Of magnesium
Sulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Of magnesium
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2833.21.00.00
Magnesium Sulfate Heptahydrate (Epsom Salt)
Magnesium sulfate heptahydrate, commonly known as Epsom salt, is a chemically defined inorganic salt of magnesium with the formula MgSO4·7H2O. It falls under HTS 2833.21.00.00 as a sulfate of magnesium, used in bath salts, gardening, and as a laxative. This crystalline compound is hydrated and meets Chapter 28 definitions for classification here.
Anhydrous Magnesium Sulfate
Anhydrous magnesium sulfate (MgSO4) is a dry, white powder used as a desiccant in labs and pharmaceuticals. Classified under HTS 2833.21.00.00 as a chemically defined sulfate of magnesium per Chapter 28 notes. It absorbs moisture without forming hydrates during standard handling.
Magnesium Sulfate Monohydrate
Magnesium sulfate monohydrate (MgSO4·H2O), or kieserite, is used in fertilizers and animal feed supplements. It is a sulfate of magnesium under HTS 2833.21.00.00, chemically defined without organic stabilizers. This form is less hydrated than Epsom salt but retains sulfate structure.
Pharmaceutical Grade Magnesium Sulfate
USP-grade magnesium sulfate is a purified heptahydrate used in IV solutions and medical applications. It qualifies under HTS 2833.21.00.00 as a chemically defined magnesium sulfate, excluding organo-inorganic compounds per Chapter notes. High purity ensures medical compliance.
Technical Grade Magnesium Sulfate
Technical grade MgSO4·7H2O is used in industrial processes like paper production and textiles. Classified in HTS 2833.21.00.00 as a magnesium sulfate, chemically defined without Chapter exclusions. Lower purity than pharma but suitable for bulk applications.
Food Grade Magnesium Sulfate
FCC-grade magnesium sulfate serves as a firming agent in canned vegetables and nutritional supplements. Under HTS 2833.21.00.00 as a chemically defined inorganic magnesium sulfate. Meets food chemical codex standards without organic additives.
Magnesium Sulfate for Fireworks
High-purity magnesium sulfate used in pyrotechnic formulations as an oxidizer component. Falls under HTS 2833.21.00.00 as a sulfate of magnesium, chemically defined per Chapter 28. Supplied in granular form for safe industrial blending.
Lab Grade Magnesium Sulfate Desiccant
Lab-grade anhydrous MgSO4 packaged for organic chemistry drying applications. Classified HTS 2833.21.00.00 as chemically defined magnesium sulfate. Granular form indicates prior firing to remove water.
Epsom Salt Flakes for Spa Use
Flaked magnesium sulfate heptahydrate designed for spa baths and muscle soaks. Under HTS 2833.21.00.00 as pure magnesium sulfate without perfumes or organics. Flake form enhances dissolution in water.
Magnesium Sulfate in Bulk for Agriculture
Bulk kieserite (MgSO4·H2O) for soil magnesium correction in farming. HTS 2833.21.00.00 covers this chemically defined sulfate before fertilizer mixing. Supplied in 50kg bags for large-scale application.