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SITCSection 5
U.S. imports of sodium hydroxide (caustic soda), solid (SITC 52262) totaled $2.4M in April 2026, traded with 14 countries.
Importers of Sodium Hydroxide (Caustic Soda), Solid paid $238K in duties in April 2026 — an effective duty rate of 10% on $2.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataSolid caustic soda — marketed as flakes, prills, or granules — is a co-product of chlorine production via the chlor-alkali process and serves as a primary alkaline reagent across pulp and paper, alumina refining, soap manufacturing, and water treatment industries. The solid form commands a logistics advantage over liquid caustic for long-distance or export shipments, as its higher concentration reduces freight cost per unit of NaOH. Antidumping duty orders have historically applied to caustic soda from certain origins, and importers should verify current trade-remedy status by supplier country before contracting.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Solid caustic soda (flakes, prills, or granules) contains a much higher NaOH concentration than the aqueous solution typically traded domestically, which reduces the weight and volume of freight per unit of active chemical. This makes solid forms more economical for long ocean voyages, though they require moisture-proof packaging and careful handling to prevent hydration and heat generation during storage.
Antidumping and countervailing duty orders have been applied to caustic soda from specific countries at various times. Before finalizing a supply agreement, importers should consult a licensed customs broker to check whether current orders apply to the intended country of origin, as applicable duties can materially affect landed cost calculations.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| THAILAND | $842K | -- | -$842K |
| TAIWAN | $538K | $7K | -$530K |
| SWEDEN | $538K | -- | -$538K |
| CANADA | -- | $347K | +$347K |
| KOREA, SOUTH | -- | $273K | +$273K |