HS code 283329: Sulphates
- Covers:
- Sulphates; alums; peroxosulphates (persulphates) not listed under the other codes in this heading.
- Not covered:
- 283311 (Sodium sulphates — Disodium sulphate); 283319 (Sodium sulphates — Other); 283321 (Other sulphates — Of magnesium); and others.
- Listed US duty:
- 0%–5.5% (US general rate, HTS 2026)
Official description
Sulphates; alums; peroxosulphates (persulphates) : Other sulphates : Other
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Suggestions from the HS index, not a customs ruling
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What 283329 covers and what it doesn’t
Official text: Sulphates; alums; peroxosulphates (persulphates) › Other sulphates › Other.
This is the “other” line of heading 2833 (sulphates; alums; peroxosulphates (persulphates)). It takes goods of that heading that no more specific subheading names. These go elsewhere:
Nearby codes to check
- Heading 2833 Sulphates; alums; peroxosulphates (persulphates): every subheading side by side.
US duty rate
0%–5.5%
General (MFN) rate in the US Harmonized Tariff Schedule, 2026 edition. A range means the rate depends on the 8-digit US line your product falls under. Extra duties such as Section 301, Section 232 or anti-dumping orders can apply on top, depending on origin. Check the lines on hts.usitc.gov. Not legal advice.
Who imports under 283329
EximAgent lists companies with recorded shipments under this code, built from customs records, with who they buy from and how often. See importers of 283329 →
Common questions
- What is HS code 283329?
- Sulphates; alums; peroxosulphates (persulphates) : Other sulphates : Other
- What duty rates apply to 283329?
- Listed US duty: 0%–5.5% (US general rate, HTS 2026).
Go beyond the code
Classify a product and check the duty for your destination with the CLI, then keep researching in your own agent.