Sodium Lignosulfonate Supplier South Africa

Technical sodium lignosulfonate dispersant for concrete admixtures, animal feed binder, dust suppression, and mineral processing.

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Quick Specs

CAS No.	8061-51-6
Source	Softwood kraft paper pulping by-product
Form	Brown powder or 50% liquid
pH	8.0–10.5
Molecular Weight	1,000–140,000 g/mol
Anionic Charge	High
Active Content	≥90% (powder)

Sodium Lignosulfonate in Construction and Agriculture

Sodium lignosulfonate is a natural polyelectrolyte produced as a by-product of the sulfite paper-pulping process. Its polysulfonated structure provides strong adsorption onto cementite, calcium silicate hydrate, and mineral surfaces, making it an effective, cost-competitive concrete water reducer and dispersant. At low dosage (0.1–0.3% bwc) it reduces water demand by 8–12% while retarding setting, suitable for hot-weather concrete placement. In agriculture it binds feed pellets and controls dust on unpaved haul roads and stockpiles.

Grades and Supply

We supply sodium lignosulfonate in spray-dried powder (25 kg and 500 kg bags) and 50% liquid (IBC and bulk tanker). COA includes dry-matter content, pH, and sulphonate content (if required). SDS is provided. Lignosulfonate is not classified as a hazardous substance under standard transport regulations.

Applications

Concrete plasticiser and water reducer
Animal feed pellet binder
Dust-suppression agent on roads and mine sites
Mineral ore flotation modifier
Tanning and leather retanning agent
Dye-bath dispersant

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