Technical Grade Magnesium Sulfate
Technical grade magnesium sulfate heptahydrate is used in industrial processes such as paper production and textiles. It is a chemically defined magnesium sulfate without Chapter 28 exclusions, though purity may be lower than pharmaceutical grades. Under tariff item 2833.21.00, it is classified as a sulfate of magnesium.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a sulfate of another metal
Other sulphates not specifically named are covered under this sibling item.
If the product is blended with other industrial additives
Prepared chemical products not elsewhere specified may apply if it is not a pure compound.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is not mixed with other industrial chemicals; pure magnesium sulfate is required for this tariff item
• Include the CAS number (10034-99-8) and technical specifications on the invoice
• If the product is used in food processing, ensure it meets CFIA standards for that application
Related Products under Tariff item 2833.21.00
Anhydrous Magnesium Sulfate
Anhydrous magnesium sulfate (MgSO4) is a dry, white powder used as a desiccant in laboratories and pharmaceutical manufacturing. It is a separate chemically defined compound of magnesium, meeting the criteria of Chapter 28 Note 1(a). It falls under tariff item 2833.21.00 as a sulfate of magnesium.
Epsom Salt Flakes for Spa Use
Epsom salt flakes for spa use are magnesium sulfate heptahydrate (MgSO4·7H2O) in flake form, designed to dissolve quickly in bath water. As a chemically defined inorganic salt of magnesium, it is classified under tariff item 2833.21.00. The absence of added perfumes or organic additives keeps it within Chapter 28.
Food Grade Magnesium Sulfate
Food grade magnesium sulfate is FCC-grade material used as a firming agent in canned vegetables and as a nutrient supplement. It is a chemically defined magnesium sulfate meeting food chemical codex standards, with no organic or organo-inorganic components. This places it under tariff item 2833.21.00 as a sulfate of magnesium.
Lab Grade Magnesium Sulfate Desiccant
Lab grade anhydrous magnesium sulfate desiccant is granular MgSO4 prepared by firing to remove water, used for drying organic solvents. As a chemically defined compound without organic stabilizers, it is classifiable under tariff item 2833.21.00. The granular form indicates the anhydrous state, which is still a sulfate of magnesium.
Magnesium Sulfate for Fireworks
High-purity magnesium sulfate for fireworks is used as an oxidizer component in pyrotechnic formulations. It is a chemically defined sulfate of magnesium, supplied in granular form for safe industrial handling. Under tariff item 2833.21.00, it is classified as a sulfate of magnesium, provided it is not mixed with other pyrotechnic ingredients.
Magnesium Sulfate Heptahydrate (Epsom Salt)
Magnesium sulfate heptahydrate, commonly known as Epsom salt, is a chemically defined inorganic salt with the formula MgSO4·7H2O. It is used in bath salts, agriculture, and industrial applications. As a sulfate of magnesium, it falls under tariff item 2833.21.00, provided it is not mixed with organic additives.