HC YELLOW NO. 7
- CAS NO.：104226-21-3
- Empirical Formula: C17H22N4O2
- Molecular Weight: 314.38
- MDL number: MFCD02751864
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-17 09:49:36
What is HC YELLOW NO. 7?
Contact allergens
HC Yellow no. 7 is a direct azo dye used in semiper manent hair dye preparation. Since this dye leads to PPD after hydrolysis, it explains the allergic reaction in PPD-positive patients.
Properties of HC YELLOW NO. 7
| Melting point: | 149 °C |
| Boiling point: | 578.8±50.0 °C(Predicted) |
| Density | 1.20±0.1 g/cm3(Predicted) |
| pka | 14.27±0.10(Predicted) |
| CAS DataBase Reference | 104226-21-3(CAS DataBase Reference) |
Safety information for HC YELLOW NO. 7
Computed Descriptors for HC YELLOW NO. 7
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