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HSChapter 28
U.S. imports of magnesium hydroxide and magnesium peroxide (HS 281610) totaled $3.1M in July 2026, traded with 13 countries.
Importers of Magnesium Hydroxide and Magnesium Peroxide paid $36K in duties in July 2026 — an effective duty rate of 3.3% on $1.1M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataMagnesium hydroxide — widely recognized in commerce as milk of magnesia when in suspension — functions as a flame retardant filler in polymers, a neutralizing agent in wastewater treatment, and an antacid active ingredient in pharmaceutical applications. Both magnesium hydroxide and the less common magnesium peroxide are captured under a single tariff line (2816100000). The Netherlands and Mexico lead US imports under this heading, with Israel also a significant source — reflecting Dead Sea Bromine Group's magnesium chemical operations.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
65 shipments/mo
In polymer compounding, magnesium hydroxide acts as a halogen-free flame retardant by releasing water vapor when heated, cooling the combustion zone. Key grade specifications include particle size distribution (typically 1–5 microns), surface treatment (stearic acid coating for polyolefin compatibility), and purity level. These parameters are negotiated commercially and do not affect HTS classification but are critical for end-use performance.
Yes. Pharmaceutical-grade magnesium hydroxide intended for use as an active ingredient or excipient is subject to FDA oversight, including compliance with USP monograph specifications and potentially Current Good Manufacturing Practice (cGMP) requirements at the foreign facility. Industrial-grade material for wastewater treatment or flame retardant use does not carry these FDA requirements. Importers should ensure the grade and intended use are clearly documented to support correct regulatory treatment at entry.
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Subheading 1 of 2 in heading 2816
Subheading 281610 · $3.1M of $3.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2816100000 | Magnesium Hydroxide and Magnesium Peroxide | $3.1M | 1.14% | 34.69% | $36K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2816100000 | Magnesium Hydroxide and Magnesium Peroxide | $1.5M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$3.1MYoY · Pro
Exports
$1.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Israel and Netherlands together supply 66% of it.
customs district
destination
entry
rate provision · imports
65.3% enters free of duty; the effective duty rate is 1.14%.