Poor Cosmetic Ingredient NOAEL Data GHS Classified

Ethylhexyl Methacrylate ⚠️

INCI: ETHYLHEXYL METHACRYLATE

CAS Number
688-84-6
Function
Film former (primarily nail enhancement products)
Safety Rating
POOR

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted — CIR: safe as used in nail products only when accompanied by directions to avoid skin contact

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

3 study endpoints found for Ethylhexyl Methacrylate ⚠️. 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 120 mg/kg bw/day oral rat oral REACH
NOAEL 100 mg/kg bw/day oral rat oral REACH
LOAEL 300 mg/kg bw/day oral - 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 and skin.
Routes of Exposure
The substance can be absorbed into the body by inhalation of its aerosol.

Expert Verdict

Known allergen with documented allergic contact dermatitis. Positive mutagenicity in lymphoma cell assay (negative in bacterial Ames). Cross-reactivity with widely used acrylates. Not suitable for leave-on skin products. Risk is mitigated if skin contact is avoided during nail product use.

⚠️
Concern Level: High

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Ethylhexyl Methacrylate ⚠️ safe in cosmetics?

Known allergen with documented allergic contact dermatitis. Positive mutagenicity in lymphoma cell assay (negative in bacterial Ames). Cross-reactivity with widely used acrylates. Not suitable for leave-on skin products. Risk is mitigated if skin contact is avoided during nail product use. The EU classifies Ethylhexyl Methacrylate ⚠️ as "permitted". Safety rating: POOR. 3 toxicological study endpoint(s) are available in our database.

Is Ethylhexyl Methacrylate ⚠️ allowed in the EU?

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

What does Ethylhexyl Methacrylate ⚠️ do in cosmetics?

Ethylhexyl Methacrylate ⚠️ functions as: Film former (primarily nail enhancement products). It is classified as a cosmetic ingredient in our database. CAS number: 688-84-6.

What is the Margin of Safety for Ethylhexyl Methacrylate ⚠️?

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 Ethylhexyl Methacrylate ⚠️?

The NOAEL (No Observed Adverse Effect Level) for Ethylhexyl Methacrylate ⚠️ is 120 mg/kg bw/day based on a oral study via oral route in rat. A total of 3 study endpoints are available. Source: REACH.

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