Pre-filming Agent (Broad Spectrum) AY-722

Pre-filming Agent (Broad Spectrum) AY-722

I. Performance and Applications
▲ AY-722 High-Efficiency Pre-filming Agent is primarily composed of multiple chelating agents, dispersants, film-forming agents, surfactants, etc. The unshared electron pairs of oxygen atoms in organic chelators chemically adsorb with metal ions such as iron and calcium or iron atoms with partial positive charges, forming coordination bonds. This ultimately results in a layer of insoluble chelated film covering the surface of metals like carbon steel. This film has high resistance and can isolate the metal from corrosive media in water, thereby inhibiting corrosion.
▲ AY-722 High-Efficiency Pre-filming Agent features fast film formation, a fine and uniform film texture, good chemical stability, and low corrosion rates.

▲ AY-722 High-Efficiency Pre-filming Agent has strong adaptability to water quality and is not interfered with by harmful ions such as copper and iron in water;

▲ AY-722 High-Efficiency Pre-filming Agent is mainly used for pre-filming heat exchanger equipment and pipelines in new installations of circulating cooling water systems or after system maintenance. It forms a protective film on the metal surface to prevent corrosion of materials such as carbon steel, copper alloys, and stainless steel during operation.
II. Technical Specifications

III. Usage Method
▲ The dosing concentration of AY-722 High-Efficiency Pre-filming Agent is generally 1000 mg/L;

▲ Pre-filming time is 12-24 hours under cold conditions and 8-16 hours under hot conditions;

▲ During pre-filming, the calcium ion concentration in water should be no less than 50 mg/L, and a pH of 6-8 yields optimal results.

IV. Packaging and Storage
※ AY-722 High-Efficiency Pre-filming Agent is packaged in plastic drums, 25 kg per drum or as required by the customer;

※ AY-722 High-Efficiency Pre-filming Agent should be stored in a cool place. A small amount of precipitate may form over time, which does not affect its use.
V. Safety Precautions
AY-722 High-Efficiency Pre-filming Agent is neutral. Pay attention to labor protection during operation. Avoid contact with skin, eyes, etc. In case of contact, rinse thoroughly with plenty of water.