Zinc Sulfate Heptahydrate
Zinc sulfate heptahydrate (ZnSO4·7H2O), also known as zinc vitriol, is a hydrated chemically defined salt used in water treatment, leather processing, and as a laboratory reagent. It is classified under tariff item 2833.29.00 as an 'other sulfate' of zinc.
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 |
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 hydration state (7H2O) on the Certificate of Analysis, as anhydrous forms may be classified differently
• Ensure proper packaging to prevent dehydration or caking during transit
• Check if the end-use (e.g
• water treatment) requires additional permits from Environment and Climate Change Canada
Related Products under Tariff item 2833.29.00
Aluminum Potassium Sulfate (Potash Alum)
Aluminum potassium sulfate, or potash alum, is a double salt used in water purification, baking powder, and as an astringent. Pure forms not meeting specific alum definitions are classified under tariff item 2833.29.00 as 'other sulphates'.
Ammonium Metavanadate Sulfate
Ammonium metavanadate sulfate is a double salt combining ammonium metavanadate with sulfuric acid derivatives, used in vanadium pigment manufacturing and steel alloying. It is classified under tariff item 2833.29.00 as an 'other sulfate' because it is a chemically defined inorganic sulfate not elsewhere specified in Chapter 28.
Ammonium Persulfate
Ammonium persulfate is a peroxosulfate used as a bleaching agent, polymerization initiator, and etchant in electronics. As a peroxosulfate not elsewhere specified, it is classified under tariff item 2833.29.00 as 'other sulphates'.
Anhydrous Cobalt Sulfate
Anhydrous cobalt(II) sulfate (CoSO4) is a white crystalline powder used in catalyst production and analytical chemistry. It is a separate chemically defined compound of cobalt, falling under tariff item 2833.29.00 as an 'Other' sulfate.
Anhydrous Zinc Sulfate
Anhydrous zinc sulfate (ZnSO4) is the water-free form used in pharmaceuticals, electroplating, and as a catalyst precursor. It qualifies for tariff item 2833.29.00 as a chemically pure sulfate of zinc per Chapter 28 notes.
Basic Chromium Sulfate
Basic chromium sulfate, often with formula Cr(OH)SO4, is a partially hydrolyzed chromium salt used primarily in leather tanning processes. It is classified under tariff item 2833.29.00 as a sulfate of chromium, meeting the inorganic chemical definition of Chapter 28.