Analysis
Subheading 3812.10 covers prepared rubber accelerators, within heading 3812. 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 2 US tariff lines below it are national.
None of its 2 lines is duty-free at the general rate. Rates run from 5% to 6.5% with a median of 5.75%, so the line you choose sets the duty.
The US splits it as follows: 3812.10.10 for containing any aromatic or modified aromatic rubber accelerator (6.5%) and 3812.10.50 for prepared rubber accelerators: other (5%).
By Census's concordance, most of its statistical lines are made by All Other Miscellaneous Chemical Product and Preparation Manufacturing (325998). Those are the NAICS industries a US producer of these goods would report under.
Goods only reach 3812.10 once they fall within heading 3812 (prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere…). 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 |
|---|---|---|
| 3812.10.10 | Containing any aromatic or modified aromatic rubber accelerator | 6.5% |
| 3812.10.50 | Prepared rubber accelerators: other | 5% |