Analysis
HTS 2841.90.30 covers potassium stannate under heading 2841 (salts of oxometallic or peroxometallic acids).
Within this group the rate runs from 3.1% to 5.5%. Compared with 2841.90.10 (other: vanadates), which pays 5.5%, a misclassification either way moves the duty by 2.4 percentage points.
Goods that qualify under GSP, the Australia FTA, the Bahrain FTA, the Chile FTA, the Colombia TPA, and 12 others can enter duty-free instead of paying 3.1%. It is also eligible under GSP, the developing-country programme, which Congress has to renew; check whether GSP is in force on the entry date.
The general duty rate is 3.1% of the customs value, which is in the middle of the rates in chapter 28 (50th percentile of 274 lines with an ad valorem rate). On a shipment valued at $10,000 that is $310 in duty before any Chapter 99 additions or preference claims.
The column 2 rate, for countries without normal trade relations, is 25%, 8.1 times the general rate.
Census statistics map these goods to NAICS 325180 (Other Basic Inorganic Chemical Manufacturing), an industry of 705 US establishments employing 41,447 people. That concordance is how imports of this line are compared with US output.
Neighbouring lines
| Line | Description | General rate |
|---|---|---|
| 2841.90.10 | Other: vanadates | 5.5% |
| 2841.90.20 | Ammonium perrhenate | 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% |