Prefilming Agent PO-680

Product Performance

The PO-680 high-efficiency pre-filming agent is mainly composed of various complexing agents, dispersants, film-forming agents, surfactants, etc. The unshared electron pairs of oxygen atoms in organic complexes chemically adsorb with metal ions such as iron and calcium or iron atoms with partial positive charges, forming coordination bonds. Finally, a layer of insoluble chelating film is formed to cover the surface of metals such as carbon steel. This membrane has a large resistance and can isolate metals from corrosive media in water, thereby playing a role in inhibiting corrosion.

PO-680 high-efficiency pre-filming agent features fast film formation, fine and uniform film quality, good chemical stability and low corrosion rate. PO-680 high-efficiency pre-filming agent has strong adaptability to water quality and is not disturbed by harmful ions such as copper and iron in water. It is mainly used for pre-filming of heat exchange equipment and pipelines after the start-up of new devices or system maintenance in circulating cooling water systems, forming a protective film on the metal surface to prevent corrosion of materials such as carbon steel, copper alloys, and stainless steel during operation.

Usage Method

The dosing concentration of PO-680 high-efficiency pre-filming agent is generally 1000mg/L. The pre-filming time is 12 to 24 hours in the cold state and 8 to 16 hours in the hot state. When pre-filming, the calcium ion content in the water should not be less than 50 mg/L and the pH should be between 6 and 8 for good results.

Packaging, Storage, Transportation and Precautions

The dosing concentration of PO-680 High-Efficiency Prefilming Agent is generally 1000 mg/L. The prefilming time is 12–24 hours in the cold state and 8–16 hours in the hot state. During prefilming, the calcium ion content in water should not be less than 50 mg/L, and a pH value of 6–8 is optimal for the prefilming effect.