Description

Lignosulfonic Acid, Potassium Salt is a water-soluble anionic polyelectrolyte derived from lignin, a major component of wood. This versatile compound serves as a highly effective dispersant, binder, and stabilizer across numerous industrial processes. It is a critical raw material for industries seeking sustainable and efficient chemical solutions derived from renewable resources.

Application

• Concrete Admixtures: Acts as a powerful water-reducing agent and plasticizer to improve workability and strength of concrete mixes.
• Agricultural Formulations: Used as a dispersing and binding agent in wettable powders, suspension concentrates, and granulated fertilizers.
• Ceramics & Bricks: Functions as a binder and plasticizer in clay bodies, enhancing green strength and forming properties.
• Oil Well Drilling Fluids: Serves as a thinner and dispersant to control rheology and fluid loss in drilling muds.
• Dye & Pigment Dispersions: Provides excellent stabilization and prevents agglomeration in liquid colorant formulations.
• Industrial Cleaners: Enhances the performance of detergent formulations by acting as a sequestrant and dispersant for scale and soil.
• Foundry Sand Binders: Used as a core binder in metal casting processes for its binding and burnout properties.
• Textile & Leather Processing: Employed as a tanning auxiliary and dye leveling agent.

Basic Information

Product Name	Lignosulfonic Acid, Potassium Salt
CAS No.	37314-65-1
Molecular Formula	Variable polymer (C20H24O10S2·2K is a representative formula)
Molecular Weight	Variable (Polymeric)
Synonyms	Potassium Lignosulfonate; Lignosulfonic Acid Potassium Salt; Kraft Lignin, Sulfonated, Potassium Salt; Poly[(4-hydroxy-3-methoxyphenyl)methyleneketone sulfonate], potassium salt; Lignin sulfonic acid, potassium salt; Calcium-free Lignosulfonate; K-Lignosulfonate; Lignin, sulfonated, potassium salt
EINECS	253-459-1

Quality Control

Our Lignosulfonic Acid, Potassium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent performance and meets the specifications required for its target applications. A comprehensive Certificate of Analysis (COA) detailing purity, sulfonate content, pH, and other critical parameters is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed immediately after use to prevent caking and degradation due to moisture absorption.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Identification (IR)	Conforms
Assay (Lignosulfonate Content)	≥ 90%
pH (10% Solution)	8.0 - 10.5
Moisture Content	≤ 5.0%
Sulfate Ash	Contact for details
Reducing Substances	Contact for details
Water Solubility	Fully soluble

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.