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1,2,3-Benzotriazole (BTA) - High-Efficiency Copper Corrosion Inhibitor & Metal Passivator for Coolants & Coatings

Product Overview

1,2,3-Benzotriazole (BTA) is a highly effective heterocyclic compound renowned as one of the most superior corrosion inhibitors for copper and its alloys​ (brass, bronze). It forms a stable, insoluble polymeric film on the metal surface, providing exceptional protection against tarnishing and corrosion in aqueous and atmospheric environments.

Key Features & Benefits

1. Superior Copper Protection:​ Forms an inert chemisorbed layer on copper surfaces, effectively inhibiting both uniform and localized corrosion.
2. Multi-Metal Efficacy:​ Also provides protection for silver, steel, and other ferrous metals when used in synergistic formulations.
3. Versatile Applications:​ Functions as a corrosion inhibitor, metal passivator, and UV stabilizer.
4. Compatibility:​ Highly soluble in alcohols and glycols, making it ideal for incorporation into antifreeze coolants and water-based systems.
5. VCI Function:​ Can be used in Volatile Corrosion Inhibitor (VCI) papers and films for packaging.

Typical Applications

1. Automotive & Industrial Coolants:​ Essential additive in ethylene/propylene glycol-based antifreeze formulations.
2. Metalworking Fluids:​ Protects machine parts and tools made of copper alloys from corrosion.
3. Water Treatment:​ Used in closed-loop heating/cooling systems and for protecting copper heat exchangers.
4. Coatings & Plating:​ Additive in paints, coatings, and electroplating baths to improve durability.
5. VCI & Packaging:​ Active ingredient in vapor-phase corrosion inhibitors for metal parts storage.