Pre-filming Agent (Broad Spectrum)

Pre-filming Agent (Broad Spectrum) AY-722

I. Performance and Uses
▲  AY-722 High-Efficiency Pre-filming Agent is primarily 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. This ultimately results in a layer of insoluble chelate 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, fine and uniform film quality, good chemical stability, and low corrosion rates.

▲  AY-722 High-Efficiency Pre-filming Agent has strong adaptability to water quality and is not affected 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 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 the optimal pH range is 6-8.

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

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