What additives should be in boiler water?

Boiler water is added with chemicals to adjust its chemical characteristics for better preservation of the boiler, its steam and condensate pipes and consumer equipment.

Some of the most common products are:

Sodium phosphate (NaH2PO4).

Trisodium phosphate (Na2SO3).

Sodium sulphite (Na3PO4).

Caustic soda or sodium hydroxide (NaOH) (attention: excessive dosing can produce caustic brittleness in the boiler).

Hydrazine (N2H4) has been widely used for years, and it acts as a corrosion inhibitor by contributing to the formation of a layer of magnetite on metal surfaces and the fixation of oxygen. It is suspected of being a carcinogen and is therefore no longer used.

NOTE: This information is prepared for informational purposes and in good faith from information provided by various manufacturers, and may contain errors. ATTSU advises users to contact reputable boiler water treatment companies and use the equipment and products according to the supplier's instructions. ATTSU is not responsible for the inappropriate use of the information contained in this article.