2,5,6-TRIAMINO-4-PYRIMIDINOL SULFATE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
2,5,6-TRIAMINO-4-PYRIMIDINOL SULFATE
Safety grade: A
This is a synthetic chemical compound used in hair coloring products. It acts as a color-forming ingredient that helps create a wide range of hair dye shades when combined with other dye components.
It is used in hair dye formulations as a coupler or oxidative dye intermediate, reacting with other color agents during the dyeing process to produce lasting hair color.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Dyeing ingredients
- RESORCINOL — Grade E**
- THYMOL — Grade A
- M-AMINOPHENOL — Grade C**
- P-AMINOPHENOL — Grade C**
- 2-METHYLRESORCINOL — Grade C
- 4-AMINO-2-HYDROXYTOLUENE — Grade C
- P-PHENYLENEDIAMINE — Grade D**
- 2-METHYL-5-HYDROXYETHYLAMINOPHENOL — Grade C