Sodium Nitrite Corrosion Inhibitor
CAS Number: 7632-00-0
Anodic passivating corrosion inhibitor for closed-loop systems and hydrostatic testing. Forms iron oxide passive film on steel surfaces.
Technical Specifications
| NaNO2 | ≥ 98% |
| moisture | ≤ 2% |
| packaging | 25 kg PE bags |
| appearance | White crystalline powder |
| pH 5% solution | 8.0–9.5 |
Applications
- Closed-loop heating/cooling
- Hydrostatic pressure testing
- Fire protection systems
- Automotive coolant
- Steel preservation during storage
Key Features
- Strong passivating inhibitor for steel
- Cost-effective for closed systems
- Easy to monitor (simple test kits)
- Compatible with glycol systems