HTS 2833Sulfates; alums; peroxosulfates (persulfates)

Product or HTS code

Rate lines21

Code	Description	General	Special	Column 2	Units
	Sodium sulfates
2833.11	2833.11Disodium sulfate
2833.11.10.00	2833.11.10.00Salt cakeGeneral Free · Column 2 Free · t	Free		Free	t
2833.11.50	2833.11.50OtherGeneral 0.4% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 3.6%	0.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	3.6%
2833.11.50.10	2833.11.50.10AnhydrousGeneral 0.4% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 3.6% · t	0.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	3.6%	t
2833.11.50.50	2833.11.50.50OtherGeneral 0.4% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 3.6% · t	0.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	3.6%	t
2833.19.00.00	2833.19.00.00OtherGeneral Free · Column 2 Free · kg	Free		Free	kg
	Other sulfates
2833.21.00.00	2833.21.00.00Of magnesiumGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 20% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	20%	kg
2833.22.00.00	2833.22.00.00Of aluminumGeneral Free · Column 2 10% · kg	Free		10%	kg
2833.24.00.00	2833.24.00.00Of nickelGeneral 3.2% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.2%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2833.25.00.00	2833.25.00.00Of copperGeneral 1.4% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 5% · kg, Cu kg	1.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	5%	kg, Cu kg
2833.27.00.00	2833.27.00.00Of bariumGeneral 0.6% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 4.2% · kg	0.6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	4.2%	kg
2833.29	2833.29Other
2833.29.10.00	2833.29.10.00Of cobaltGeneral 1.4% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 6.5% · kg	1.4%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	6.5%	kg
2833.29.20.00	2833.29.20.00Of ironGeneral Free · Column 2 Free · kg	Free		Free	kg
2833.29.30.00	2833.29.30.00Of vanadiumGeneral 5.5% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 40% · kg, V kg	5.5%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	40%	kg, V kg
2833.29.40.00	2833.29.40.00Of chromiumGeneral 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
2833.29.45.00	2833.29.45.00Of zincGeneral 1.6% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 8% · kg	1.6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	8%	kg
2833.29.51	2833.29.51OtherGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 30%	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30%
2833.29.51.10	2833.29.51.10Of manganeseGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 30% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30%	kg
2833.29.51.90	2833.29.51.90OtherGeneral 3.7% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG) · Column 2 30% · kg	3.7%	Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)	30%	kg
2833.30.00.00	2833.30.00.00AlumsGeneral 1.6% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	1.6%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2833.40	2833.40Peroxosulfates (persulfates)
2833.40.20.00	2833.40.20.00Of sodiumGeneral 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
2833.40.60	2833.40.60OtherGeneral 3.1% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25%	3.1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%
2833.40.60.10	2833.40.60.10Of potassiumGeneral 3.1% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2833.40.60.20	2833.40.60.20Of ammoniumGeneral 3.1% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.1%	Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)	25%	kg
