ⚠ Minor environmental concern for aquatic organisms

Safety Score

65

Moderate

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.