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, agricultural applications, and pharmaceutical preparations. As a simple sulfate of magnesium, it is classifiable under tariff item 2833.21.00, provided it contains no added organic or cosmetic substances.
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 Epsom salt is scented or coloured for cosmetic use.
Bath preparations with added cosmetic ingredients fall under Chapter 33.
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
• Ensure the product is not mixed with fragrances or colourants, which would reclassify it as a cosmetic
• For pharmaceutical-grade Epsom salt, verify compliance with Health Canada's Good Manufacturing Practices
• Keep the chemical formula and purity certificate available for CBSA inspection
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, falling squarely within heading 28.33 as an 'other sulfate' of magnesium. The product is not excluded by Chapter 28 notes, as it contains no organic constituents or added substances that would alter its classification.
Epsom Salt Flakes for Spa Use
Epsom salt flakes for spa use consist of magnesium sulfate heptahydrate (MgSO4·7H2O) in flake form, designed to dissolve readily in bath water. As a chemically defined inorganic sulfate of magnesium, it is classified under tariff item 2833.21.00. The product contains no added perfumes, oils, or organic substances that would remove it from Chapter 28.
Food Grade Magnesium Sulfate
Food grade magnesium sulfate is a purified, FCC-grade chemical used as a firming agent in canned vegetables and as a nutrient supplement. It is a chemically defined magnesium sulfate meeting the requirements of Chapter 28 Note 1, with no organic or other added substances. The product is classifiable under tariff item 2833.21.00 as an 'other sulfate' of magnesium.
Lab Grade Magnesium Sulfate Desiccant
Lab grade anhydrous magnesium sulfate is a granular desiccant used in organic chemistry to dry solvents. It is a chemically defined compound of magnesium, free of organic stabilizers, and falls under tariff item 2833.21.00. The granular form results from prior firing to remove water, but it remains a simple sulfate.
Magnesium Sulfate for Fireworks
High-purity magnesium sulfate for fireworks is a granular, chemically defined compound used as an oxidizer in pyrotechnic formulations. It falls under tariff item 2833.21.00 as a sulfate of magnesium, with no organic or metallic additives. The product is supplied in a form suitable for safe industrial handling.
Magnesium Sulfate in Bulk for Agriculture
Bulk kieserite (MgSO4·H2O) is a monohydrate form of magnesium sulfate used for soil magnesium correction in agriculture. It is a chemically defined inorganic sulfate of magnesium, classifiable under tariff item 2833.21.00. The product is supplied in 50 kg bags for large-scale application, without any fertilizer additives.