Patent ID: 8236205

Claim:
A composition comprising a corrosion inhibiting component having: one or more tetrahydrobenzotriazoles having the general formulas Ia or Ib: wherein R 1 is one or more of: hydrogen, a hydroxy group, or an aliphatic group; and wherein R 2 is hydrogen, or an aliphatic group; or salts of the tetrahydrobenzotriazoles; and one or more other triazoles having the general formula II: wherein R 3 is one or more of: hydrogen, a hydroxy group, aliphatic group, or an aromatic group' and wherein R 4 is hydrogen, or an aliphatic group; or salts of the other triazoles; wherein the tetrahydrobenzotriazoles are in a weight ratio to the other triazoles in the range of from about 1:89 to about 1:8 and such that the composition decreases the General Corrosion rate, as measured by copper electrodes in the presence of 10 ppm sodium hypochlorite, by at least about 0.05 mpy relative to a corrosion inhibitor component comprising 100% of the other triazoles; and wherein the corrosion inhibiting component comprises from about 10 to 100% of the composition.