Sorel Cement Powder from Japan
Magnesium oxide-based hydraulic cement (Sorel) that sets with magnesium chloride solution, used for flooring. Though chemically distinct, classified HTS 2523.90.00.00 as other hydraulic when sold as powder. Not magnesium oxide crystals excluded by chapter note.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify MgO purity >85%; lower grades may be refractories
• Ship with moisture barriers to prevent premature hydration
• Distinguish from dead-burnt magnesite (2518.90) via reactivity tests