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.
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 chemically modified for non-dispersant uses
Substantial chemical alterations beyond simple concentration or desugaring may classify it as prepared binder or adhesive of heading 3824.
If when blended and sold as animal feed supplement
Mixtures prepared specifically as fertilizers or feed additives fall under Chapter 31 rather than pure lignin salts.
If for waste/residual grades unfit for primary use
Low-purity byproducts from pulp mills considered chemical industry waste under heading 3825.
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Import Tips & Compliance
• Verify chemical composition via lab analysis to confirm lignin sulfonic acid salt content meets HTS criteria; impurities may trigger reclassification
• Provide manufacturer's specification sheets and COA documenting production from wood pulp sulfite process
• Ensure proper SDS and hazardous material declarations if shipped in bulk powder form to avoid delays
Related Products under HTS 3804.00.10.00
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.
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.