Harmonized System
U.S. exports of Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates (HS 380400) totaled $7.2M in August 2026.
Importers of Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates paid $277K in duties in August 2026, an average duty rate of 10.07% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates imports of $2.8M in August 2026 ran 24% above the year-to-date monthly average of $2.2M.
Last updated: August 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.
63 import shipments a month
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.
Trade Directory
List your company under HS 380400 — Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates, so the companies trading it can find you. Be the first supplier listed.
Subheading 1 of 1 in heading 3804
Subheading 380400 · $7.2M of $7.2M
ImportsExports
Imports
$2.8MYoY · free account
Exports
$7.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $22.9M of Residual Lyes from Wood Pulp Manufacture, Including Lignin Sulfonates and exported $69.8M.
Through August 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 | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3804001000 | Lignin Sulfonic Acid and Its Salts | $2.5M | 11.23% | 93.85% | $277K |
| 3804005000 | Residual Lyes From Mfg Wood Pulp, NESOI | $283K | 0.00% | 0.00% | -- |
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 | $5.2M |
| 3804005000 | Residual Lyes From Mfg Wood Pulp, NESOI | $2.0M |
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 · August 2026
destination
Canada and Brazil together take 46% of it.
customs district
origin
entry
rate provision · imports
15.8% enters free of duty; duty collected equals 10.07% of imports for consumption.