Lignin Alkali is a natural high-molecular polymer prepared from alkaline papermaking black liquor. The preparation procedure includes concentration, filtration and spray drying. The Lignin Alkali has physical and chemical properties such as binding property, diluting property, dispersing property, adsorbability, permeability, surface activity, chemical activity and biological activity, etc.

Parameters:

Appearance	Black (Brown) Powder
Reducing Substances	≤8 %
Moisture	≤7%
PH Value	11.5-13.5
Insoluble Residue	≤2.0%
Inorganic Salt(Na2SO4)	≤5.0 %
Ca and Mg	≤1.5 %
Lignin	45－60 ％