2833.40.60.50	2833.40.60.50OtherGeneral 3.1% · Special Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG) · Column 2 25% · kg	3.1%	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	Mexico40.15% of imports	Canada8.15% of imports	China7.42% of imports	Germany7.01% of imports	India5.46% of imports	Taiwan4.71% of imports	Peru4.2% of imports	Finland4.07% of imports	Chile3.12% of imports	Cambodia2.86% of imports
2833.11.10.00Salt cake	10%9903.05.55	10%9903.05.29	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.44	10%9903.05.76	12.5%9903.05.63	10%9903.05.39	12.5%9903.05.30	10%9903.05.28
2833.11.50.10Anhydrous	10.4%9903.05.55	10.4%9903.05.29	37.9%9903.05.319903.88.03	10%9903.05.39	10.4%9903.05.44	10%9903.05.76	12.9%9903.05.63	10%9903.05.39	12.9%9903.05.30	10.4%9903.05.28
2833.11.50.50Other	10.4%9903.05.55	10.4%9903.05.29	37.9%9903.05.319903.88.03	10%9903.05.39	10.4%9903.05.44	10%9903.05.76	12.9%9903.05.63	10%9903.05.39	12.9%9903.05.30	10.4%9903.05.28
2833.19.00.00Other	10%9903.05.55	10%9903.05.29	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.44	10%9903.05.76	12.5%9903.05.63	10%9903.05.39	12.5%9903.05.30	10%9903.05.28
2833.21.00.00Of magnesium	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%
2833.22.00.00Of aluminum	10%9903.05.55	10%9903.05.29	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.44	10%9903.05.76	12.5%9903.05.63	10%9903.05.39	12.5%9903.05.30	10%9903.05.28
2833.24.00.00Of nickel	3.2%	3.2%	28.2%9903.88.03	3.2%	3.2%	3.2%	3.2%	3.2%	3.2%	3.2%
2833.25.00.00Of copper	1.4%	1.4%	26.4%9903.88.03	1.4%	1.4%	1.4%	1.4%	1.4%	1.4%	1.4%
2833.27.00.00Of barium	0.6%	0.6%	25.6%9903.88.03	0.6%	0.6%	0.6%	0.6%	0.6%	0.6%	0.6%
2833.29.10.00Of cobalt	1.4%	1.4%	26.4%9903.88.03	1.4%	1.4%	1.4%	1.4%	1.4%	1.4%	1.4%
2833.29.20.00Of iron	10%9903.05.55	10%9903.05.29	37.5%9903.05.319903.88.03	10%9903.05.39	10%9903.05.44	10%9903.05.76	12.5%9903.05.63	10%9903.05.39	12.5%9903.05.30	10%9903.05.28
2833.29.30.00Of vanadium	15.5%9903.05.55	15.5%9903.05.29	43%9903.05.319903.88.03	10%9903.05.39	15.5%9903.05.44	10%9903.05.76	18%9903.05.63	10%9903.05.39	18%9903.05.30	15.5%9903.05.28
2833.29.40.00Of chromium	13.7%9903.05.55	13.7%9903.05.29	41.2%9903.05.319903.88.03	10%9903.05.39	13.7%9903.05.44	10%9903.05.76	16.2%9903.05.63	10%9903.05.39	16.2%9903.05.30	13.7%9903.05.28
2833.29.45.00Of zinc	1.6%	1.6%	26.6%9903.88.03	1.6%	1.6%	1.6%	1.6%	1.6%	1.6%	1.6%
2833.29.51.10Of manganese	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%
2833.29.51.90Other	3.7%	3.7%	28.7%9903.88.03	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%	3.7%
2833.30.00.00Alums	11.6%9903.05.55	11.6%9903.05.29	39.1%9903.05.319903.88.03	10%9903.05.39	11.6%9903.05.44	10%9903.05.76	14.1%9903.05.63	10%9903.05.39	14.1%9903.05.30	11.6%9903.05.28
2833.40.20.00Of sodium	13.7%9903.05.55	13.7%9903.05.29	From 41.2%9903.05.319903.88.03AD/CVD may apply	10%9903.05.39	13.7%9903.05.44	10%9903.05.76	16.2%9903.05.63	10%9903.05.39	16.2%9903.05.30	13.7%9903.05.28
2833.40.60.10Of potassium	13.1%9903.05.55	13.1%9903.05.29	From 40.6%9903.05.319903.88.03AD/CVD may apply	10%9903.05.39	13.1%9903.05.44	10%9903.05.76	15.6%9903.05.63	10%9903.05.39	15.6%9903.05.30	13.1%9903.05.28
2833.40.60.20Of ammonium	13.1%9903.05.55	13.1%9903.05.29	From 40.6%9903.05.319903.88.03AD/CVD may apply	10%9903.05.39	13.1%9903.05.44	10%9903.05.76	15.6%9903.05.63	10%9903.05.39	15.6%9903.05.30	13.1%9903.05.28
2833.40.60.50Other	13.1%9903.05.55	13.1%9903.05.29	From 40.6%9903.05.319903.88.03AD/CVD may apply	10%9903.05.39	13.1%9903.05.44	10%9903.05.76	15.6%9903.05.63	10%9903.05.39	15.6%9903.05.30	13.1%9903.05.28

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).