Sodium Naphthalene Sulfonate Formaldehyde Condensate(NNO)

Dispersant NNO is Sodium salt of polynaphthalene sulphonic acid also called Sodium Salt of Naphthalene Sulfonate Formaldehyde Condensate,an anionic surfactant. Appearance in yellow brown powder, soluble in water, resisting acid and alkali, hard water and inorganic salts,no permeability and foaming, have affinity for proteins and polyamide fibers, no affinity for fibers such as cotton and linen.Famous for its chemical property of dispersant and protection for colloidal.


AppearanceBrown powderBrown powder
ComposeNaphthalene sulfonate formaldehyde condensateNaphthalene sulfonate formaldehyde condensate
Ion typeNegative ionNegative ion
 Item Parameter 
Disperse power(standard product)90%min95%min
Sodium sulfate18%max5%max
pH (1% water-solution)7-97-9
calcium and magnesium0.4%max0.4%max
Insolubles in water0.05%0.05%

Performance and use

As dispersing agent for vat dyes, reactive dyes, acid dyes, acid staining pad or pigment pad dyeing alos can work as a auxiliaries for vat dyes powder.

In printing and dyeing industry, mainly used in suspension pad dyeing of vat dye, leuco acid dyeing, disperse dyes and solubilised vat dyes dyeing.

Can also be used for silk/wool interwoven fabric dyeing, so that no color on the silk. In the dye industry, mainly used as diffusion additive when manufacturing dispersion and colour lake, used as stabilizing agent of rubber latex, used as a leather auxiliary tanning agent.

Can also be used for silk, wool interwoven fabric dyeing, so that there is no color on the silk.

As dispersant for leather tanning, textile printing and dyeing, pesticides, architecture, ceramics, rubber, paper, oil drilling,electroplating additives,pigment,carbon black

In dye industry, dispersing agent NNO (CAS 36290-04-7) is mainly used as diffusion auxiliary, rubber emulsion stabilizer and leather tanning agent in dispersion and lake manufacturing.


 25kg plastic woven bag with plastic lining.