2519.90.50.00/Reactive Magnesium Oxide for Water Treatment/Japan

Reactive Magnesium Oxide for Water Treatment from Japan

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.

Duty Rate — Japan → United States

12.5%

Rate breakdown

9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%

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Import Tips

• Specify reactivity grade (e.g

• light-burned) in invoices to support 2519.90 classification

• Provide bulk packaging proof; retail packs may face different valuation

• Test for free lime content, common in reactive magnesia, to confirm specs