Tungstate radical is free ion in tungstic acid and tungstate solution. Tungstate radical in tungstic acid solution often appears in form of WO42- . It often exists as WO42- or (W7O246-) in tungstate solution.
In tungstate solution, the acidity gets stronger, condensation degrees of tungstate radical gets bigger. When concentrate reaches in a certain range, WO3 precipitation will be separated out from strong acidity solution, which is tungstic acid.
Organic polyamine tungstate is a new type of multi-acid compound, deca-tungstate in aqueous solution is very unstable, it will be transformed into multi-tungstate balanced mixture.Tungstate can suppress stainless steel localized corrosion, its principle is: after WO42- moving in occlusion area will be adsorbed on the metal surface and can be fully or partially substituted adsorbed to replace chlorine ion on the surface. The corrosion products Fe2+ redox reaction of Fe3 + and WO2, tungstate and Fe2+, Fe3+ reacts hardly contain iron tungstate compound and ferrous tungstate covering the anode to form a corrosion protective film, lower occluded self caytalytic rate, thereby inhibiting further development of localized corrosion.
If you have any interest in tungstic acid, please feel free to contact us by email: firstname.lastname@example.org or by telephone:+86 592 5129696.