Widely used as a reducing agent in industrial and laboratory settings, this chemical is particularly effective in removing stains and discoloration from materials. It plays a key role in textile processing, where it helps in bleaching cotton, wool, and other fabrics without damaging the fibers. Commonly applied in the dyeing industry, it keeps dyes in their reduced, soluble form, allowing even coloring before re-oxidation.

It is also used in water treatment to remove chlorine and dissolved oxygen, helping to prevent corrosion in piping systems. In environmental applications, it reduces heavy metals in contaminated water, aiding in remediation efforts. Another important use is in the food industry, where it acts as a preservative and dough conditioner, though its use is limited and regulated.

In analytical chemistry, it serves to deoxygenate solutions and reduce metal ions for analysis. It is also employed in photography and printing processes to develop images and remove color from inks. Due to its strong reducing power and instability in moist air, it must be handled and stored carefully to maintain effectiveness.