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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If used as potassium-based mineral fertilizer
Kieserite in fertilizer mixes with potash shifts to Chapter 31 as mineral/chemical fertilizers.
If of other metals like zinc or copper
Sulfates of different metals fall under 2833.29, not magnesium-specific 2833.21.
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Import Tips & Compliance
• Label hydration level clearly to avoid confusion with anhydrous; obtain feed-grade approvals if for animal use; ensure no NPK blending to stay in Chapter 28
Related Products 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.
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.