Pharmaceutical Grade Magnesium Oxide USP
Light magnesium oxide meeting USP standards for use as an antacid and laxative in pharmaceuticals. Classified under HTS 2519.90.50.00 as other magnesium oxide, provided it derives from natural sources and is not a finished medicament.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If tableted, capsulated, or as finished antacid product
Formulated medicaments fall under Chapter 30, excluded from Chapter 25 by legal notes.
If laboratory-produced synthetic USP grade
Pure synthetic magnesium oxide is classified as a chemical in Chapter 28, not a mineral product.
If natural magnesite in raw form
Uncalcined natural magnesium carbonate (magnesite) uses 2520.10, before conversion to oxide.
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Import Tips & Compliance
• Provide USP certificate and origin documentation proving natural mineral derivation to distinguish from synthetic chemicals
• Ensure labeling specifies 'magnesium oxide' not formulated as a tablet or capsule to stay out of Chapter 30
• Test for purity levels; USP grade must meet pharmacopeia specs but remains under 2519 if bulk powder
Related Products under HTS 2519.90.50.00
Caustic Calcined Magnesia Powder
Caustic calcined magnesia is magnesium oxide produced by low-temperature calcination of magnesite, resulting in a reactive powder used in chemical and fertilizer industries. It falls under HTS 2519.90.50.00 as 'other magnesium oxide, whether or not pure,' distinct from fused or dead-burned varieties due to its calcination process and reactivity.
Technical Grade Magnesium Oxide for Fertilizers
Technical magnesia powder used as a magnesium supplement in agricultural fertilizers. It qualifies under HTS 2519.90.50.00 as other magnesium oxide from natural sources, not chemically modified beyond calcination.
Reactive Magnesium Oxide for Water Treatment
Highly reactive light-burned magnesia used for pH adjustment and softening in water treatment plants. Falls under HTS 2519.90.50.00 as other magnesium oxide due to its natural origin and low-temperature processing.
Periclase Magnesium Oxide Crystals
Natural periclase crystals, consisting of nearly pure magnesium oxide, used in research and refractories. Classified in HTS 2519.90.50.00 as other magnesium oxide, whether or not pure, from mineral sources.
Animal Feed Grade Magnesium Oxide
Coarse magnesium oxide powder formulated for livestock mineral supplements to prevent grass tetany. HTS 2519.90.50.00 applies as other magnesium oxide suitable for feed but imported in bulk.
Dunite-Derived Magnesium Oxide
Magnesium oxide calcined from dunite rock (olivine), used in steelmaking and refractories. Classified under HTS 2519.90.50.00 as other magnesium oxide from natural mineral sources.