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Scale and corrosion inhibitor Para B9306

Scale and corrosion inhibitor “B 9306” is a composition of chemical components, which is based on organic polymers, phosphonates, dispersants and azole compounds. The inhibitor is designed to prevent salt precipitation and corrosion protection of heat exchange equipment and communications in water circulation systems through cooling towers, as well as in water vapor-condensate systems; to protect ferrous and non-ferrous metals from corrosion and to prevent the formation of salt deposits. In some cases, this inhibitor is applicable in steam-condensate systems. 

Scale and corrosion inhibitor “B 9306” is produced in two grades A and B in accordance with the current technical specifications TU 2458-060-17423242-2012.


Used in services

Protection of equipment of water circulation systems


Inhibitor “B 9306” is constantly dosed into the water circulation system using a dosing pump. Dosing can be done directly from product drums or from working plastic containers. For ease of dosing, the reagent can be pre-diluted with water. It is considered more efficient to supply the reagent to make-up water. If the inhibitor is used in conjunction with a biocide, then it is applied after the biocide. The inhibitor is effective at evaporation rates up to 5.


The dosage of the inhibitor “B 9306” depends mainly on the hardness of the water. As a general recommendation, the working concentration of the inhibitor in the recycled water should be 20-50 g/cm3.

In the initial application of the inhibitor, shock doses of approximately 50-100 ppm in the volume of recycled water are recommended for 1-3 days to form a protective film.


physical and chemical indicators Grade A Grade B
Appearance light yellow to dark brown liquid light yellow to dark brown liquid
Density at 20°С, g/cm3 1.150 – 1.300 1.150 – 1.450
Pour point, С, not higher minus 10 minus 10