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SITCSection 5
U.S. imports of sulfates (nes) & alums (SITC 52349) totaled $35.1M in July 2026, traded with 37 countries.
Importers of Sulfates (NES) & Alums paid $1.4M in duties in July 2026 — an effective duty rate of 9.0% on $15.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataAluminum sulfate (alum) is the commercially dominant product in this residual group, widely used as a coagulant in municipal drinking-water and wastewater treatment and as a sizing agent in papermaking. Ferrous and ferric sulfates serve as coagulants and soil amendments, while copper sulfate is used in agriculture as a fungicide and in electroplating. The "NES" scope means this heading captures a broad range of metal sulfates not assigned to more specific headings, so precise chemical identification — including the metal cation and hydration state — is essential for correct classification. Alum used in water treatment is subject to NSF/ANSI 60 certification requirements when sold for potable-water applications in the United States.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
823 shipments/mo
Basic heading 113 of 465 in section 5
Basic heading 52349 · $35.1M of $28.9B
NSF/ANSI Standard 60 certifies that chemicals used in drinking-water treatment do not introduce contaminants above health-based levels. Municipal water utilities in the US typically require NSF/ANSI 60-certified aluminum sulfate for coagulation applications. Importers supplying the water-treatment market should confirm that their product carries current NSF certification and that the certificate covers the specific grade and concentration being imported.
Because this heading is a residual catch-all, CBP may scrutinize whether a particular sulfate belongs here or under a more specific provision. Commercial invoices should state the full chemical name, CAS number, metal cation, hydration state (anhydrous vs. hydrated), and purity grade. A binding ruling request can provide certainty for high-volume or recurring shipments of less common sulfate compounds.
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Imports · July 2026
origin
Mexico and China together supply 47% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$35.1MYoY · Pro
Exports
$21.2MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.