U.S. exports of Disodium Sulfate (Sodium Sulfate) (HS 283311) totaled $1.1M in August 2026.
Importers of Disodium Sulfate (Sodium Sulfate) paid $25K in duties in August 2026, an average duty rate of 2.93% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Disodium Sulfate (Sodium Sulfate) imports of $835K in August 2026 ran 22% below the year-to-date monthly average of $1.1M.
Last updated: August 2026 dataDisodium sulfate — commercially known as Glauber's salt in its hydrated form — is a high-volume industrial chemical used in detergent manufacturing, kraft pulp processing, and glass production. The US schedule distinguishes salt cake (a crude, lower-purity form used in pulp mills, classified under 2833111000) from refined grades, and further separates anhydrous disodium sulfate (2833115010) from other forms (2833115050). Canada is the leading US supplier, a position supported by proximity and USMCA trade terms, with China and India also significant sources.
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58 import shipments a month
Salt cake (2833111000) refers to crude sodium sulfate, typically a byproduct of hydrochloric acid production or other industrial processes, with lower purity and used primarily in kraft pulp mills. Refined disodium sulfate — whether anhydrous (2833115010) or in other forms (2833115050) — is a higher-purity product used in detergents and glass. The distinction is based on purity and processing, and importers should document the grade clearly on the commercial invoice.
Anhydrous sodium sulfate is hygroscopic and must be stored in sealed, moisture-resistant packaging to prevent caking and weight gain. While it is not classified as a hazardous material under standard DOT rules, importers should confirm packaging integrity and moisture content specifications with the supplier, as these affect product quality and potential reclassification disputes.
ImportsExports
Imports
$835KYoY · free account
Exports
$1.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $11.9M of Disodium Sulfate (Sodium Sulfate) and exported $13.1M.
Through August 2026. Source: U.S. Census Bureau.
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Subheading 5 of 10 in heading 2833
Subheading 283311 · $1.1M of $24.1M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2833115010 | Anhydrous Disodium Sulfate | $830K | 2.95% | 11.03% | $25K |
| 2833115050 | Disodium Sulfate, NESOI | $5K | 0.00% | 100.00% | -- |
| 2833111000 | Salt Cake of Disodium Sulfate | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2833115000 | Disodium Sulfate, Except Salt Cake, NESOI | $725K |
| 2833111000 | Salt Cake of Disodium Sulfate | $385K |
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.
Exports · August 2026
destination
Mexico and Canada together take 64% of it.
customs district
origin
entry
rate provision · imports
88.4% enters free of duty; duty collected equals 2.93% of imports for consumption.