Used in the production of agrochemicals, particularly as a catalyst in the synthesis of pesticides and herbicides. Plays a key role in petroleum refining by modifying asphalt and improving its viscosity and durability for road construction. Employed in the manufacture of detergents and water treatment chemicals due to its ability to sequester metal ions. Also utilized in polymer synthesis and as a dehydrating agent in organic reactions where strong acidity and low water content are required.