Heading 2833
HTS code 2833 — Sulfates; alums; peroxosulfates (persulfates)
- Chapter
- 28 — Inorganic chemicals
- Tariff lines
- 21
- General duty
- General duty rates from 0.4% to 5.5%, with 4 duty-free lines
Tariff lines under heading 2833
Full 10-digit codes with their general (MFN) duty rates. The correct line depends on the product's material, construction, and use.
| HTS code | Description | General rate | Unit |
|---|---|---|---|
| 2833.11.1000 | Salt cake (Sulfates; alums; peroxosulfates (persulfates) > Sodium sulfates > Disodium sulfate) | Free | t |
| 2833.11.5010 | Anhydrous (Sulfates; alums; peroxosulfates (persulfates) > Sodium sulfates > Disodium sulfate > Other) | 0.4% | t |
| 2833.11.5050 | Other (Sulfates; alums; peroxosulfates (persulfates) > Sodium sulfates > Disodium sulfate > Other) | 0.4% | t |
| 2833.19.0000 | Other (Sulfates; alums; peroxosulfates (persulfates) > Sodium sulfates) | Free | kg |
| 2833.21.0000 | Of magnesium (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates) | 3.7% | kg |
| 2833.22.0000 | Of aluminum (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates) | Free | kg |
| 2833.24.0000 | Of nickel (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates) | 3.2% | kg |
| 2833.25.0000 | Of copper (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates) | 1.4% | kg, Cu kg |
| 2833.27.0000 | Of barium (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates) | 0.6% | kg |
| 2833.29.1000 | Of cobalt (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other) | 1.4% | kg |
| 2833.29.2000 | Of iron (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other) | Free | kg |
| 2833.29.3000 | Of vanadium (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other) | 5.5% | kg, V kg |
| 2833.29.4000 | Of chromium (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other) | 3.7% | kg |
| 2833.29.4500 | Of zinc (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other) | 1.6% | kg |
| 2833.29.5110 | Of manganese (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other > Other) | 3.7% | kg |
| 2833.29.5190 | Other (Sulfates; alums; peroxosulfates (persulfates) > Other sulfates > Other > Other) | 3.7% | kg |
| 2833.30.0000 | Alums (Sulfates; alums; peroxosulfates (persulfates)) | 1.6% | kg |
| 2833.40.2000 | Of sodium (Sulfates; alums; peroxosulfates (persulfates) > Peroxosulfates (persulfates)) | 3.7% | kg |
| 2833.40.6010 | Of potassium (Sulfates; alums; peroxosulfates (persulfates) > Peroxosulfates (persulfates) > Other) | 3.1% | kg |
| 2833.40.6020 | Of ammonium (Sulfates; alums; peroxosulfates (persulfates) > Peroxosulfates (persulfates) > Other) | 3.1% | kg |
| 2833.40.6050 | Other (Sulfates; alums; peroxosulfates (persulfates) > Peroxosulfates (persulfates) > Other) | 3.1% | kg |
Documents required to import under 2833
Customs paperwork typically required to import these goods into the United States. Conditional items depend on shipment value, transport mode, or origin.
- Commercial InvoiceRequired
- Packing ListRequired
- Bill of Lading / Airway BillRequired
- CBP Entry Summary (7501)Required
Prepared and filed by your customs broker
- CBP Entry / Release (3461)Required
Prepared and filed by your customs broker
- Customs Bond (CBP 301)Conditional
Required for formal entries — generally shipments valued over $2,500
Single-entry or continuous bond, obtained through your broker or a surety
- Importer Security Filing (ISF "10+2")Conditional
Required for ocean freight only
Filed electronically at least 24 hours before loading at the foreign port
- Importer ID Input Record (CBP 5106)Conditional
Required to establish or update your importer-of-record number with CBP
One-time setup for a new importer; not filed per shipment
- Entry Manifest (CBP 7533)Conditional
Alternative to the 3461 for informal, low-value, or contiguous-country entries
- Safety Data Sheet (SDS/MSDS)Required
- EPA TSCA CertificationConditional
Required for chemical substances regulated under TSCA
- EPA Notice of Arrival (Form 3540-1)Conditional
Required for pesticides and devices (typically Ch. 38)
Common questions
- What is HTS code 2833?
- HTS heading 2833 covers sulfates; alums; peroxosulfates (persulfates). It sits in Chapter 28 (inorganic chemicals) of the US Harmonized Tariff Schedule and contains 21 tariff lines.
- What is the duty rate for HTS 2833?
- General duty rates from 0.4% to 5.5%, with 4 duty-free lines. The general rate applies to most-favoured-nation trading partners; goods from countries with a free trade agreement may qualify for a reduced or duty-free special rate.
- How many digits does a full HTS code have?
- US import entries require the full 10-digit HTS code. Heading 2833 is the first four digits — the remaining six narrow it down to the specific product, which is what determines the duty rate you actually pay.
Related headings in Chapter 28
- 2801Fluorine, chlorine, bromine and iodine
- 2802Sulfur, sublimed or precipitated; colloidal sulfur
- 2803Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)
- 2804Hydrogen, rare gases and other nonmetals
- 2805Alkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury
- 2806Hydrogen chloride (Hydrochloric acid); chlorosulfuric acid
- 2807Sulfuric acid; oleum
- 2808Nitric acid; sulfonitric acids