Tungstate based corrosion inhibitors

Compositions – Electrically conductive or emissive compositions

Reexamination Certificate

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Details

C252S387000, C252S394000, C071S028000, C071S029000, C071S030000

Reexamination Certificate

active

07402263

ABSTRACT:
A trace amount of a tungstate is disclosed for inhibiting corrosion by nitrogen fertilizer solution, in particular, an ammonium nitrate fertilizer solution, (UAN) in contact with ferrous metal storage tanks, piping, and equipment surfaces. Tungstate added with a dispersant polymer is also effective for inhibiting corrosion.

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