Magnesium Hydroxide Powder
Pharmaceutical-grade magnesium hydroxide powder used as an antacid to neutralize stomach acid. It falls under HTS 2816.10.00.00 as a chemically defined hydroxide of magnesium, distinct from mixed compounds or formulations in other chapters. Typically supplied in bulk for compounding into tablets or suspensions.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | 3.1% | +25.0% | 28.1% |
| 🇲🇽Mexico | 3.1% | — | 3.1% |
| 🇨🇦Canada | 3.1% | — | 3.1% |
| 🇩🇪Germany | 3.1% | — | 3.1% |
| 🇯🇵Japan | 3.1% | — | 3.1% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If magnesium oxide rather than hydroxide
Magnesium oxide is classified separately under chlorides, but pure MgO falls in 2825.90; confusion arises from dehydration process.
If blended with organic stabilizers for industrial use
Preparations containing organic substances are excluded from Chapter 28 per chapter notes and go to heading 3824.
If diammonium magnesium phosphate form for fertilizers
Chapter 31 note excludes certain magnesium compounds used as fertilizers from Chapter 28.
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Import Tips & Compliance
• Verify purity certificate to confirm it's chemically defined magnesium hydroxide, not mixed with organics (which may shift to Chapter 38)
• Include safety data sheets (SDS) for hazardous material handling; common pitfall is mislabeling as fertilizer-grade
• Ensure packaging complies with DOT regulations for powders to avoid delays at ports
Related Products under HTS 2816.10.00.00
Magnesium Peroxide Granules
Granular magnesium peroxide for controlled oxygen release in bioremediation projects. HTS 2816.10.00.00 applies to this pure peroxide form, unworked beyond granulation. Used in environmental cleanup applications.
High-Purity Magnesium Hydroxide
99.9% pure magnesium hydroxide crystals for laboratory and electronic applications. Chemically defined compound under HTS 2816.10.00.00, meeting Chapter 28 note requirements for inorganic hydroxides. Supplied in small quantities for research.
Food-Grade Magnesium Hydroxide
FCC-grade magnesium hydroxide approved as food additive for acidity regulation. Remains under HTS 2816.10.00.00 as pure inorganic hydroxide, not a processed food ingredient. Used in supplements and fortification.
Magnesium Hydroxide Suspension
Aqueous suspension of magnesium hydroxide for use in water treatment to remove heavy metals and adjust pH. Classified under HTS 2816.10.00.00 as it is a chemically defined hydroxide of magnesium, not a formulated preparation. Ships in drums for industrial applications.
Technical Grade Magnesium Peroxide
Technical-grade MgO2 powder used as an oxygen release agent in aquaculture and soil remediation. It qualifies for HTS 2816.10.00.00 specifically as a peroxide of magnesium, separate from other peroxides like hydrogen peroxide. High purity ensures classification in Chapter 28.
Pharmaceutical Magnesium Hydroxide USP
USP-grade magnesium hydroxide compliant with pharmacopeia standards for antacid formulations. Falls squarely under HTS 2816.10.00.00 as a pure, chemically defined inorganic hydroxide. Bulk powder for tablet manufacturing.