Dihexyl sodium sulfosuccinate is a compound used as a substrate film in tumor treatment. It is an anhydrous sodium salt of sulfosuccinic acid and has a high resistance to radiation and oxidation. The hydroxyl group on the dihexyl sodium sulfosuccinate molecule allows the polymer to be dissolved in water. The receptor molecule, surfactant, can be used to control the particle size of the polymer. This product was injected into tumors to study its effect on tumor size and weight.