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.

It stabilizes particle suspensions and controls rheology across a broad range of industrial formulations, making it a reliable workhorse for procurement teams sourcing high-performance dispersing agents.

In concrete and cement production, NNO functions as a water-reducing plasticizer, improving workability and compressive strength without increasing water content in the final mix.

Textile dyeing operations rely on it to disperse vat and disperse dyes evenly, preventing agglomeration and ensuring level dyeing on synthetic fibers during the manufacturing process.

In agrochemical formulations, it enables stable suspension concentrates and wettable powder products by keeping active ingredients uniformly dispersed throughout the product's shelf life.

Leather tanning and paper manufacturing also use NNO to control pigment and tannin dispersion, improving surface uniformity in finished goods and enhancing overall product quality.

Sodium polynaphthalenesulfonate is supplied as a brown powder or as a liquid solution, with powder being the dominant commercial form for most industrial and chemical applications.

Standard grades include technical-grade material specified by active content, typically ranging from 85% to 95% purity. Buyers should confirm particle size distribution and pH specifications.