Benzotriazole is a corrosion inhibitor of high purity, most commonly used in yellow metal protection. Wintrol® B products are available as solids, salts and dissolved in glycols/alcohols. Solid benzotriazole products are off white to light yellow with very low odor. Wintrol® B is used as a vapor phase inhibitor and preferred for use in direct treatment of copper. Benzotriazole has a higher solubility in water than tolyltriazole, which aids in formulating.

Common Uses and Applications

Water Treatment
Engine Coolant
Metal Working Fluids

1,2,3 benzotriazole or “BTA” is the most simplistic triazole used for the protection of copper and its alloys.  Benzotriazole is used in its acid from (Wintrol B), as a sodium salt (Wintrol B-40) and solubilized within glycols and isopropanol

Benzotriazole Chemical Compound

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