Of magnesium
Sulphides; polysulphides, whether or not chemically defined. > Other sulphates: > Of magnesium > Of magnesium
Duty Rate (from China)
Subheadings
Products classified 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 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.
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.
Magnesium Sulfate Monohydrate
Magnesium sulfate monohydrate (MgSO4·H2O), also known as kieserite, is used in fertilizers and animal feed supplements. It is a chemically defined sulfate of magnesium, falling under tariff item 2833.21.00. The product is free of organic stabilizers and is not excluded by Chapter 28 notes.
Pharmaceutical Grade Magnesium Sulfate
Pharmaceutical grade magnesium sulfate is a purified heptahydrate used in IV solutions and medical applications. It is a chemically defined magnesium sulfate, meeting USP standards, and falls under tariff item 2833.21.00. The product contains no organo-inorganic compounds or other substances that would exclude it from Chapter 28.
Technical Grade Magnesium Sulfate
Technical grade magnesium sulfate heptahydrate is used in industrial processes such as paper production and textile manufacturing. It is a chemically defined sulfate of magnesium, classifiable under tariff item 2833.21.00. The product has lower purity than pharmaceutical grades but remains a simple inorganic compound.