Potassium lignosulfonate

Potassium lignosulfonate (CAS 37314-65-1), also sold as potassium ligninsulfonate, is a water-soluble anionic polymer derived from sulfite pulping of wood. It functions as a dispersant, plasticizer, and binder across a broad range of industrial processes.

In these applications, controlling flow behavior or particle suspension is commercially critical. In concrete and cement production, it acts as a water-reducing admixture, improving workability and compressive strength without increasing water content.

Agricultural formulators use it as a dispersant and binder in wettable powder pesticides and granular fertilizers. This ensures uniform particle distribution and dust suppression during handling and application in the field.

In leather tanning and textile dyeing, it disperses tannins and dyes evenly across substrates. This improves process consistency and reduces chemical waste, making it a valuable additive for large-scale manufacturing operations.

Water treatment operations use it as a sequestrant to inhibit scale formation. It helps keep mineral deposits in suspension within industrial cooling systems, preventing buildup that can lead to equipment inefficiency or failure.

Potassium lignosulfonate is supplied as a brown powder or spray-dried granules, with liquid concentrate forms also available for bulk industrial use. Standard grades include technical and agriculture-grade for various needs.

Purity and lignosulfonate content are typically specified by dry solids content and sulfonate group density. Buyers should confirm compatibility requirements, as molecular weight distribution varies between production sources.

These variations significantly affect performance in concrete versus agricultural applications. Ensuring the correct grade is selected is essential for achieving the desired chemical stability and performance in the final product.