U.S. imports of solid sodium hydroxide (caustic soda) (HS 281511) totaled $2.4M in April 2026, traded with 14 countries.
Solid caustic soda is a foundational industrial alkali used in pulp and paper manufacturing, water treatment, and chemical synthesis, classified under a single US tariff line (2815110000). Imports from Sweden, Thailand, and Taiwan dominate supply, reflecting global chlor-alkali production capacity. Solid form commands distinct handling and packaging requirements compared to liquid soda lye, and importers should verify whether Section 301 measures apply to shipments from specific origins.
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Solid sodium hydroxide falls under HTS 281511 (tariff line 2815110000), while aqueous solutions (soda lye) are classified under 281512. The physical form at time of importation determines the correct heading, so moisture content and packaging documentation are important at entry.
Sweden, Thailand, and Taiwan are the top suppliers of solid sodium hydroxide to the US market, followed by Germany and India. Origin matters for assessing potential Section 301 exposure on shipments from certain countries.
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Imports
$2.4M
from 14 countries Β· YTD: $10.3M
Exports
$1.0M
Deficit of $1.4M (net importer)
Trade balance: deficit of $1.4M (net importer)
YTD: $10.3M imported (April 2026)
94 shipments/month
Monthly import values over time
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
ALUMINUM OXIDE, EXCEPT ARTIFICIAL CORUNDUM, NESOI
HS 281820
SULFURIC ACID; OLEUM
HS 280700
Top U.S. entry points for this product, ranked by latest-month import value.