Sodium polynaphthalenesulfonate

Sodium polynaphthalenesulfonate (CAS 9084-06-4), commercially known as NNO or Dispersant NNO, is a synthetic anionic dispersant derived from naphthalene-formaldehyde condensation.

Where is Sodium polynaphthalenesulfonate used?

• Concrete and cement: water-reducing plasticizer improving workability and compressive strength without extra water
• Textile dyeing: disperses vat and disperse dyes evenly, preventing agglomeration and ensuring level dyeing on synthetic fibers
• Agrochemicals: stable suspension concentrates and wettable powders with active ingredients uniformly dispersed
• Leather tanning and paper: controls pigment and tannin dispersion for surface uniformity
• It stabilizes particle suspensions and controls rheology in industrial formulations.

Commercial specifications

• Technical grades specified by active content, typically 85% to 95% purity
• Buyers should confirm particle size distribution and pH specifications