Analysis
Heading 2830 of the Harmonized Tariff Schedule covers sulfides; polysulfides, whether or not chemically defined. It divides into 2 six-digit subheadings and 5 eight-digit tariff lines, with 5 ten-digit statistical suffixes below them.
1 of its 5 lines with a percentage rate are duty-free at the general rate (20%) and 4 are dutiable, from duty-free up to 3.7%. The median line pays 3%.
The largest subheadings are 2830.90 (other, 4 lines) and 2830.10 (unnamed, 1 line).
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.
Its median rate of 3% sits at the 46th percentile of the headings in chapter 28.
The heading text decides whether a product belongs here at all (General Rule of Interpretation 1); the subheadings and lines below it only apply once that is settled. Section and chapter notes can override the heading wording, so read them for borderline goods.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2830.10.00 | Sulfides; polysulfides, whether or not chemically defined: sodium sulfides | 3.7% |
| 2830.90.10 | Zinc sulfide, luminescent grade having a purity of 99.99 percent or more by weight | Free |
| 2830.90.15 | Other: other zinc sulfide | 2.8% |
| 2830.90.20 | Other: cadmium sulfide | 3.1% |
| 2830.90.90 | Other: other | 3% |