Short answer: Sodium lignosulfonate is used as a dispersant, binder, mild water-reducing or set-control component, and processing aid in selected industrial formulations. The correct use depends on the grade—not simply the chemical name.
Choose by function and industrial system
| Application | Function to evaluate | Important selection variables |
|---|---|---|
| Concrete and mortar | Cement dispersion, water-demand and workability support, possible set control | Cement chemistry, total cementitious basis, sugars, sulfate, solids, temperature and other admixtures |
| Ceramics and refractories | Particle dispersion, slurry rheology and green-strength binding | Clay/mineral type, slurry solids, pH, viscosity, drying and firing behaviour |
| Minerals, coal and granulation | Binder or dispersing aid | Particle size, moisture, binder solids, compaction, wet/dry strength and downstream process |
| Oilfield drilling fluids | Clay dispersion and rheology support | Temperature, salinity, calcium, mud type, filtration and compatibility |
| Dyes, pigments and industrial suspensions | Wetting, dispersion and anti-settling support | Particle surface, pH, electrolyte level, colour interaction and storage stability |
| Dust and surface stabilization | Fine-particle binding and crust formation | Surface material, climate, traffic, application equipment and reapplication criteria |
Current grade families
Green Agrochem maintains different sodium lignosulfonate documents for construction, dispersant, binder, liquid, retarder, ceramics and dust-control grades. These grades are not interchangeable. Start with the intended function and request the current TDS, MSDS/SDS and batch COA for the exact code.
- GAC-NaLS-Construction: construction-grade powder for concrete and cementitious formulation trials.
- GAC-NaLS-Dispersant-P: powder dispersant grade for particle-wetting and suspension trials.
- GAC-NaLS-Binder: binder grade for agglomeration and strength-development screening.
- Liquid and application-specific grades: select by solids, pH, ionic profile, storage and pumping requirements.
For current commercial specifications and document support, use the Sodium Lignosulfonate product page. For a broader technical overview, see Sodium Lignosulfonate and Its Industrial Application and the industrial application hub.
Legacy numerical claims: evidence status
The former version included useful-looking figures without identifying an exact grade, source revision, calculation basis, control or test method. They are preserved below for traceability but are not Green Agrochem specifications or recommendations.
| Legacy figure | Evidence/status | Required before reuse |
|---|---|---|
| 0.5–2% of the “total mixture” in concrete | Unverified and basis undefined | Exact grade; total cementitious or mix basis; as-supplied or dry solids; test method |
| Approximately 20–26% strength increase | Unverified performance claim | Age, cement/mix design, dosage, control, curing and test standard |
| More than 14% water reduction | Unverified performance claim | Exact grade, workability control, mix design and test standard |
| 15–20% three-day strength increase | Unverified performance claim | Mix, control, curing, dosage and compressive-strength method |
| Coal-water slurry: 60–75% coal, 25–40% water and 1% dispersant | Illustrative formulation description; source and mass basis not verified | Coal source/PSD, solids basis, dispersant grade, rheology target and source |
How to establish a working dosage
Use only a supplier starting range supported by the current TDS for the exact grade and application. Define whether it is based on as-supplied product, dry lignosulfonate solids, formulation mass, binder mass or total cementitious material. Screen several levels against a control and record water quality, pH, temperature, addition sequence, processing equipment and the relevant performance method.
Buyer documentation checklist
- Exact product code and physical form
- Current TDS and revision/date
- MSDS/SDS for handling, storage and transport
- Signed batch COA rather than an illustrative template
- Packaging, shelf life, MOQ, lead time and Incoterm
- Sample plan and measurable acceptance criteria
For grade selection, samples and documents, contact info@greenagrochem.com with the application, raw materials, process and target tests.
