Chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement

HTS heading 2519: Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of oth…

6 numbered lines under heading 2519, including 4 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.

HTS heading 2519
HTS codeDescriptionUnitGeneralSpecialColumn 2
2519Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; other magnesium oxide, whether or not pure:
2519.10.00.00Natural magnesium carbonate (magnesite)tFree$10.33/t
2519.90Other:
2519.90.10.00Fused magnesia and dead-burned (sintered) magnesiakgFree1.7¢/kg
2519.90.20.00Caustic calcined magnesitetFree$20.70/t
2519.90.50.00OtherNote: See 9903.90.08.kgFree15.4¢/kg

Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.

Source: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.