Phenothiazine Radical Scavenger Antioxidant
Phenothiazine is a potent radical-scavenging antioxidant containing both sulfur and nitrogen heteroatoms, providing synergistic primary antioxidation when used alongside conventional phenolic and aminic antioxidants. Its unique tricyclic structure allows it to donate electrons to radical species at much lower concentrations than standard antioxidants. Phenothiazine is particularly effective as a thermal stabilizer in high-temperature synthetic lubricants, ester-based fluids, and specialty lubricant formulations where conventional antioxidants reach their thermal limits.
المواصفات الفنية
| purity | ≥98.5 wt% |
| appearance | Yellow to green-yellow crystalline solid |
| melting point | 183–186 °C |
| sulfur content | 15.8–16.2 wt% |
| molecular weight | 199.3 Da |
| nitrogen content | 6.9–7.1 wt% |
مجالات التطبيق
- High-temperature synthetic ester and PAO lubricants for aviation and industrial use
- Specialty electrical and transformer oils requiring excellent oxidative stability
- Thermal stabilizer in polyol ester hydraulic fluids for aircraft applications
- Additive in compressor oils operating above 200°C discharge temperatures
- Synergistic antioxidant component in premium engine oil and turbine oil packages
مميزات المنتج
- Dual nitrogen-sulfur heteroatom structure delivers exceptionally potent radical-scavenging activity
- Effective at very low concentrations (0.05–0.3%) making it a cost-efficient antioxidant option
- Strong synergy with DPA and hindered phenol antioxidants for comprehensive oxidation protection
- High melting point and low volatility ideal for very high temperature applications
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