Lignosulfonate is one of lignin derivatives. It is the source and lignin, chemical structures and physical properties are different. Lignosulfonate mainly from the sulfite pulping process resulting “black liquor”, separated from the black liquor extracted, mainly ligno sodium or calcium lignosulphonate.

The three components of wood lignin itself (the other two are the cellulose and hemicellulose), is a natural polymer, the content is generally in the plant cellulose> lignin> hemicellulose. Lignin extracted from plants and there are many ways, including organic solvent extraction, alkaline extraction, anthraquinone extraction. If sulfite lignin extraction, you will get a lignin sulfonate.
Common lignin and lignosulfonate biggest difference is insoluble in water, easily soluble in water and lignosulfonate. Lignosulfonate very easy to absorb moisture in the air.