Lignosulfonate Dispersant & Binder · CAS 8061-51-6
Sodium Lignosulfonate for Industrial Formulations
Sodium lignosulfonate CAS 8061-51-6 is a water-soluble lignin-based dispersant, binder and processing aid used in concrete admixtures, dye and pigment dispersion, oil drilling muds, ceramic and refractory systems, dust control and selected feed or agricultural binder applications. It is also sold as sodium lignosulphonate, lignosulfonic acid sodium salt or sodium lignin sulfonate.
LigninCorp supports buyers with grade selection, TDS/MSDS documents, sample evaluation, packaging confirmation and export quotation for sodium lignosulfonate powder grades.
Product Overview
Sodium lignosulfonate is the sodium salt of lignosulfonic acid, derived from lignin generated in the sulfite pulping process. Its sulfonate groups and lignin backbone help disperse fine particles, improve wetting, support binding strength and stabilize selected water-based industrial systems.
The three general-purpose powder grades are compared below. For a single application, LigninCorp also lists dedicated grades, such as sodium lignosulfonate construction grade, sodium lignosulfonate dispersant grade, sodium lignosulfonate binder grade dust control powder grade and super grade.
Buyer note
Grade selection depends on active lignosulfonate content, sulfate level, pH range, reducing sugar, application system and required document package. Share your use case, target dosage, destination port and packaging requirement before quotation.
Main Specification
Typical values from the current TDS (Rev. 2.0) of each grade. Batch results are on the COA that ships with each lot.
| Item | Grade One | Grade Two | Grade Three |
|---|---|---|---|
| Product code | GAC-NaLS-1 | GAC-NaLS-2 | GAC-NaLS-3 |
| Appearance | Yellow-brown powder | Brown powder | Brown powder |
| pH | 7.0 – 9.5 (10% solution) | 9.0 – 13.0 | 4 – 6 |
| Dry matter | 95% min | 95% min | 95% min |
| Moisture | 5% max | 5% max | 5% max |
| Lignosulphonate content (dry basis) | 55% min | 60% min | 60% min |
| Water-insoluble matter | 1.5% max | 2% max | 1.5% max |
| Water reducing capacity | 8% min | 5% min | 5% min |
| Sulphate (SO₄²⁻) | 2 – 5% | Not listed | Not listed |
| Calcium & magnesium | 0.5% max | 0.5% max | 0.5% max |
| Reducing sugar | 7% max | 7% max | 7% max |
Which Sodium Lignosulfonate Grade to Buy
All three grades are 95% min dry matter powders. They differ mainly in pH, lignosulphonate content and water reducing capacity, so start from the pH your system can accept.
| Grade | What sets it apart (TDS) | Applications listed in the TDS |
|---|---|---|
| Grade One (GAC-NaLS-1) | Near-neutral to mildly alkaline pH 7.0 – 9.5, highest water reducing capacity of the three (8% min), sulphate 2 – 5% | Concrete plasticizer, cement grinding aid, ceramics, drilling mud, lead-acid battery plates and powder binders |
| Grade Two (GAC-NaLS-2) | Alkaline pH 9.0 – 13.0, lignosulphonate 60% min, water-insoluble matter 2% max | Concrete and cement, ceramics, plasterboard, drilling mud, dust control and binders for ore fines, coal and feed pellets; choose it when your system runs alkaline |
| Grade Three (GAC-NaLS-3) | Acidic pH 4 – 6, lignosulphonate 60% min, water-insoluble matter 1.5% max | Same application list as Grade Two; choose it when an alkaline additive would shift your pH |
| Dispersant Grade | Lignosulphonate 70% min, water-insoluble matter 0.5% max | Fungicide and other pesticide actives, dyes and pigments, concrete and ceramics |
Not sure which one fits? Send your application and target pH; a sample of two grades side by side is the quickest way to decide.
Sodium Lignosulfonate Powder or Liquid?
