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SITCSection 5
U.S. exports of sodium sulfates (SITC 52345) totaled $3.6M in July 2026.
Importers of Sodium Sulfates paid $67K in duties in July 2026 — an effective duty rate of 15% on $454K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sodium Sulfates imports of $1.1M in July 2026 ran 33% below the year-to-date monthly average of $1.6M.
Last updated: July 2026 dataAnhydrous sodium sulfate (salt cake) and the decahydrate form (Glauber's salt) are the two principal commercial grades, with anhydrous material dominating detergent manufacturing as a filler and processing aid, and Glauber's salt used in glass production and textile dyeing. Mirabilite — naturally occurring sodium sulfate decahydrate — is also traded under this heading when processed to commercial specification. Supply is geographically concentrated, with natural-source producers in arid regions and synthetic producers recovering sodium sulfate as a byproduct of rayon, silica, and dichromate manufacturing. Importers should distinguish between natural and synthetic grades on commercial documentation, as end-use specifications and pricing differ significantly.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
74 shipments/mo
Basic heading 390 of 465 in section 5
Basic heading 52345 · $1.1M of $28.9B
Anhydrous sodium sulfate (Na₂SO₄) contains no water of crystallization and is the preferred form for detergent and glass applications due to its higher active content and easier handling. Glauber's salt is the decahydrate (Na₂SO₄·10H₂O), which is bulkier and less stable at higher temperatures. Both fall within the sodium sulfates heading, but the grade and form should be specified on the invoice to support correct classification and to meet buyer specifications.
Yes — a significant share of global sodium sulfate supply is recovered as a byproduct from rayon (viscose) fiber production, kraft pulp mills, and certain chemical manufacturing processes. Byproduct material is often priced below natural-source or purpose-made product, which can create competitive pressure on domestic producers and may be a factor in antidumping investigations. Importers should monitor trade-remedy developments when sourcing from major producing countries.
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Exports · July 2026
destination
Mexico and India together take 75% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$1.1MYoY · Pro
Exports
$3.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.