Sodium Lignosulfonate Liquid
Sodium lignosulfonate is the sodium salt of lignin sulfonic acid obtained as a spent sulfite liquor from wood pulp production, often concentrated for use as a dust suppressant and concrete plasticizer. Classified under HTS 3804.00.10.00 due to its origin as a lignin sulfonic acid salt from the wood pulping process.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If further purified or chemically treated
Advanced processing like ultrafiltration moves it from crude residual lyes to chemical preparations of heading 3824.
If when used/formulated as surfactant
Surface-active preparations containing lignosulfonates as principal ingredient fall under Chapter 34 detergents.
If high water content waste liquors
If predominantly water with minor lignin content, may classify as petroleum-free waste oils/liquors of heading 2710.
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Import Tips & Compliance
• Include pulp mill origin certification to distinguish from synthetic sulfonates that might classify elsewhere
• Declare exact concentration and Brix value; highly diluted solutions risk scrutiny as waste liquids
• Comply with DOT shipping regs for corrosive liquids (pH typically <2) with appropriate UN packaging
Related Products under HTS 3804.00.10.00
Calcium Lignosulfonate Powder
Calcium lignosulfonate is a water-soluble anionic polyelectrolyte derived from the sulfite pulping process of wood, consisting of lignin sulfonic acid neutralized with calcium. It falls under HTS 3804.00.10.00 as a salt of lignin sulfonic acid, typically used as a dispersant in concrete admixtures and as a binder in animal feed pellets.
Magnesium Lignosulfonate Granules
Magnesium lignosulfonate granules are produced by neutralizing lignin sulfonic acid from spent sulfite pulping liquor with magnesium compounds, used primarily as a binder in briquettes and foundry applications. HTS 3804.00.10.00 applies as it's a direct salt derivative from wood pulp manufacture.
Concentrated Lignosulfonic Acid Sodium Salt Solution
This 50% solids solution of sodium lignosulfonate is desugared and concentrated spent sulfite liquor from softwood pulping, employed as a dispersant in dyestuffs and pesticides. It qualifies for HTS 3804.00.10.00 as chemically treated residual lye containing lignin sulfonic acid salt.
Ammonium Lignosulfonate Spray-Dried Powder
Spray-dried ammonium lignosulfonate powder from neutralized sulfite pulp waste, serves as a water-reducing agent in concrete and emulsion stabilizer. Despite ammonium cation, classified under HTS 3804.00.10.00 as lignin sulfonic acid salt from wood pulp lyes (note: some classifications debate 2847 placement).
Desugared Calcium Lignosulfonate Flakes
Flaked calcium lignosulfonate with reduced sugar content from softwood sulfite process, used in ceramics as binder and in water treatment as flocculant. HTS 3804.00.10.00 covers this chemically treated (desugared) lignin sulfonic acid salt.