2-Mercaptobenzothiazole (MBT)
CAS Number: 149-30-4
2-Mercaptobenzothiazole is a highly effective copper and copper alloy corrosion inhibitor used in cooling water and closed-loop water systems. It forms a stable protective film on copper surfaces by chelating with copper ions, dramatically reducing corrosion rates. MBT is often used in combination with azole-based inhibitors and phosphonate scale inhibitors in formulated water treatment programs.
Technical Specifications
| ash | ≤0.1% |
| purity | ≥99% |
| moisture | ≤0.3% |
| appearance | Light yellow powder or flakes |
| meltingPoint | 175–182°C |
Applications
- Copper and brass corrosion protection in cooling towers
- Closed-loop chilled water system protection
- Heat exchanger copper tube protection
- Industrial process water treatment
- Antifreeze and engine coolant formulations
Key Features
- Highly effective film-forming inhibitor for copper and copper alloys
- Very low effective dosage (0.5–5 ppm)
- Compatible with most scale inhibitors and biocides
- Stable over wide pH range (6–12)
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CAS Number
149-30-4
Category
Water Treatment ChemicalsAvailability
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