Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Information
Name: Sodium poly[(naphthaleneformaldehyde)sulfonate]
Abbreviation: SNF, Dispersant MF
Alias: Naphthalenesulfonic acid polymer with formaldehyde sodium salt, Methyl naphthalene sulfonate formaldehyde condensate
CAS No.: 9084-06-4
General Molecular Formula: (C11H7O4S1Na1)n
Molecular Weight: Variable (500 ~ 2500, depends on polymerization degree n)
2. Physical and Chemical Properties
Physical Properties
- Appearance: Light beige to dark brown fine powder; liquid type is brown transparent aqueous solution
- Odor: Slight faint aromatic odor
- Solubility: Fully soluble in water under any water hardness; slightly soluble in methanol and ethanol; insoluble in toluene, hexane and other non-polar organic solvents
- pH Value (20 g/L aqueous solution): 6.0 ~ 9.0
- Hygroscopicity: Moderately hygroscopic, easy to absorb moisture in humid air
- Ion Property: Anionic polyelectrolyte surfactant
Chemical Properties
- Molecular Structure: Polymer formed by methylene (-CH2-) cross-linking methylnaphthalene sulfonate monomers, each naphthalene ring carries sulfonate sodium group (-S1O3Na1)
- Dispersing Performance: Strong electrostatic repulsion, excellent grinding aid and high-temperature dispersion stability, low foaming property
- Salt & pH Resistance: Stable under acidic, alkaline and high-salt conditions, compatible with inorganic electrolytes
- Thermal Stability: No obvious decomposition below 120 °C; long-term heating above 150 °C causes slight depolymerization
- Photostability: Stable under indoor light; long-term strong UV irradiation slightly darkens the solution color
- Compatibility: Compatible with anionic and nonionic surfactants; incompatible with cationic surfactants and heavy metal ions
3. Main Application Fields
1. Textile Dyeing Industry (Core Application)
- High-efficiency dispersant for disperse dyes and vat dyes, improves dye grinding efficiency and high-temperature dyeing uniformity
- Dye suspension stabilizer, enhances color brightness and color fastness of fabrics
2. Construction Chemicals
Superplasticizer for concrete, reduces water consumption, improves concrete fluidity and early strength; dispersant for gypsum and ceramic slurry
3. Fine Chemical & Industrial Auxiliaries
- Stabilizer for synthetic latex and rubber emulsion; auxiliary tanning agent in leather processing
- Grinding dispersant for inorganic pigments, carbon black and mineral fillers
4. Agricultural & Environmental Auxiliaries
Dispersant for pesticide wettable powder and water suspension agent; water treatment flocculation auxiliary
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 9084-06-4 |
| General Molecular Formula | (C11H7O4S1Na1)n |
| Appearance | Brown fine powder |
| Active Substance Content | Industrial Grade ≥85.0% |
| Sodium Sulfate Impurity | ≤8.0% |
| Water Content (KF) | ≤10.0% |
| pH (20g/L) | 6.0 ~ 9.0 |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 25kg PE lined woven bag / fiber drum |
| Storage Condition | Hermetic cool dry warehouse below 25 °C; segregated from cationic chemicals and moisture |
| Transportation Requirement | Non-dangerous goods, moisture-proof dust-proof sealed packaging |
| Shelf Life | 36 months under intact sealed packaging |
Safety Warning
Low acute toxicity solid powder. Dust inhalation irritates eyes, nose and respiratory tract; wear dust mask and chemical-resistant gloves during operation. Avoid mixing with cationic surfactants to prevent precipitation and loss of dispersing performance. Seal tightly to avoid moisture absorption and agglomeration. Waste residues belong to organic polymer industrial waste and need centralized harmless disposal.
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