Is 2,4-Diaminophenol HCl safe in cosmetics?
2,4-Diaminophenol HCl has a safety rating of "POOR" in our database. EU status: prohibited. US status: permitted.
Poor
Cosmetic Ingredient
2,4-Diaminophenol HCl
INCI: 2,4-DIAMINOPHENOL HCL
2,4-Diaminophenol HCl (CAS 137-09-7 (formerly listed as dihydrochloride; CIR updated nomenclature to HCl)) is a cosmetic cosmetic ingredient functioning as Oxidative hair dye coupler. EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
137-09-7 (formerly listed as dihydrochloride; CIR updated nomenclature to HCl)
View industrial chemical safety profile →
Function
Oxidative hair dye coupler
Safety Rating
POOR
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
CIR: Safe for use in hair dyes at ≤0.2% (expressed as free base)
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 2,4-Diaminophenol HCl.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for 2,4-Diaminophenol HCl.
Frequently Asked Questions
Is 2,4-Diaminophenol HCl allowed in the EU?
2,4-Diaminophenol HCl EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does 2,4-Diaminophenol HCl do in cosmetics?
2,4-Diaminophenol HCl functions as: Oxidative hair dye coupler. It is classified as a cosmetic ingredient in our database. CAS number: 137-09-7 (formerly listed as dihydrochloride; CIR updated nomenclature to HCl).
Compliance Tools
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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