Nalco 77211 is an oxygen scavenger used in boiler feedwater treatment. It reacts rapidly with dissolved oxygen to prevent corrosion in boilers and steam systems.
Nalco 77211
Product Name:
Nalco 77211
Chemical Formula:
Sulfite (SO₃²⁻)
Area of usage:
- Boiler feedwater treatment
- Oxygen scavenging before steam generation
Recommended Dosage:
- 10–50 ppm depending on oxygen ingress and system design
Technical Data Summary:
- Appearance: Clear to pale liquid
- pH: 3.0 – 5.0,(100 %), (25 °C)
- Solubility: Completely soluble in water
- Stability: Stable; protect from air and light exposure
- Shelf Life: –24 months
Why Choose This Product / Key Benefits:
- Rapid oxygen removal
- Protects against pitting corrosion
- Suitable for medium- and high-pressure boilers
FAQs:
Q: Is Nalco 77211 FDA approved for food steam boilers?
A: Yes, within regulated limits.
Q: Does it provide passivation?
A: No, it removes oxygen but does not form a passivation film.