Good Cosmetic Ingredient NOAEL Data Sensitization Data

Dihydrocoumarin

INCI: DIHYDROCOUMARIN

CAS Number
119-84-6
Function
Fragrance ingredient with sweet, coumarin-like odor
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted with no specific CFR restriction

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

10 study endpoints found for Dihydrocoumarin. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 110 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 1000 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 150 mg/kg bw/day oral dog Chronic COSMOS_DB
NOAEL 580 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 1500 mg/kg bw/day oral rat Short Term Toxicity COSMOS_DB
NOAEL 2250 mg/kg bw/day oral mouse Short Term Toxicity COSMOS_DB
NOAEL 800 mg/kg bw/day oral mouse Subchronic COSMOS_DB
NOAEL 150 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 150 mg/kg bw/day oral rat Carcinogenicity COSMOS_DB
NOAEL 200 mg/kg bw/day oral mouse Carcinogenicity COSMOS_DB

Sensitization Profile

Contact sensitization data for Dihydrocoumarin based on clinical patch test studies and IFRA standards.

Sensitization Rate
low
Allergen Class
fragrance
EU Allergen Listed
yes
Patch Test Positive Rate
0.2%
Cross-reactivity Group
none
Reaction Type
contact-dermatitis
IFRA Restricted

Source: EU 2023/1545; SCCS

Expert Verdict

Structurally similar to coumarin (Annex III allergen); Cramer Class III material with exposure levels below TTC (0.47 mg/day). Monitor for future regulatory reclassification.

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Concern Level: Low

Regulatory Flags

potential-allergen fragrance-component eu_banned_cosmetics ifra_fragrance fda_food_additive eu_cosing_listed jecfa_safe

Frequently Asked Questions

Is Dihydrocoumarin safe in cosmetics?

Structurally similar to coumarin (Annex III allergen); Cramer Class III material with exposure levels below TTC (0.47 mg/day). Monitor for future regulatory reclassification. The EU classifies Dihydrocoumarin as "permitted". Safety rating: GOOD. 10 toxicological study endpoint(s) are available in our database.

Is Dihydrocoumarin allowed in the EU?

Dihydrocoumarin EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Dihydrocoumarin do in cosmetics?

Dihydrocoumarin functions as: Fragrance ingredient with sweet, coumarin-like odor. It is classified as a cosmetic ingredient in our database. CAS number: 119-84-6.

What is the Margin of Safety for Dihydrocoumarin?

adequate 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.

What is the NOAEL for Dihydrocoumarin?

The NOAEL (No Observed Adverse Effect Level) for Dihydrocoumarin is 110 mg/kg bw/day based on a Subchronic study via oral route in rat. A total of 10 study endpoints are available. Source: COSMOS_DB.

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