Moderate Cosmetic Ingredient

Decahydro-beta-Naphthol

INCI: DECAHYDRO-BETA-NAPHTHOL

CAS Number
825-51-4 (trans-2-decalol / trans-decahydro-2-naphthol)
Function
Fragrance
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status prohibited
🇺🇸 US Status permitted
US Notes Allowed - no specific prohibition; permitted under IFRA guidelines with use-level restrictions

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Potential skin sensitization; structurally related decahydronaphthalenols have documented depigmenting activity - formulators should verify the specific isomer. Bicyclic saturated alcohol (decalin ring system); provides a mild, clean, slightly camphoraceous note in fragrance compositions; the trans-isomer is the more commercially relevant form

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Concern Level: Moderate

Regulatory Flags

potential-allergen fragrance-component

Frequently Asked Questions

Is Decahydro-beta-Naphthol safe in cosmetics?

Potential skin sensitization; structurally related decahydronaphthalenols have documented depigmenting activity - formulators should verify the specific isomer. Bicyclic saturated alcohol (decalin ring system); provides a mild, clean, slightly camphoraceous note in fragrance compositions; the trans-isomer is the more commercially relevant form The EU classifies Decahydro-beta-Naphthol as "prohibited". Safety rating: MODERATE.

Is Decahydro-beta-Naphthol allowed in the EU?

Decahydro-beta-Naphthol EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Decahydro-beta-Naphthol do in cosmetics?

Decahydro-beta-Naphthol functions as: Fragrance. It is classified as a cosmetic ingredient in our database. CAS number: 825-51-4 (trans-2-decalol / trans-decahydro-2-naphthol).

What is the Margin of Safety for Decahydro-beta-Naphthol?

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

Compliance Tools

Check Decahydro-beta-Naphthol compliance across multiple jurisdictions:

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Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
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Substance Compliance
Check compliance across 55 jurisdictions
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
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Heavy Metal Limits
Compare limits across jurisdictions

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