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HSChapter 25
U.S. exports of sulfur (crude, refined, and all kinds except sublimed, precipitated, or colloidal) (HS 250300) totaled $245.0M in July 2026.
Importers of Sulfur (Crude, Refined, and All Kinds Except Sublimed, Precipitated, or Colloidal) paid $51K in duties in July 2026 — an effective duty rate of 9.0% on $566K in dutiable value, based on actual customs collections rather than the published tariff schedule. Sulfur (Crude, Refined, and All Kinds Except Sublimed, Precipitated, or Colloidal) imports of $74.7M in July 2026 ran 15% above the year-to-date monthly average of $64.8M.
Last updated: July 2026 dataCrude and refined elemental sulfur — the bulk commodity recovered from petroleum refining and natural gas processing — is the dominant product under this heading, with the US schedule separating crude/unrefined (2503000010) from refined sulfur (2503000090). Sulfur is a primary input for sulfuric acid, fertilizers (superphosphates), and rubber vulcanization, making it a high-volume industrial mineral. Canada is by far the largest US import source, driven by Alberta's oil sands and natural gas operations that generate large volumes of recovered sulfur as a byproduct.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.2K shipments/mo
Crude or unrefined sulfur (2503000010) is typically recovered directly from petroleum or gas processing with minimal further treatment — it may contain impurities and is often shipped in molten or granular form for industrial use. Refined sulfur (2503000090) has undergone additional purification to meet higher purity specifications required for certain chemical or agricultural applications. The distinction is based on the degree of processing and purity, and importers should obtain mill certificates or supplier specifications to support the correct line selection.
No. The heading explicitly excludes sublimed sulfur, precipitated sulfur, and colloidal sulfur — those forms are classified in Chapter 28 as inorganic chemicals. This heading covers only bulk elemental sulfur in its crude, refined, or other non-sublimed/non-precipitated forms. Importers dealing in pharmaceutical-grade or finely processed sulfur should confirm the correct chapter with a customs broker.
Subheading 1 of 1 in heading 2503
Subheading 250300 · $74.7M of $74.7M
ImportsExports
Imports
$74.7MYoY · Pro
Exports
$245.0MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Exports · July 2026
destination
Morocco and Brazil together take 82% of it.
customs district
origin
entry
rate provision · imports
99.3% enters free of duty; the effective duty rate is 0.07%.
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 |
|---|---|---|---|---|---|
| 2503000010 | Crde/Unrefind Sulfur Nt Sublimed/Preciptd/Colloidl | $72.2M | 0.00% | 0.00% | -- |
| 2503000090 | Sulfur, Refined, Nt Sublimed, Preciptd or Colloidl | $2.4M | 2.08% | 23.10% | $51K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2503000090 | Sulfur, Refined, Nt Sublimed, Preciptd or Colloidl | $124.0M |
| 2503000010 | Crde/Unrefind Sulfur Nt Sublimed/Preciptd/Colloidl | $120.9M |
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.
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