MODERATE Cosmetic Ingredient NOAEL Data SCCS/CIR Reviewed Sensitization Data

P-AMINOPHENOL

Also known as: EINECS 204-616-2, p-Aminofenol, UNII-R7P8FRP05V, Activol, Aminophenol (+2 more)

P-AMINOPHENOL (CAS 123-30-8) is a cosmetic cosmetic ingredient functioning as Hair Dyeing. NOAEL 20 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); EU Regulation 1223/2009 status: restricted, max III/272 - (EC) No 1197/2013; 1 safety opinion reviewed (CIR Safety Assessment). Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety and pharmaceutical data.

View industrial chemical safety profile for CAS 123-30-8 →

Function
Hair Dyeing
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.

Chemistry & Identifiers

Formula
C6H7NO
MW
109.13 g/mol
EC Number
204-616-2
PubChem CID
403
IUPAC Name
4-aminophenol
InChIKey
PLIKAWJENQZMHA-UHFFFAOYSA-N

Regulatory Status

EU EU Status restricted
EU Max Conc. III/272 - (EC) No 1197/2013
US US Status permitted
US Notes CIR: S - IJT 34(Suppl.3):5-42, 2015

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

Toxicological Studies

10 study endpoints found for P-AMINOPHENOL. 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 10 mg/kg bw/day oral rat Subchronic COSMOS DB
NOAEL =0.067 mg/kg bw/d oral rat dermal absorption SCCS Opinion
NOAEL =0.067 mg/kg bw/d oral rat dermal absorption SCCS Opinion
NOAEL =0.067 mg/kg bw/d oral rat dermal absorption SCCS Opinion
NOAEL =0.067 mg/kg bw/d oral rat dermal absorption SCCS Opinion
NOAEL =10 mg/kg oral rat repeated dose toxicity SCCS Opinion
NOAEL =10 mg/kg bw/day dermal rabbit NOAEL study SCCS Opinion
NOAEL =10 mg/kg bw/d oral rat dermal absorption SCCS Opinion
NOAEL =10 mg/kg oral rat repeated dose toxicity SCCS Opinion
NOAEL =10 mg/kg oral rat repeated dose toxicity SCCS Opinion

Safety Opinions

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

CIR Safety Assessment Number 3, 1988
Verdict: unknown

Pre-Calculated Safety Assessment

Pre-calculated NOAEL → SED → MoS audit trail for P-AMINOPHENOL across SCCS product categories, with measured dermal absorption where available.

Sensitization Profile

Contact sensitization data for P-AMINOPHENOL based on clinical patch test studies and IFRA standards.

Sensitization Rate
moderate
Allergen Class
dye
EU Allergen Listed
no
Patch Test Positive Rate
1.0%
Cross-reactivity Group
para-amino-group
Reaction Type
contact-dermatitis

Source: IVDK; NACDG; ESSCA

EU CLP Annex VI Harmonized Classification

Legally binding harmonized classification per Regulation (EC) No 1272/2008 (CLP) Annex VI.

Signal Word
Warning
Pictograms
Health HazardHarmful / IrritantEnvironmental Hazard
Hazard Class and Category
Muta. 2; Acute Tox. 4 *; Acute Tox. 4 *; Aquatic Acute 1; Aquatic Chronic 1
Hazard Statements
  • H341 Suspected of causing genetic defects
  • H332 Harmful if inhaled
  • H302 Harmful if swallowed
  • H400 Very toxic to aquatic life
  • H410 Very toxic to aquatic life with long lasting effects

Inserted via ATP: CLP00

ECHA REACH Registration

European Chemicals Agency REACH dossier and Substances of Very High Concern listing.

Registration Type
Full
Tonnage Band
1,000 - 10,000 tonnes
Substance Type
SUBSTANCE; GROUP
SVHC Candidate
No
Hazard classification: Restricted (Annex XVII)

Expanded Jurisdictional Detail

Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.

KR Korea MFDS Annex 2 (Restricted)
Category: Restricted. Max: 산화염모제에 0.9%. 기타 제품에는 사용금지
SA Saudi SFDA (III - Restricted)
Product type: (a) Hair dye sub­stance in oxidat­ive hair dye products (b) Products in­tended for col­ouring eyelashes.
JPKR Japan/Korea Cosmetics
Korea (Restricted): max 0.9%
BRIN Brazil/India Cosmetics
India: Restricted
Additional Jurisdictional Restrictions (3)
Jurisdiction Status Max % Product Type
CN permitted_hair_dye 1 Oxidative hair dye products
IN restricted 1.3 oxidative hair dye products
BR permitted_hair_dye - Oxidative hair dye

Expanded Dermal Absorption Data

Cross-database dermal penetration: EPA Dryad physics-based, Roberts Mendeley permeation, and SCCS-aggregated measured values.

