Sodium Is A vital aspect for all animals and some plants. Sodium ions are the most important cation within the extracellular fluid (ECF) and therefore are the key contributor towards the ECF osmotic tension.[8] Animal cells actively pump sodium ions out with the cells by means of the sodium–potassium pump, https://www.tjcyindustrialchem.com/news/sodium-chlorite-uses-and-the-difference-from-chlorine.html