Benzotriazole (BTA)
CAS Number: 95-14-7
Copper and copper-alloy corrosion inhibitor forming a stable protective film. Essential additive in cooling water, metalworking fluids and antifreeze formulations.
Technical Specifications
| ash | ≤ 0.05% |
| purity | ≥ 99.5% |
| moisture | ≤ 0.1% |
| packaging | 25 kg fiber drums |
| appearance | White to light yellow powder/granules |
| melting point | 96–99°C |
Applications
- Cooling water copper protection
- Antifreeze/coolant formulation
- Metalworking fluid additive
- Silver tarnish prevention
- Electronic circuit board protection
Key Features
- Forms stable Cu-BTA film on copper surfaces
- Effective at 1–5 ppm
- Works in both acidic and alkaline systems
- UV-stable protective film
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