HTS heading 2831: Dithionites and sulfoxylates
Heading 2831 of the US Harmonized Tariff Schedule covers Dithionites and sulfoxylates. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.
Heading 2831 at a glance
- 3 rated tariff lines; 1 duty-free at the general (MFN) rate.
- Ad valorem general rates from 5.5% to 5.5%.
- Section 301 (products of China): 3 of 3 lines on a list in effect (List 3).
Goods named in this heading (official line texts): Sodium formaldehyde sulfoxylate.
Subheadings (6-digit)
All tariff lines in heading 2831
| Line | Description | General | Section 301 (China) | Exclusions |
|---|---|---|---|---|
| 2831.10.10 | Sodium formaldehyde sulfoxylate | Free | List 3 +25% | |
| 2831.10.50 | Of sodium: Other | 5.5% | List 3 +25% | |
| 2831.90.00 | Dithionites and sulfoxylates: Other | 5.5% | List 3 +25% |
All of chapter 28 · Chapter 28 rate summary · HTS lookup
General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.
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