Analysis
Heading 2833 of the Harmonized Tariff Schedule covers sulfates; alums; peroxosulfates (persulfates). It divides into 10 six-digit subheadings and 17 eight-digit tariff lines, with 21 ten-digit statistical suffixes below them.
4 of its 17 lines with a percentage rate are duty-free at the general rate (24%) and 13 are dutiable, from duty-free up to 5.5%. The median line pays 1.6%.
The spread of 5.5 percentage points between the cheapest and dearest lines makes misclassification expensive here. The highest rate, 5.5%, applies to 2833.29.30 (other: of vanadium).
The largest subheadings are 2833.29 (other, 6 lines), 2833.11 (disodium sulfate, 2 lines), 2833.40 (peroxosulfates (persulfates), 2 lines) and 2833.19 (unnamed, 1 line).
Its median rate of 1.6% sits at the 38th percentile of the headings in chapter 28.
By Census's concordance, most of its statistical lines are made by Other Basic Inorganic Chemical Manufacturing (325180). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2833.11.10 | Disodium sulfate: salt cake | Free |
| 2833.11.50 | Disodium sulfate: other | 0.4% |
| 2833.19.00 | Sodium sulfates: other | Free |
| 2833.21.00 | Other sulfates: of magnesium | 3.7% |
| 2833.22.00 | Other sulfates: of aluminum | Free |
| 2833.24.00 | Other sulfates: of nickel | 3.2% |
| 2833.25.00 | Other sulfates: of copper | 1.4% |
| 2833.27.00 | Other sulfates: of barium | 0.6% |
| 2833.29.10 | Other: of cobalt | 1.4% |
| 2833.29.20 | Other: of iron | Free |
| 2833.29.30 | Other: of vanadium | 5.5% |
| 2833.29.40 | Other: of chromium | 3.7% |
| 2833.29.45 | Other: of zinc | 1.6% |
| 2833.29.51 | Other: other | 3.7% |
| 2833.30.00 | Sulfates; alums; peroxosulfates (persulfates): alums | 1.6% |
| 2833.40.20 | Peroxosulfates (persulfates): of sodium | 3.7% |
| 2833.40.60 | Peroxosulfates (persulfates): other | 3.1% |