Used primarily to lower pH in swimming pools, spas, and industrial water treatment systems. It effectively reduces alkalinity and controls corrosion in cooling towers and boilers. Commonly used in cleaning products for removing mineral deposits and rust. Applied in the food industry as a dough conditioner and acidity regulator. Also utilized in metal finishing processes and as a component in some fertilizers to adjust soil pH. Safe and easy to handle compared to strong mineral acids, making it a preferred choice for pH adjustment in various commercial and residential applications.