Di-Octyl Sodium Sulfosuccinate (DOSS)

Dioctyl Sodium Sulfosuccinate (DOSS), a surface-active agent, is well known for its superior wetting power. Its use as a wetting agent in industries like textiles, leather and pulp and paper is well known. It is also used in pharmaceutical, emulsion polymerization, electroplating, paints, and printing inks. Specialties such as antifoam formulations, automotive radiator cleaners, battery separators, coal dust suppressant, glass cleaners rust preventives, wallpaper removers contain DOSS as a surfactant. It is useful in germicidal preparations using pine oil or phenol where it increases the activity of pine oil/phenol.

Properties:

  • The water solubility of DOSS is limited to about 5% depending on activity and temperature.
  • DOSS is an ester and therefore is subject to hydrolysis is strongly acidic and alkaline solutions. For practical purpose DOSS is stable between pH 1 to pH 10 at room temperature. This property can be advantageously used in certain processes by using its rapid wetting in solutions and then destroying the surface activity.
  • DOSS has superior resistance to Calcium and Magnesium ions and ready rinse ability.
  • DOSS has good solubilizing power for bringing in aqueous solutions certain water insoluble materials.