Cooling Tower Corrosion Inhibitor (MBT/Azole Blend)
CAS Number: 16090-14-5
A blended corrosion inhibitor combining mercaptobenzothiazole (MBT) and azole compounds (benzotriazole/tolyltriazole) formulated to protect copper, brass, and mild steel in open recirculating cooling water systems. The synergistic blend forms protective surface films on both ferrous and non-ferrous metals, reducing corrosion rates and extending heat exchanger life.
Technical Specifications
| dosage | 50–200 mg/L (system dependent) |
| density | 1.05–1.15 g/cm³ |
| appearance | Dark brown to black liquid |
| pH as supplied | 8.0–10.0 |
| active content MBT | 5–15% |
| active content azoles | 5–10% |
Applications
- Open recirculating cooling tower systems
- Copper alloy heat exchanger protection
- HVAC chilled water and condenser water circuits
- Industrial process cooling circuits with mixed metallurgy
- Combined scale and corrosion treatment programs
Key Features
- Multi-metal protection covering copper, brass, and mild steel
- Synergistic MBT/azole blend forms robust chemisorbed films
- Compatible with oxidizing and non-oxidizing biocide programs
- Effective at typical cooling water pH 6.5–9.0
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