Moderate Cosmetic Ingredient NOAEL Data

4-Nitrophenyl Aminoethylurea

INCI: 4-NITROPHENYL AMINOETHYLUREA

CAS Number
27080-42-8
Function
Hair dye (direct / semi-permanent, yellow shade)
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted for use in hair dyes; FDA does not pre-approve hair dye ingredients except coal-tar colors requiring certification

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

1 study endpoint found for 4-Nitrophenyl Aminoethylurea. 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
LOAEL 1 mg/kg bw/day oral rat Subchronic COSMOS_DB

Expert Verdict

Nitro-aromatic amine structural class raises mutagenicity alerts; must comply with Annex III hair dye conditions including mandatory patch test warnings on labeling

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Concern Level: Moderate

Regulatory Flags

eu_cosing_listed

Frequently Asked Questions

Is 4-Nitrophenyl Aminoethylurea safe in cosmetics?

Nitro-aromatic amine structural class raises mutagenicity alerts; must comply with Annex III hair dye conditions including mandatory patch test warnings on labeling The EU classifies 4-Nitrophenyl Aminoethylurea as "restricted". Safety rating: MODERATE. 1 toxicological study endpoint(s) are available in our database.

Is 4-Nitrophenyl Aminoethylurea allowed in the EU?

4-Nitrophenyl Aminoethylurea EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does 4-Nitrophenyl Aminoethylurea do in cosmetics?

4-Nitrophenyl Aminoethylurea functions as: Hair dye (direct / semi-permanent, yellow shade). It is classified as a cosmetic ingredient in our database. CAS number: 27080-42-8.

What is the Margin of Safety for 4-Nitrophenyl Aminoethylurea?

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.

What is the NOAEL for 4-Nitrophenyl Aminoethylurea?

The NOAEL (No Observed Adverse Effect Level) for 4-Nitrophenyl Aminoethylurea is 1 mg/kg bw/day based on a Subchronic study via oral route in rat. Source: COSMOS_DB.

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