U.S. imports of Magnesium Hydroxide and Magnesium Peroxide (HS 281610) totaled $2.7M in August 2026, imported from 13 countries.
Importers of Magnesium Hydroxide and Magnesium Peroxide paid $121K in duties in August 2026, an average duty rate of 4.49% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 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.
55 import shipments a month
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.
Subheading 1 of 2 in heading 2816
Subheading 281610 · $2.7M of $3.1M
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ImportsExports
Imports
$2.7MYoY · free account
Exports
$1.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $31.7M of Magnesium Hydroxide and Magnesium Peroxide and exported $18.0M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2816100000 | Magnesium Hydroxide and Magnesium Peroxide | $2.7M | 4.49% | 49.41% | $121K |
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.
Imports · August 2026
origin
Israel and Netherlands together supply 63% of it.
customs district
destination
entry
rate provision · imports
50.6% enters free of duty; duty collected equals 4.49% of imports for consumption.