Loading...
HSChapter 28
U.S. imports of solid sodium hydroxide (caustic soda) (HS 281511) totaled $3.1M in July 2026, traded with 17 countries.
Importers of Solid Sodium Hydroxide (Caustic Soda) paid $282K in duties in July 2026 — an effective duty rate of 10% on $2.7M in dutiable value, based on actual customs collections rather than the published tariff schedule. Solid Sodium Hydroxide (Caustic Soda) imports of $3.1M in July 2026 ran 18% above the year-to-date monthly average of $2.6M.
Last updated: July 2026 dataSolid caustic soda — produced as flakes, pellets, or prills by evaporating chlor-alkali electrolysis liquor — is a foundational industrial alkali used in pulp and paper bleaching, alumina refining, and soap manufacturing. The US tariff schedule captures all solid forms under a single line (2815110000), making physical form (flake vs. pearl vs. micropearl) a commercial rather than a classification distinction. Sweden leads US imports under this heading, an unusual sourcing pattern that reflects Scandinavian chlor-alkali capacity tied to the region's large pulp and paper industry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
96 shipments/mo
Solid sodium hydroxide (281511) and aqueous sodium hydroxide solution (281512) are classified under separate HS headings. Solid forms offer higher NaOH content per shipment weight and lower freight cost per unit of alkali, but require moisture-controlled packaging and specialized unloading equipment, whereas solution is pumped directly into storage tanks.
Importers should verify current antidumping and countervailing duty orders with CBP and the International Trade Commission, as caustic soda has historically been subject to trade remedy proceedings from certain origins. The applicable measures and scope can change; a licensed customs broker or trade attorney can confirm current order status before shipment.
ImportsExports
Imports
$3.1MYoY · Pro
Exports
$2.3MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
India and Thailand together supply 51% of it.
customs district
destination
entry
rate provision · imports
11.1% enters free of duty; the effective duty rate is 9.23%.
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 |
|---|---|---|---|---|---|
| 2815110000 | Solid Sodium Hydroxide (Caustic Soda) | $3.1M | 9.23% | 88.89% | $282K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2815110000 | Solid Sodium Hydroxide (Caustic Soda) | $2.3M |
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.
Subheading 3 of 4 in heading 2815
Subheading 281511 · $3.1M of $23.3M
Supplier Network
Get discovered by U.S. importers searching for HS 281511 — Solid Sodium Hydroxide (Caustic Soda). Be the first supplier listed.