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3824.99.39/Magnesium Oxide and Sodium Phosphate Hardener/Japan

Magnesium Oxide and Sodium Phosphate Hardener from Japan

Reactive powder blend of magnesium oxide and sodium phosphate that sets foundry molds through chemical hydration. Classified HTS 3824.99.39 as inorganic mixture for no-bake foundry systems. Provides rapid strength development without heat.

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

• Maintain MgO:NaPO4 ratio documentation for consistent reactivity; control particle size <45 microns; separate from moisture during transit

Magnesium Oxide and Sodium Phosphate Hardener from Japan — Import Duty Rate | HTS 3824.99.39