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 Product Profile
- Full Name: Sodium Lignosulfonate
- Aliases: Lignosulfonic acid sodium salt, Lignin sulfonate sodium
- CAS Number: 8061-51-6
- EINECS: N/A
- Molecular Formula: (C20H24Na2O10S2)n
- Molecular Weight: Polymer macromolecule, molecular weight varies by grade
- Chemical Classification: Natural anionic polymer surfactant, bio-based dispersant, organic auxiliary chemical
- Core Advantages
Environmentally friendly by-product from pulp papermaking, excellent dispersion, water reduction, chelation and binding properties. Low cost, biodegradable, multiple specifications (low/high molecular weight, high purity). Widely used in concrete water reducing agent, pesticide dispersant, feed binder, ceramic additive, dye dispersant fields.
2. Physical & Chemical Properties
2.1 Physical Index
- Appearance: Yellow-brown to dark brown powder
- Odor: Faint woody odor
- Solubility: Fully soluble in cold/hot water; insoluble in ethanol, acetone and other organic solvents
- pH Value (1% aqueous solution): 7.0 ~ 9.0, weak alkaline
- Hygroscopy: Slightly hygroscopic under high humidity environment
- Surface Activity: Anionic surface active group, strong adsorption capacity on solid particle surface
2.2 Chemical Properties
- Polymer Structure: Macromolecule with sulfonic acid sodium group, phenolic hydroxyl group, carboxyl group
- Dispersion Mechanism: Electrostatic repulsion prevents particle agglomeration, reduces slurry viscosity
- Chelating Performance: Complexes with Ca2?, Mg2?, Fe3? metal ions, eliminates hard water interference
- Thermal Stability: Stable below 180℃; long-term high temperature above 200℃ causes molecular chain degradation
- Biodegradability: Natural lignin derivative, fully degraded by microorganisms, eco-friendly raw material
- Compatibility: Compatible with most inorganic salts, surfactants; poor stability under strong acid environment (pH＜3 precipitates lignin)
3. Main Application Fields
3.1 Construction Industry (Core Usage)
Low-cost water reducing agent for concrete, mortar and cement; improves concrete fluidity, reduces water consumption, enhances concrete strength and anti-permeability.
3.2 Pesticide & Fertilizer Industry
Dispersant and wetting agent for wettable powder, water dispersible granule pesticide; anti-caking dispersant for compound fertilizer, slow-release fertilizer carrier.
3.3 Ceramic & Refractory Industry
Grinding aid and slurry dispersant for ceramic blank; reduces slurry viscosity, improves blank fluidity, reduces firing defects.
3.4 Feed & Metallurgy
Binder for pellet feed, reduces feed powder loss; binder for mineral powder, iron ore pelletizing agent, improves pellet forming rate.
3.5 Dye, Water Treatment & Daily Chemical
Dispersant for vat dyes and reactive dyes; sludge flocculation auxiliary agent; dirt suspension agent in industrial cleaning formulations.
4. Quality Specification Table
| Test Item | Standard Index |
| CAS No. | 8061-51-6 |
| Molecular Formula | (C20H24Na2O10S2)n |
| Appearance | Yellow-brown to dark brown powder |
| Lignosulfonate Content | Industrial Grade ≥50%; Refined Grade ≥90% |
| Moisture Content | ≤8.0% |
| Water Insoluble Matter | ≤1.0% |
| pH (1% Solution) | 7.0 ~ 9.0 |
| Reducing Sugar | ≤12.0% |
| Bulk Package | 25kg woven bag with PE inner liner |
| Sample Package | 1kg / 5kg sealed plastic bag |
| Storage Requirements | Sealed cool dry warehouse ≤30℃; avoid damp and strong acid environment |
| Transportation Rule | General bio-based organic auxiliary, non-hazardous goods, waterproof packaging required |
| Shelf Life | 24 months under intact sealed packaging |
