It's likely you're thinking of sodium bisulfate (also known as sodium hydrogen sulfate, NaHSO4). It's a common water treatment chemical with several uses:
* pH control: Sodium bisulfate is an acidic compound. In water treatment, it is used to lower the pH of water. High pH can cause scaling and corrosion in pipes.
* Chlorine booster: Sodium bisulfate is also used as a chlorine booster in swimming pools and other water treatment systems. It helps to activate chlorine, making it more effective at killing bacteria and algae.
* Coagulation: Sodium bisulfate can be used as a coagulant in some water treatment processes. It helps to remove suspended solids by causing them to clump together.
Important Note: It's crucial to handle sodium bisulfate carefully as it can be corrosive. Always follow the manufacturer's instructions and wear appropriate safety gear.
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