Analysis
Subheading 2841.90 covers other, within heading 2841. The first six digits are shared by every country that uses the Harmonized System, so this part of the code is the same in the US, UK and EU schedules; the 6 US tariff lines below it are national.
None of its 6 lines is duty-free at the general rate. Rates run from 3.1% to 5.5% with a median of 3.4000000000000004%, so the line you choose sets the duty.
The US splits it as follows: 2841.90.10 for other: vanadates (5.5%), 2841.90.20 for ammonium perrhenate (3.1%), 2841.90.30 for potassium stannate (3.1%), 2841.90.40 for other: aluminates (3.1%), 2841.90.45 for chromates of zinc or of lead (3.7%) and 2841.90.50 for other: other (3.7%).
By Census's concordance, most of its statistical lines are made by Other Basic Inorganic Chemical Manufacturing (325180) and Synthetic Dye and Pigment Manufacturing (325130). Those are the NAICS industries a US producer of these goods would report under.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2841.90.10 | Other: vanadates | 5.5% |
| 2841.90.20 | Ammonium perrhenate | 3.1% |
| 2841.90.30 | Potassium stannate | 3.1% |
| 2841.90.40 | Other: aluminates | 3.1% |
| 2841.90.45 | Chromates of zinc or of lead | 3.7% |
| 2841.90.50 | Other: other | 3.7% |