Sodium tetraborate solution is widely used across various industries as a precursor for producing boron and other boron compounds. It serves as a buffering agent in cleaning products and laundry detergents to maintain pH stability, and acts as a water softener by binding to metal ions, improving cleaning efficiency, particularly in dishwashing liquids and detergents for removing grease and stains.

In the pulp and paper industry, it helps control mold and condition water during production. Employed in the formulation of adhesives and cellulose derivatives for viscosity control. Commonly found in household and industrial disinfectants due to mild antimicrobial properties, and in oral health products such as certain mouthwashes.

Used in the manufacture of glass, ceramics, and enamel glazes as a fluxing agent to lower melting temperatures and enhance heat and shock resistance. Applied in metallurgy as a flux for soldering and welding to prevent oxidation. Utilized in electroplating baths to enhance conductivity and deposit uniformity.

In agriculture, it provides a source of boron essential for plant growth, especially in high-boron-demand crops like oranges and beets. Serves as a preservative in some wood treatments and as a fire retardant in cellulose insulation. Also used in educational and laboratory settings for buffer solutions, chemical demonstrations, and pH control in analytical work.