Sodium Sulfite (Boiler Water O2 Scavenger)
CAS Number: 7757-83-7
Chemical oxygen scavenger for low and medium-pressure boiler feedwater. Reacts with dissolved O2 to prevent pitting corrosion of boiler tubes and steam drums.
Technical Specifications
| Fe | ≤ 0.005% |
| Na2SO3 | ≥ 97% |
| packaging | 25 kg bags |
| appearance | White crystalline powder |
| pH 10% solution | 9.0–10.5 |
Applications
- Low-pressure boiler feedwater (< 40 bar)
- Medium-pressure boiler feedwater (40–60 bar)
- Hot water heating systems
- Layup protection
Key Features
- Lowest cost O2 scavenger
- Fast reaction with dissolved O2
- Easy to test residual (simple kits)
- Suitable for boilers < 60 bar