The chemical formula for nitric acid is HNO3. Anhydrous pure nitric acid is a colorless liquid that easily decomposes into nitrogen dioxide, resulting in a reddish brown color.period Chemical filter Many adjustments have also been made, and the direction of product research and development has been reversed, in order to better meet the market demand. http://www.luoyuan108.com/
Many chemical users need to choose nitric acid pumps. So, how should nitric acid pumps be selected and which pump is better? Firstly, when transporting nitric acid, it is necessary to understand the characteristics, temperature, concentration, density, and equipment conditions of nitric acid, and then choose the corresponding pump type. Usually, nitric acid pumps can use 304 or 316L, but nitric acid reacts with metals. For the sake of service life, it is recommended to use fluoroplastic magnetic pumps. Of course, fluoroplastic centrifugal pumps can also be used. Generally, we recommend choosing magnetic pumps, which are fully enclosed, without shaft seals, and have the advantage of no leakage.
It should be noted that nitric acid has swelling properties for most rubber and fluororubber. Therefore, it is recommended to use expanded PTFE or pure PTFE for the auxiliary static seal of the pump (due to the hardness of pure PTFE, the sealing surface of nitric acid pumps often cannot be tightly compressed, so it is recommended to use soft PTFE).