Sodium lignosulfonate 99% CAS NO (8061-51-6) Industrial Grade

Chemical Identity: Sodium Lignosulfonate (CAS No. 8061-51-6) Description: Sodium lignosulfonate is a water-soluble lignin derivative obtained from the sulfite pulping process in the paper industry. It is commonly used as a dispersant, binder, and plasticizer in various industrial applications.

Physical Properties: Description: Sodium lignosulfonate typically appears as a brown to dark brown powder or liquid with a characteristic sulfurous odor. It is highly soluble in water, forming brown solutions. Its solubility and viscosity may vary depending on the degree of sulfonation and molecular weight.

Chemical Structure: Description: The chemical structure of sodium lignosulfonate consists of lignin molecules that have been sulfonated during the pulping process. The sulfonation introduces sulfonate groups (-SO3Na) onto the lignin backbone, imparting water solubility and anionic character.

Production Method: Description: Sodium lignosulfonate is produced as a byproduct of the sulfite pulping process used to extract cellulose fibers from wood. Lignin, a natural polymer in wood, undergoes sulfonation with sodium sulfite and sodium hydroxide, yielding sodium lignosulfonate along with cellulose pulp.

Applications in Industry: Description: Sodium lignosulfonate finds widespread applications in various industries, including construction, agriculture, ceramics, and textiles. It is used as a dispersant in concrete and gypsum formulations, a binder in pelletized feeds and animal feed additives, and a dust suppressant in road construction.

Construction Applications: Description: In the construction industry, sodium lignosulfonate is utilized as a plasticizer and water reducer in concrete admixtures. It improves workability, reduces water content, and enhances the strength and durability of concrete mixes.

Agricultural Applications: Description: Sodium lignosulfonate is used in agriculture as a dispersant and binder in pesticide formulations, as well as a soil conditioner and plant growth stimulant. It improves the dispersion and uptake of agrochemicals and enhances soil structure and water retention.

Environmental Impact: Description: Sodium lignosulfonate is considered environmentally friendly and biodegradable. It poses minimal risks to aquatic organisms and ecosystems when used according to recommended guidelines. However, excessive runoff into water bodies should be avoided.

Regulatory Status: Description: Sodium lignosulfonate is generally recognized as safe (GRAS) for use in food and feed applications by regulatory agencies such as the FDA in the United States and the European Food Safety Authority (EFSA) in the European Union. It is also approved for various industrial uses.

Safety Precautions: Description: While sodium lignosulfonate is generally considered safe, proper handling procedures should be followed to minimize dust inhalation and skin contact. Use of gloves, goggles, and a dust mask is recommended when handling powdered forms. Store sodium lignosulfonate in a dry, well-ventilated area away from sources of heat and ignition.