Dispersing Agent NNO, also called naphthalene sulfonic acid sodium salt, is an organic substance with the chemical formula CHNa₂O₆S₂. It is light brown powder in appearance. The dispersant NNO has good solubility and is easily soluble in water of any hardness. In addition, it is also resistant to acid, alkali, heat, hard water and inorganic salts.
In terms of function, dispersant NNO has excellent diffusivity and protective colloid properties, but has affinity for protein and polyamide fibers, but not for cotton, linen and other fibers. This makes it widely used in many industrial fields, especially in the dye industry, NNO can be used as a dispersant for disperse dyes, vat dyes, reactive dyes and acid dyes, thereby significantly improving the grindability and dispersibility of dyes. Besides, dispersing agent NNO also plays an important role in textile printing and dyeing, pesticides, papermaking, electroplating, coatings, pigments, water treatment and carbon black dispersion.
| Item | Standard |
| Diffusion rate (for standard) % | 95.0 min |
| PH value (1% aqueous solution) | 7-9 |
| Sodium Sulfate content ％ | 5 Max |
| Insoluble in water content % | 0.05 Max. |
| Content of calcium and magnesium % | 0.4 Max. |
Applications of Dispersing Agent NNO
- Dye industry. In dye production, it can help dye particles to be evenly dispersed in the solution, thereby improving the dye’s colorability and color fastness.
- Building materials industry. Adding NNO to building materials such as cement and gypsum to increase the slurry fluidity and adhesion of the material and improve construction efficiency.
- Pesticide industry. NNO can effectively disperse pesticide particles in water, improve the spray effect of pesticides and the prevention and control effect of farmland crops.
- Ink industry. Used as a dispersant for ink, it makes the ink particles evenly suspended in the solvent, improving the printing quality and abrasion resistance of the ink.
- Papermaking industry. In the papermaking process, dispersant NNO is used to disperse fiber and filler particles, thereby improving the texture and strength of paper.
Kingsun dispersing agent NNO has become an indispensable important chemical in many industrial fields due to its excellent dispersibility, stability, adaptability, environmental protection and ability to improve the properties of liquid interfaces.
- Excellent dispersibility. Dispersant NNO can effectively disperse particles, pigments and other substances in the solution quickly and evenly distribute its molecules, thereby achieving better dyeing or mixing effects. This characteristic makes it widely used in industrial fields such as printing and dyeing, coatings, etc.
- Strong stability. NNO has super strong dispersion stability, which can prevent the aggregation and precipitation of particles of dispersed substances and maintain the long-term stability of the dispersion system. This stability ensures that dispersant NNO can perform stable performance under various conditions of use.
- Strong adaptability. This product is suitable for various fiber materials, such as cotton, linen, wool, silk, etc., as well as various water-based systems, such as coatings, dyes, adhesives, etc. This wide adaptability enables it to meet the needs of different industrial fields.
- Environmentally friendly and pollution-free. It does not contain harmful substances, does not pollute the environment, and meets national environmental protection requirements. This makes it an ideal green chemical today with the increasing awareness of environmental protection.
- Improve the properties of liquid interfaces. The dispersant NNO can improve the properties of liquid interfaces, giving them better dispersing, thickening and emulsifying capabilities, which makes it play an important role in improving the fluidity, stability and rheological properties of liquids.
The preparation of dispersant NNO usually adopts the naphthalene sulfonation process, and the specific steps include the following:
- React benzene with concentrated sulfuric acid to obtain aromatic sulfonic acid;
- Desulfonate with hydrogen at high temperature to generate naphthalene;
- Oxidize the obtained naphthalene with oxygen under the action of a catalyst to obtain naphthol;
- Finally, react naphthol with sodium oxide to generate dispersant NNO.
If you are looking for high quality dispersing agent NNO or Dispersant MF, please remember to contact Kingsun online at any time. As a professional manufacturer of dispersing agents, Kingsun Company has its own factory and professional sales team. So Kingsun can provide good quality and reasonable price for you. Of course, Kingsun also provide excellent service for global customers.
