2-decalinol

2-Decalinol is a bicyclic alcohol with molecular formula C₁₀H₁₈O, characterized by a floral-rose aroma with subtle minty and muguet (lily of the valley) notes. It is a colorless to pale liquid widely applied in the fragrance industry due to its clean, sweet scent profile. Known also under several synonyms such as decahydronaphthalen-2-ol and bicyclo[4.4.0]decan-3-ol, this compound falls within the class of saturated naphthol derivatives. It can be sourced synthetically via hydrogenation and hydroxylation of related naphthalene structures. Detailed chemical and spectral data are indexed under PubChem (CID 13216) for reference. Its use is primarily linked to perfuming products, where its specific odor properties contribute to various fragrance accords.

2-Decalinol is typically not found in nature but is synthetically produced for fragrance applications. It is valued for imparting floral and woody notes complemented by a camphoraceous undertone, making it useful in perfume creations featuring rose, jasmine, lily, and oriental accords. This alcohol blends well with other fragrance ingredients, including cyclohexyl derivatives and lonones. Regulatory guidance by IFRA (Global) permits usage of 2-decalinol up to 5% concentration in fragrance concentrates, reflecting its established role as a perfuming agent across cosmetic and personal care formulations. Additionally, it is employed in diffusion systems to enhance scent delivery.

2-Decalinol exhibits a moderately low volatility, with a vapor pressure of around 0.041 mmHg at 25 °C, supporting its persistence in fragrance formulations. Its specific gravity is close to water at 0.996 measured at 25 °C, indicating comparable density. The compound's estimated logP value near 2.9 suggests moderate lipophilicity, which influences solubility and skin absorption behavior. Its flash point is approximately 212 °F (about 100 °C), indicating moderate flammability. It is soluble in alcohol and slightly soluble in water (approximately 1263 mg/L at 25 °C). These properties facilitate formulation in alcoholic fragrance bases and require consideration during handling and storage to maintain product stability.

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Safety information

Preferred SDS: View
European information :
Most important hazard(s):
Xi - Irritant
R 36/37/38 - Irritating to eyes, respiratory system, and skin. S 02 - Keep out of the reach of children. S 24/25 - Avoid contact with skin and eyes. S 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S 36 - Wear suitable protective clothing.
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
oral-rat LD50 > 5000 mg/kg Food and Cosmetics Toxicology. Vol. 12, Pg. 873, 1974.
Dermal Toxicity:
skin-rabbit LD50 > 5000 mg/kg Food and Cosmetics Toxicology. Vol. 12, Pg. 873, 1974.
Inhalation Toxicity:
Not determined

Safety in use information

Category:
fragrance agents
RIFM Fragrance Material Safety Assessment: Search
IFRA Code of Practice Notification of the 49th Amendment to the IFRA Code of Practice
Recommendation for 2-decalinol usage levels up to:
	5.0000 % in the fragrance concentrate.
Recommendation for 2-decalinol flavor usage levels up to:
	not for flavor use.

Safety references

EPI System: View

AIDS Citations:Search

Cancer Citations:Search

Toxicology Citations:Search

EPA Substance Registry Services (TSCA):825-51-4

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

Laboratory Chemical Safety Summary :13216

National Institute of Allergy and Infectious Diseases:Data

WGK Germany:2

1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-ol

Chemidplus:0000825514

RTECS:QK4240000 for cas# 825-51-4

(2R,4aS,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-ol

(2R,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-ol

(2S,4aS,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-ol

(2S,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydronaphthalen-2-ol