Dibutyl-3-Hydroxybutyl Phosphate (TBP-OH) is primarily used as a flame retardant in various polymer systems. It is effective in enhancing the fire resistance of materials such as plastics, coatings, and textiles. Its chemical structure allows it to act as a plasticizer, improving the flexibility and durability of the treated materials while simultaneously providing flame-retardant properties.

In the electronics industry, it is incorporated into circuit boards and cable insulation to reduce flammability and enhance safety. Additionally, TBP-OH is utilized in the production of adhesives and sealants, where it contributes to both fire resistance and improved material performance. Its compatibility with a range of polymers makes it a versatile additive in industrial applications.