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U.S. exports of residual lyes from wood pulp manufacture, including lignin sulfonates (HS 380400) totaled $6.1M in July 2026.
Importers of Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates paid $146K in duties in July 2026 — an effective duty rate of 10% on $1.5M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataResidual lyes from kraft and sulfite pulping — including lignin sulfonic acid, its salts, and concentrated spent liquors — are widely used as dispersants, binders, and concrete admixtures, making them a commercially important byproduct stream from the forest products industry. The US schedule separates lignin sulfonic acid and its salts (3804001000) from other residual lyes (3804005000), a distinction that matters because lignosulfonates have well-established markets in construction chemicals and animal feed binders. Norway leads US supply, consistent with its large sulfite pulp industry, followed by Mexico and Canada. Imports from Canada may qualify for preferential treatment under USMCA, subject to rules-of-origin compliance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
49 shipments/mo
Lignin sulfonates serve as water-reducing admixtures and plasticizers in concrete and cement, dispersants in pesticide and dye formulations, dust suppressants for unpaved roads, and binders in animal feed pellets. Their anionic surfactant character and low cost make them a versatile industrial chemical derived from an otherwise waste pulping stream.
A certificate of analysis identifying the product as lignin sulfonic acid or a specific salt (e.g., sodium, calcium, or ammonium lignosulfonate) supports classification under 3804001000. Products that are concentrated spent sulfite liquors without isolation of the lignosulfonate fraction, or desugared liquors retaining a complex mixture, are more appropriately classified under 3804005000. Supplier technical data sheets and production process descriptions are key supporting documents.
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Subheading 1 of 1 in heading 3804
Subheading 380400 · $2.3M of $2.6M
ImportsExports
Imports
$2.3MYoY · Pro
Exports
$6.1MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3804001000 | Lignin Sulfonic Acid and Its Salts | $2.3M | 9.63% | 96.30% | $220K |
| 3804005000 | Residual Lyes From Mfg Wood Pulp, NESOI | $334K | 0.12% | 0.87% | $399 |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3804001000 | Lignin Sulfonic Acid and Its Salts | $4.2M |
| 3804005000 | Residual Lyes From Mfg Wood Pulp, NESOI | $1.7M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · July 2026
destination
Brazil and Canada together take 42% of it.
customs district
origin
entry
rate provision · imports
35.4% enters free of duty; the effective duty rate is 6.46%.