Used as a viscosity modifier and fluid loss control agent in water-based drilling fluids in oil and gas exploration. Helps stabilize the borehole by forming a thin, low-permeability filter cake on the wellbore wall.

Also used in construction as a water retention agent in cementitious formulations like tile adhesives, renders, and self-leveling compounds.

In pharmaceuticals and cosmetics, serves as a thickener, stabilizer, and suspending agent in topical gels and lotions.

Its high degree of anionic charge enhances dispersibility and compatibility with other water-soluble polymers.