HTS 2836Carbonates; peroxocarbonates (percarbonates); commercial ammonium carbonate containing ammonium carbamate

Product or HTS code

Rate lines15

Code	Description	General	Special	Column 2	Units
2836.20.00.00	2836.20.00.00Disodium carbonateGeneral 1.2% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 8.5% · kg	1.2%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	8.5%	kg
2836.30.00.00	2836.30.00.00Sodium hydrogencarbonate (Sodium bicarbonate)General Free · Column 2 Free · kg	Free		Free	kg
2836.40	2836.40Potassium carbonates
2836.40.10.00	2836.40.10.00Dipotassium carbonateGeneral 1.9% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 6% · kg	1.9%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	6%	kg
2836.40.20.00	2836.40.20.00Potassium hydrogencarbonate (Potassium bicarbonate)General 1.3% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 4.8% · kg	1.3%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	4.8%	kg
2836.50.00.00	2836.50.00.00Calcium carbonateGeneral Free · Column 2 25% · kg	Free		25%	kg
2836.60.00.00	2836.60.00.00Barium carbonateGeneral 2.3% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 8.4% · kg	2.3%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	8.4%	kg
	Other
2836.91.00	2836.91.00Lithium carbonatesGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25%	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2836.91.00.10	2836.91.00.10U.S.P. gradeGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2836.91.00.50	2836.91.00.50OtherGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2836.92.00.00	2836.92.00.00Strontium carbonateGeneral 4.2% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	4.2%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2836.99	2836.99Other
2836.99.10.00	2836.99.10.00Cobalt carbonatesGeneral 4.2% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 30% · kg	4.2%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	30%	kg
2836.99.20.00	2836.99.20.00Bismuth carbonateGeneral 5.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 35% · kg	5.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	35%	kg
2836.99.30.00	2836.99.30.00Commercial ammonium carbonate and other ammonium carbonatesGeneral 1.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 16% · kg	1.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	16%	kg
2836.99.40.00	2836.99.40.00Lead carbonatesGeneral 0.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 4.5% · kg	0.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	4.5%	kg
2836.99.50	2836.99.50OtherGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25%	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2836.99.50.10	2836.99.50.10Zirconium carbonatesGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2836.99.50.50	2836.99.50.50OtherGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg

2026 HTS Revision 21 (October 9, 2026)

Duty by country of origin

Rate line	Argentina23.25% of imports	Chile17.72% of imports	Germany15.68% of imports	Australia8.82% of imports	Philippines4.54% of imports	China3.2% of imports	France3.16% of imports	United Kingdom3.14% of imports	South Korea3.01% of imports	Canada1.97% of imports
2836.20.00.00Disodium carbonate	11.2%9903.05.22	13.7%9903.05.30	10%9903.05.39	13.7%9903.05.23	13.7%9903.05.64	38.7%9903.05.319903.88.03	10%9903.05.39	11.2%9903.05.81	12.5%9903.05.71	11.2%9903.05.29
2836.30.00.00Sodium hydrogencarbonate (Sodium bicarbonate)	10%9903.05.22	12.5%9903.05.30	10%9903.05.39	12.5%9903.05.23	12.5%9903.05.64	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.81	12.5%9903.05.71	10%9903.05.29
2836.40.10.00Dipotassium carbonate	11.9%9903.05.22	14.4%9903.05.30	10%9903.05.39	14.4%9903.05.23	14.4%9903.05.64	39.4%9903.05.319903.88.03	10%9903.05.39	11.9%9903.05.81	12.5%9903.05.71	11.9%9903.05.29
2836.40.20.00Potassium hydrogencarbonate (Potassium bicarbonate)	11.3%9903.05.22	13.8%9903.05.30	10%9903.05.39	13.8%9903.05.23	13.8%9903.05.64	38.8%9903.05.319903.88.03	10%9903.05.39	11.3%9903.05.81	12.5%9903.05.71	11.3%9903.05.29
2836.50.00.00Calcium carbonate	10%9903.05.22	12.5%9903.05.30	10%9903.05.39	12.5%9903.05.23	12.5%9903.05.64	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.81	12.5%9903.05.71	10%9903.05.29
2836.60.00.00Barium carbonate	2.3%	2.3%	2.3%	2.3%	2.3%	27.3%9903.88.03	2.3%	2.3%	2.3%	2.3%
2836.91.00.10U.S.P. grade	3.7%	3.7%	3.7%	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%
2836.91.00.50Other	3.7%	3.7%	3.7%	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%
2836.92.00.00Strontium carbonate	4.2%	4.2%	4.2%	4.2%	4.2%	29.2%9903.88.03	4.2%	4.2%	4.2%	4.2%
2836.99.10.00Cobalt carbonates	4.2%	4.2%	4.2%	4.2%	4.2%	29.2%9903.88.03	4.2%	4.2%	4.2%	4.2%
2836.99.20.00Bismuth carbonate	15.5%9903.05.22	18%9903.05.30	10%9903.05.39	18%9903.05.23	18%9903.05.64	43%9903.05.319903.88.03	10%9903.05.39	15.5%9903.05.81	12.5%9903.05.71	15.5%9903.05.29
2836.99.30.00Commercial ammonium carbonate and other ammonium carbonates	11.7%9903.05.22	14.2%9903.05.30	10%9903.05.39	14.2%9903.05.23	14.2%9903.05.64	39.2%9903.05.319903.88.03	10%9903.05.39	11.7%9903.05.81	12.5%9903.05.71	11.7%9903.05.29
2836.99.40.00Lead carbonates	10.5%9903.05.22	13%9903.05.30	10%9903.05.39	13%9903.05.23	13%9903.05.64	38%9903.05.319903.88.03	10%9903.05.39	10.5%9903.05.81	12.5%9903.05.71	10.5%9903.05.29
2836.99.50.10Zirconium carbonates	3.7%	3.7%	3.7%	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%
2836.99.50.50Other	3.7%	3.7%	3.7%	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%

Total duty on a $10,000 ocean shipment entered 2026-10-13, before customs fees. Origins are the leading sources of US imports under this heading in 2025 (US Census Bureau).