Analysis
Subheading 2917.12 covers adipic acid, its salts and esters, within heading 2917. 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 3 US tariff lines below it are national.
None of its 3 lines is duty-free at the general rate. Rates run from 6.5% to 6.5% with a median of 6.5%, so the line you choose sets the duty.
The US splits it as follows: 2917.12.10 for adipic acid, its salts and esters: adipic acid (6.5%), 2917.12.20 for other: plasticizers (6.5%) and 2917.12.50 for other: other (6.5%).
By Census's concordance, most of its statistical lines are made by All Other Basic Organic Chemical Manufacturing (325199). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 2917.12 once they fall within heading 2917 (polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their…). Under General Rule 6, subheadings are then compared only with others at the same level, so a product is matched against its siblings, not against lines elsewhere in the chapter.
Tariff lines
| Line | Description | General rate |
|---|---|---|
| 2917.12.10 | Adipic acid, its salts and esters: adipic acid | 6.5% |
| 2917.12.20 | Other: plasticizers | 6.5% |
| 2917.12.50 | Other: other | 6.5% |