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2836.40.10.00

Potassium carbonates / Dipotassium carbonate

Classification path

  1. Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate
  2. Potassium carbonates
  3. Dipotassium carbonate

Rates of duty

General (MFN)
1.9%
Column 2Cuba, North Korea, Russia, Belarus
6%
Unit of quantity
kg

Trade agreement rates

FreeGSP (lapsed since Dec 31, 2020), U.S.-Australia FTA, U.S.-Bahrain FTA, U.S.-Chile FTA, U.S.-Colombia TPA, AGOA (authorized through Dec 31, 2026), E, U.S.-Israel FTA, U.S.-Jordan FTA, U.S.-Korea FTA, U.S.-Morocco FTA, U.S.-Oman FTA, CAFTA-DR, U.S.-Panama TPA, U.S.-Peru TPA, USMCA, U.S.-Singapore FTA

Related lines in heading 2836

About heading 2836

Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

Heading 2836 covers carbonates, peroxocarbonates (percarbonates), and commercial ammonium carbonate containing ammonium carbamate. The heading splits first by the specific carbonate: sodium, potassium, calcium and barium have their own lines, while the rest fall under 2836.91 (lithium), 2836.92 (strontium) and 2836.99 (cobalt, bismuth, ammonium, lead and residual other). Rates in this heading range from free to 5.5% general (MFN).

Full guide to heading 2836

Products in this heading

  • Sodium bicarbonate (baking soda)
  • Sodium carbonate (soda ash)
  • Calcium carbonate
  • Potassium bicarbonate
  • Barium carbonate
  • Lithium carbonate
  • Cobalt carbonate
  • Commercial ammonium carbonate

Frequently asked questions

What is the HTS code for sodium bicarbonate?

Sodium hydrogencarbonate (sodium bicarbonate) is 2836.30.00.00, with a general (MFN) rate of Free.

What is the duty on calcium carbonate?

Calcium carbonate is 2836.50.00.00, and the general (MFN) rate is Free.

How do I classify lithium carbonate?

Lithium carbonates fall under 2836.91. U.S.P. grade goes in 2836.91.00.10 at 3.7% general (MFN), and all other lithium carbonates go in 2836.91.00.50 at 3.7% general (MFN).

Source: USITC Harmonized Tariff Schedule, retrieved October 21, 2026.

HTS 2836.40.10.00: Potassium carbonates / Dipotassium carbonate, 1.9% duty | HTSBase