Sodium molybdate, Na2MoO4, is a non-toxic, environment-friendly corrosion inhibitor for the protection of soft-water cooling systems. The agent is classified as anodic inhibitor, but its use requires the presence of oxygen or other oxidizing agents in solution
Sodium molybdate is commonly used as a metal corrosion inhibitor for iron and steel, and is commonly found in water treatment products like chiller systems, where bimetallic design and construction can raise the risk of metal corrosion.
Sodium molybdate provides an advantage over using sodium nitrite because it is dosed at lower ppm(s), and this allows for lower conductivity of the circulating water. Because of the lower conductivity levels in the cooling water, the potential for galvanic corrosion is greatly decreased.
