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What Is Lignosulfonate? Chemistry, Types and Grade Selection
Lignosulfonates are water-soluble, anionic materials derived mainly from lignin in sulfite-pulping streams. They are not one pure molecule. Commercial products contain a distribution of sulfonated lignin fragments whose composition varies with biomass source, pulping conditions, recovery and subsequent processing. Their combination of aromatic polymer structure, sulfonate groups and other oxygen-containing functional groups allows them to…