Is Tetrahydro-6-nitroquinoxaline safe in cosmetics?
Tetrahydro-6-nitroquinoxaline has a safety rating of "POOR" in our database. EU status: permitted. US status: permitted.
Poor
Cosmetic Ingredient
Tetrahydro-6-nitroquinoxaline
INCI: TETRAHYDRO-6-NITROQUINOXALINE
Tetrahydro-6-nitroquinoxaline (CAS 41959-35-7 (free base); 158006-54-3 (hydrochloride)) is a cosmetic cosmetic ingredient functioning as Hair dyeing, light stabilizer — used as semi-permanent/direct hair dye at ≤1%. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
41959-35-7 (free base); 158006-54-3 (hydrochloride)
View industrial chemical safety profile →
Function
Hair dyeing, light stabilizer — used as semi-permanent/direct hair dye at ≤1% concentration
Safety Rating
POOR
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not specifically approved; coal-tar hair dye exemption may apply with warning label
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Tetrahydro-6-nitroquinoxaline.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for Tetrahydro-6-nitroquinoxaline.
Regulatory Flags
potential-allergen
Frequently Asked Questions
Is Tetrahydro-6-nitroquinoxaline allowed in the EU?
Tetrahydro-6-nitroquinoxaline EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tetrahydro-6-nitroquinoxaline do in cosmetics?
Tetrahydro-6-nitroquinoxaline functions as: Hair dyeing, light stabilizer — used as semi-permanent/direct hair dye at ≤1% concentration. It is classified as a cosmetic ingredient in our database. CAS number: 41959-35-7 (free base); 158006-54-3 (hydrochloride).
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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