EPA Dryad Skin Absorption (physics-based)
MW: 109.128
LogP: 0.043623
Kp epidermis: 0.12984 cm/h
% dose epidermis: 0.94%
% dose stratum corneum: 0.94%
% dose dermis: 0.94%

Source: EPA Dryad Skin Absorption 2024

Aggregated DA Values (5 records across 5 sources)
Type DA % Method Skin Model SCCS Ref
measured 13.0% - - SCCP/0000
measured 6.0% - - SCCP/0000
measured 2.9% - - SCCP/0000
measured 2.95% - - SCCP/0000
measured 13.0% - - SCCS/0078

PubChem Annotations

Safety and regulatory annotations from PubChem (NCBI) aggregated sources.

Safety (3)
Carcinogen Classification
Not listed by IARC.
Source: Toxin and Toxin Target Database (T3DB)
Endocrine Disruptors
Potential endocrine disrupting compound
Source: NORMAN Suspect List Exchange
Skin Eye Respiratory Irritation
... skin and eye irritant.
Source: Hazardous Substances Data Bank (HSDB)

Function Categories & List Membership

Cosmetic/Chemical Function Categories
Dye
Regulatory List Membership (1)
EU CosIng Cosmetics Ingredient Database

Editorial summary

Preliminary editorial summary for P-AMINOPHENOL — not a computed safety verdict. See the sourced toxicological data above.

Regulatory Flags

cosing-sourced eu-restricted needs-enrichment endocrine_disruptor eu_cosing_listed

NOAEL Studies Summary

View details ->

Public NOAEL study rows linked to P-AMINOPHENOL by CAS number or substance name.

Studies
25
Lowest NOAEL
0.067
Highest NOAEL
333

Units vary across source rows: mg/kg bw/d, mg/kg bw/day, mg/kg

SCCS Opinion COSMOS DB ECHA

Dermal Absorption

View details ->
Absorption % Method Vehicle
13.0% - -
6.0% - -
2.9% - -
2.95% - -
13.0% - -

Known Synonyms

EINECS 204-616-2 p-Aminofenol UNII-R7P8FRP05V Activol Aminophenol Energol Paramidophenol

Chemical Function

Dye

Regulatory Lists

Europe; Personal care; restricted Europe; Personal care - hair coloring Europe; Personal care - hair coloring Europe; Personal care - hair coloring Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring - hair color - professional detected; Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring - hair color - professional detected; Europe; Personal care - hair coloring - hair color - professional detected; Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring - hair color - professional detected; Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring detected; Europe; Personal care - hair coloring Canada; pharmaceutical Danish Environmental Protection Agency

Australian Status

AICIS status: listed

Cross-Vertical Safety Context

Same-CAS public records found in pharmaceutical data.

SOURCE ChEMBL / DrugCentral / FAERS DB_PHARMA CAS match

Pharmaceutical Data

Same-CAS rows from the pharmaceutical spoke database.

Compound
4-AMINOPHENOL
ChEMBL ID
CHEMBL1142
View full pharmaceutical profile →

Frequently Asked Questions

Is P-AMINOPHENOL safe in cosmetics?

P-AMINOPHENOL has a safety rating of "MODERATE" in our database. EU status: restricted. US status: permitted. 10 toxicological study endpoint(s) are available in our database. This ingredient has been reviewed by CIR Safety Assessment.

Is P-AMINOPHENOL allowed in the EU?

P-AMINOPHENOL EU regulatory status: restricted. Maximum allowed concentration: III/272 - (EC) No 1197/2013. This is based on EU Regulation 1223/2009 and its amendments.

What does P-AMINOPHENOL do in cosmetics?

P-AMINOPHENOL functions as: Hair Dyeing. It is classified as a cosmetic ingredient in our database. CAS number: 123-30-8.

What is the NOAEL for P-AMINOPHENOL?

The NOAEL (No Observed Adverse Effect Level) for P-AMINOPHENOL is 10 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.

Is P-AMINOPHENOL used outside cosmetics?

P-AMINOPHENOL also appears in industrial chemical safety and pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

Does P-AMINOPHENOL have different safety status in cosmetics vs industrial chemicals?

P-AMINOPHENOL is classified GHS Danger (H302, H332, H317, H341, H373, H400, H410, H316) in the chemicals database but is restricted in EU cosmetics at max III/272 - (EC) No 1197/2013.

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