The need for protective films which aid in retention of newly fabricated surfaces of copper and copper alloys is generally recognized. Two commercially available aromatic triazoles function as unique corrosion inhibitors particularly of copper and copper alloys. Benzotriazole and tolyltriazole, which are manufactured by Sherwin Williams Chemicals, a Division of The Sherwin‐Williams Company, are known by the trademarked names of CobratecR 99 and CobratecR TT‐100, respectively. The chemical structures of these compounds, which are shown in Figure 1, have essentially the same functioral characteristics. Use of tolyltriazole is favoured for many applications because of economic considerations.
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