Excellent Cosmetic Ingredient NOAEL Data GHS Classified SCCS/CIR Reviewed

Diacetone Alcohol

INCI: DIACETONE ALCOHOL

CAS Number
123-42-2
Function
Fragrance ingredient, solvent
Safety Rating
EXCELLENT

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted — CIR Expert Panel concluded safe in present practices of use and concentration

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

2 study endpoints found for Diacetone Alcohol. 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 100 mg/kg bw/day oral rat oral REACH
NOAEL 600 mg/kg bw/day oral rat oral REACH

GHS Hazard Classification

Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.

Short-term Exposure Effects
The substance is irritating to the eyes, skin and respiratory tract. If this liquid is swallowed, aspiration into the lungs may result in chemical pneumonitis. Exposure far above the OEL could cause lowering of consciousness.
Long-term Exposure Effects
The substance defats the skin, which may cause dryness or cracking.
Routes of Exposure
The substance can be absorbed into the body by inhalation of its vapour, through the skin and by ingestion.

Safety Opinions

Official safety assessments from the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR).

cir
Verdict: safe
NOAEL: 100 mg/kg/d (inhalation)

ailable data and concluded that Diacetone Alcohol is safe in cosmetics in the present practices of use and concentration described in this safety assessment. Keywords Cosmetic Ingredient Review, Expert Panel for Cosmetic Ingredient Safety, Safety, Cosmetics, Diacetone Alcohol Introduction This

cir
Verdict: safe
NOAEL: 1000 mg/kg/d (not specified)

ailable data and concluded that Diacetone Alcohol is safe in cosmetics in the present practices of use and concentration described in this safety assessment. Keywords Cosmetic Ingredient Review, Expert Panel for Cosmetic Ingredient Safety, Safety, Cosmetics, Diacetone Alcohol Introduction This

cir
Verdict: safe
NOAEL: 1000 mg/kg/ d (not specified)

ailable data and concluded that Diacetone Alcohol is safe in cosmetics in the present practices of use and concentration described in this safety assessment. Keywords Cosmetic Ingredient Review, Expert Panel for Cosmetic Ingredient Safety, Safety, Cosmetics, Diacetone Alcohol Introduction This

cir
Verdict: safe
NOAEL: 1000 mg/kg bw/d (not specified)

ailable data and concluded that Diacetone Alcohol is safe in cosmetics in the present practices of use and concentration described in this safety assessment. Keywords Cosmetic Ingredient Review, Expert Panel for Cosmetic Ingredient Safety, Safety, Cosmetics, Diacetone Alcohol Introduction This

Expert Verdict

Primarily used in nail formulations with OSHA occupational exposure limits for inhalation settings; no significant dermal concerns at current use concentrations.

⚠️
Concern Level: Low

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is Diacetone Alcohol safe in cosmetics?

Primarily used in nail formulations with OSHA occupational exposure limits for inhalation settings; no significant dermal concerns at current use concentrations. The EU classifies Diacetone Alcohol as "permitted". Safety rating: EXCELLENT. 2 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by cir.

Is Diacetone Alcohol allowed in the EU?

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

What does Diacetone Alcohol do in cosmetics?

Diacetone Alcohol functions as: Fragrance ingredient, solvent. It is classified as a cosmetic ingredient in our database. CAS number: 123-42-2.

What is the Margin of Safety for Diacetone Alcohol?

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 Diacetone Alcohol?

The NOAEL (No Observed Adverse Effect Level) for Diacetone Alcohol is 100 mg/kg bw/day based on a oral study via oral route in rat. A total of 2 study endpoints are available. Source: REACH.

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