Sodium bisulfate, also known as sodium hydrogen sulfate, is the sodium salt of the bisulfate anion, with the molecular formula NaHSO4. Sodium bisulfate is an acid salt formed by partial neutralization of sulfuric acid by an equivalent of sodium base, typically either in the form of sodium hydroxide or sodium chloride
S 1717 (OTTO) Sodium bisulphate, GR 99%+ Cas 10034-88-5 - used primarily to lower pH. For technical-grade applications, it is used in metal finishing, cleaning products,and to lower the pH of water for effective chlorination, including swimming pools.