High Temperature Corrosion and Scale Inhibitor for Boilers (Liquid Acidic)

Boiler-Specific High-Temperature Corrosion and Scale Inhibitor (Liquid Acidic) AG-990

I. Performance and Uses
▲ Boiler-specific corrosion and scale inhibitor AG-990 is a compound composed of organic phosphonic acid, polycarboxylic acid, and other high polymers. It exhibits excellent corrosion inhibition and scale prevention properties, with outstanding temperature resistance, making it highly effective for internal water treatment in both high and low-pressure boilers;

▲ Applicable boilers include hot water, steam, and locomotive boilers, among others. Boiler-specific corrosion and scale inhibitor AG-990 can also be used for corrosion and scale inhibition in systems such as seawater desalination, distillation, and automobile radiators.
II. Technical Specifications

III. Usage Instructions
▲ Add the agent to the boiler feed water at a ratio of 200g per ton of water. During use, ensure regular blowdown—once per hour for 5 to 10 seconds each time. If the boiler operates with existing scale, increase the dosage of the agent and perform blowdown more frequently. After 10 to 20 days of operation, shut down the boiler and manually remove the dislodged scale to prevent clogging of pipelines, then resume normal operation;

▲ If conditions permit, measure the concentration ratio of the boiler water and maintain it at around 10 times. Adjust other parameters in accordance with relevant regulations from the labor department (e.g., boiler water pH between 10–12, etc.);

▲ The chemical dosing tank should be made of plastic. For concrete tanks, apply anti-corrosion treatment; otherwise, the agent may corrode the material, increasing water hardness;
▲ The total hardness of the boiler feed water should be controlled within 200mg/L. If the hardness is too high, use lime treatment or other methods to reduce it; otherwise, the scale inhibition effect of boiler-specific corrosion and scale inhibitor AG-990 may be compromised.

IV. Packaging and Storage
※ Boiler-specific corrosion and scale inhibitor AG-990 is packaged in plastic drums, 25kg per drum or as per customer requirements;

※   Store in a cool place. Shelf life: twelve months.
V. Safety and Protection
AG-990 is weakly acidic. Use appropriate labor protection during operation. Avoid contact with skin and eyes. In case of contact, rinse thoroughly with plenty of water.