Description

Lignin, Alkali, Carboxylated CAS NO 68201-23-0 is a chemically modified, water-soluble biopolymer derived from lignin, featuring enhanced carboxyl group functionality. This modification significantly improves its dispersing, chelating, and binding properties, making it a high-value, sustainable additive. It is essential for industries seeking eco-friendly alternatives to synthetic polymers for applications in construction, agriculture, and material science.

Application

• Concrete Admixtures: Acts as a water-reducing agent and set retarder to improve workability and strength of concrete mixes.
• Dispersants & Stabilizers: Used in ceramic processing, dye dispersion, and coal-water slurries to prevent particle agglomeration.
• Agricultural Applications: Functions as a soil conditioner, dust suppressant, and carrier for slow-release fertilizers and pesticides.
• Oilfield Chemicals: Serves as a fluid loss control additive and thinner in drilling mud formulations.
• Metal Chelation: Binds to multivalent metal ions in water treatment and industrial cleaning processes.
• Binder Systems: Used in the production of carbon black, animal feed pellets, and briquettes.
• Polymer Composites: Incorporated as a renewable filler or compatibilizer in bio-composites and rubber.

Basic Information

Product Name	Lignin, Alkali, Carboxylated
CAS No.	68201-23-0
Molecular Formula	Complex polymeric mixture
Molecular Weight	Variable (Typically 1,000 - 20,000 g/mol)
Synonyms	Carboxylated Alkali Lignin; Sulfonated Lignin (modified); Lignosulfonate, carboxylated; Kraft Lignin, carboxylated; Oxidized Lignin; Polymeric lignin carboxylic acid; Lignin derivative with carboxyl groups; Sodium lignosulfonate carboxylate
EINECS	Contact for details

Quality Control

Our Carboxylated Alkali Lignin is manufactured under a stringent quality management system. Each batch is tested to ensure consistent performance in key parameters such as carboxyl group content, solubility, and ionic charge. A comprehensive Certificate of Analysis (COA) detailing purity, functional group analysis, and physical specifications is provided with every shipment to guarantee it meets your application requirements.

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); keep the container tightly sealed to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Brown to dark brown powder
Solubility (in water)	Completely soluble
pH (1% solution)	8.0 - 11.0
Moisture Content	≤ 8.0 %
Ash Content	≤ 25.0 %
Carboxyl Group Content	≥ 1.5 meq/g
Sulfur Content	≤ 6.0 %

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