Is 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate safe in cosmetics?
1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
MODERATE
Cosmetic Ingredient
1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate
INCI: 1,3,4,6-TETRAMETHYL-2-PYRIMIDONE SULFATE
1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate (CAS Not publicly assigned for the sulfate salt form; base pyrimidone CAS 78365-50-1 (different isomer)) is a cosmetic cosmetic ingredient functioning as Hair dyeing. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
CAS Number
Not publicly assigned for the sulfate salt form; base pyrimidone CAS 78365-50-1 (different isomer)
View industrial chemical safety profile →
Function
Hair dyeing
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not specifically restricted by FDA; no CIR review found
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate.
Calculate MoS for your specific formulation with the MoS Calculator.
Editorial summary
Preliminary editorial summary for 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate — not a computed safety verdict. See the sourced toxicological data above.
Frequently Asked Questions
Is 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate allowed in the EU?
1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate do in cosmetics?
1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate functions as: Hair dyeing. It is classified as a cosmetic ingredient in our database. CAS number: Not publicly assigned for the sulfate salt form; base pyrimidone CAS 78365-50-1 (different isomer).
Compliance Tools
Check 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
Is 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for 1,3,4,6-Tetramethyl-2-Pyrimidone Sulfate in your formulation.