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Pumping Nitric Acid

Nitric acid is a moderately strong inorganic acid of a reducing nature with a host of uses. AxFlow  Ireland are experts at pumping Nitric Acid.

Nitric acid (HNO3), also known as aqua fortis (latin for "strong water") and spirit of niter, is a highly corrosive, mineral acid. 

The liquid has a boiling temperature of 120.5 °C at 1 atm.  Also, referred to as concentrated nitric acid. Pure concentrated nitric acid is a colourless liquid at room temperature.      

The challenges of pumping nitric acid       

Higher concentrations of Nitric Acid can attach to most metals so pumps manufactured from techno polymers are more suitable and can also be heavy depending on the concentration and temperature.  Nitric acid has a specfic gravity of 1.5 so care must be taken at higher conentrations that the motor and magnetic coupling (if using a mag drive pump) are not over loaded.


Nitric acid compatibility chart

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