2833
4-digit headingSulfates; alums; peroxosulfates (persulfates)
This is a 4-digit heading — a category, not a filing code. Pick the more specific code beneath it that best matches your goods; only a 10-digit statistical code can be used on a customs entry.
Duty rates
No rate is published at this level — check the specific 10-digit statistical code beneath it.
| Rate | Value and what it means |
|---|---|
| General rate (Column 1) | See 10-digit codeColumn 1 general Applies to most trading partners — the standard "normal trade relations" rate. |
| Special rate (Column 1) | —Trade programs The country letters in parentheses are free trade agreement and preference programs. If your goods qualify under one of them, that rate replaces the general rate. |
| Column 2 rate | —Non-NTR Reserved for the small group of countries that do not have normal trade relations with the US (currently Cuba, North Korea, Russia and Belarus). Almost no importer uses this column — if you are shipping from anywhere else, ignore it. |
| Unit of quantity | — How CBP expects the quantity to be reported on the entry summary. |
Codes within Sulfates; alums; peroxosulfates (persulfates)
27 more specific lines fall under 2833.
- 2833.11Disodium sulfate6-digit headingSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates:
- 2833.11.10.00Salt cake10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates: > Disodium sulfate:Free
- 2833.11.50Other8-digit subheadingSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates: > Disodium sulfate:0.4%
- 2833.11.50.10Anhydrous10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates: > Disodium sulfate: > Other
- 2833.11.50.50Other10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates: > Disodium sulfate: > Other
- 2833.19.00.00Other10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Sodium sulfates:Free
- 2833.21.00.00Of magnesium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates:3.7%
- 2833.22.00.00Of aluminum10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates:Free
- 2833.24.00.00Of nickel10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates:3.2%
- 2833.25.00.00Of copper10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates:1.4%
- 2833.27.00.00Of barium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates:0.6%
- 2833.29Other6-digit headingSulfates; alums; peroxosulfates (persulfates): > Other sulfates:
- 2833.29.10.00Of cobalt10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:1.4%
- 2833.29.20.00Of iron10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:Free
- 2833.29.30.00Of vanadium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:5.5%
- 2833.29.40.00Of chromium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:3.7%
- 2833.29.45.00Of zinc10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:1.6%
- 2833.29.51Other8-digit subheadingSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other:3.7%
- 2833.29.51.10Of manganese10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other: > Other
- 2833.29.51.90Other10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Other sulfates: > Other: > Other
- 2833.30.00.00Alums10-digit statistical codeSulfates; alums; peroxosulfates (persulfates):1.6%
- 2833.40Peroxosulfates (persulfates)6-digit headingSulfates; alums; peroxosulfates (persulfates):
- 2833.40.20.00Of sodium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Peroxosulfates (persulfates):3.7%
- 2833.40.60Other8-digit subheadingSulfates; alums; peroxosulfates (persulfates): > Peroxosulfates (persulfates):3.1%
- 2833.40.60.10Of potassium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Peroxosulfates (persulfates): > Other
- 2833.40.60.20Of ammonium10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Peroxosulfates (persulfates): > Other
- 2833.40.60.50Other10-digit statistical codeSulfates; alums; peroxosulfates (persulfates): > Peroxosulfates (persulfates): > Other
Chapter 28: Inorganic Chemicals; Compounds of Precious Metals and Rare-Earths
Browse every code in this chapter to compare neighbouring classifications.
View Chapter 28Source: USITC Harmonized Tariff Schedule, 2026 Basic Edition, Revision 16. Rate text is reproduced verbatim from the official export; category paths and duty estimates are derived.
Data loaded August 18, 2026.Check this chapter on hts.usitc.govReport an error with this codeHow this data is built