Powder ships dry and keeps 24 months. The liquid grade skips on-site dissolving and suits plants that dose from tanks, but it carries a little over half its weight as water, so compare prices on a dry-matter basis.
| Item | Powder (GAC-NaLS-1 / 2 / 3) | Liquid (GAC-NaLS-L) |
|---|---|---|
| Appearance | Yellow-brown to brown powder | Dark brown / black liquid |
| Dry matter / solid content | 95% min | 45% min |
| Lignosulphonate content | 55 – 60% min by grade (dry basis) | 50% min |
| Water-insoluble matter | 1.5 – 2% max by grade | 1.0% max |
| pH | By grade (see above) | 7.0 – 11.0 |
| Density | — | 1.20 – 1.32 g/ml |
| Packing | 20 / 25 kg bags or 500 kg / 600 kg jumbo bags | IBC tote, drum or flexitank |
| Shelf life | 24 months, unopened | 12 months; protect from freezing |
Liquid values from the GAC-NaLS-L TDS. Product page: liquid sodium lignosulfonate.
Application Fit and Grade Direction
Concrete and Cement Systems
Used as a conventional water reducer and cement dispersant. For application-specific support, review concrete admixtures and construction grade sodium lignosulfonate.
Dyes, Pigments and Coatings
Supports particle wetting, dispersion and suspension stability in selected water-based systems. Compare with Dispersant NNO, Dispersant MF and pigment and coating dispersant applications.
Oil Drilling Fluids
Used in selected drilling mud systems to support dispersion and rheology control. Oilfield buyers can also review oil well drilling fluids, chrome lignosulfonate and chrome-free options.
Ceramic and Refractory Additives
Works as a binder and dispersing aid in selected mineral, ceramic and refractory formulations. See ceramic refractory additives and related lignosulfonate binders.
Dust Control and Road Stabilization
For dust suppression, surface binding and bulk material handling, compare powder and liquid options through dust suppression road stabilization and dust control liquid.
Feed and Agricultural Binder Use
Can be evaluated as a binder or dispersing support where local regulations, quality requirements and buyer specifications allow. For agriculture-focused lignin products, compare with GREEN AGROCHEM sodium lignosulfonate and CHINALIGNIN sodium lignosulfonate.
Packaging, Documents and Export Support
Standard packing is 20 kg or 25 kg woven bags with a polyethylene liner, or 500 kg / 600 kg jumbo bags (FIBC). Custom packing, pallets and container loading plans can be agreed per order. Store sealed in a cool, dry place; shelf life is 24 months unopened.
Each shipment carries a batch COA, plus the commercial invoice, packing list and certificate of origin. Sodium lignosulfonate is usually declared under HS 3804.00.
Technical documents
Download the current TDS for each grade and the MSDS below. The values in the tables on this page come from these documents.
Buyer Questions
Which sodium lignosulfonate grade should I request?
Start from the pH your system accepts: Grade One for near-neutral to mildly alkaline systems (pH 7.0 – 9.5), Grade Two for alkaline systems (pH 9.0 – 13.0) and Grade Three for acidic ones (pH 4 – 6). Grade One also has the highest water reducing capacity of the three. For pesticide or dye dispersion, look at the Dispersant Grade (70% min lignosulphonate).
What is the CAS number of sodium lignosulfonate?
CAS 8061-51-6, registered as lignosulfonic acid, sodium salt. The CAS number names the substance, not the grade, so a purchase order should also state the product code (GAC-NaLS-1, -2 or -3) and refer to its TDS.
Should I buy sodium lignosulfonate powder or liquid?
Powder (95% min dry matter) is easier to store and cheaper to ship over long distances. Liquid (45% min solids) avoids dissolving and suits tank dosing, but about half of what you ship is water and the shelf life is 12 months. Compare offers on the same dry-matter basis.
How is sodium lignosulfonate packed?
20 kg or 25 kg woven bags with a polyethylene liner, or 500 kg / 600 kg jumbo bags (FIBC). Other packing can be agreed per order.
Which documents come with an order?
The TDS and MSDS are available on this page, and every shipment comes with a batch COA. Export documents such as the commercial invoice, packing list and certificate of origin are prepared with the shipment.
Can LigninCorp provide samples and technical documents?
Yes. Send target application, expected quantity, destination port and packaging requirement. LigninCorp can support TDS, MSDS/SDS, COA, samples and quotation details.
Is this page for B2B buyers or retail purchase?
This is a B2B industrial chemical product page for manufacturers, distributors and formulation teams. Pricing, availability and packaging are confirmed by inquiry instead of public retail checkout.
Request Sodium Lignosulfonate Grade Support
Send your application, required grade, order quantity, destination port and document needs. LigninCorp will help confirm suitable sodium lignosulfonate options and provide quotation support.
Additional Technical References
Background reading on lignosulfonate chemistry and dispersant performance.