HTS 2519.90.20Natural 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:Other: Caustic calcined magnesite

What that translates to:Caustic calcined magnesite

Also written 25199020 or 2519.90.2000. Rates as CBP is collecting them today. Updated Oct 1, 2026.

Country of origin

Caustic calcined magnesite (HTS 2519.90.20) from China owe no duty as of Oct 1, 2026: the regular duty is Free and no extra tariffs apply.

Total duty rateFreeNothing to pay on a $10,000 shipment.

Regular dutyBase rate (MFN) in the tariff scheduleFree

Total dutyFree

No forced-labor tariff on this product: it's on the tariff's exemption list (HTS 9903.05.86).

Sources: USITC Harmonized Tariff Schedule, Revision 20 (2026).

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Official description

Natural 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: Other: Caustic calcined magnesite

Legal text from the Harmonized Tariff Schedule, Revision 20 (2026), chapter 25: Salt; sulfur; earths and stone; plastering materials, lime and cement.

Statistical lines

The 10-digit numbers used on entry paperwork. They share this code's duty rates.

2519.90.2000 (2519902000)Caustic calcined magnesite · reported in t

What changed for this code

Jul 24, 2026Forced-labor tariffs start on imports from 60 economies (Section 301)
Jul 22, 202625% Section 301 tariff on products of Brazil starts
Jan 1, 2026Section 301 tariff on Nicaragua starts at 0%, set to rise to 10% in 2027 and 15% in 2028

Questions about HTS 2519.90.20

What is the duty rate for HTS 2519.90.20?

The regular (column 1 general) rate printed in the tariff schedule is Free. Goods from China owe no duty as of Oct 1, 2026, including any additional tariffs. Additional tariffs depend on the country of origin; choose one above to see its full rate.

Is HTS 2519.90.20 subject to Section 301 tariffs?

Yes, for goods from 1 country as of Oct 1, 2026: Nicaragua. Choose a country above to see the rate and any exemptions.

Is HTS 2519.90.20 subject to Section 232 tariffs?

No Section 232 tariff applies to HTS 2519.90.20 as of Oct 1, 2026, from any country of origin.

HTSLookup shows the duties CBP collects on this code by country of origin. Antidumping or countervailing duties may also apply to some exporters; they're set per company and aren't shown.