What is the US duty on pyridine from China?
The USITC extract imported on 25 September 2026 stores a general rate of Free on HTS 2933.31.00.00, described as Pyridine and its salts. The other rate on that line is also Free. The special rate is blank.
There is no footnote on that line. Heading 2933 stores no rate. Additional duties on the pyridine line are blank, so this file does not store a Section 301 percent. The anti-dumping file dated 16 May 2026 stores heading 2933 on melamine and on chlorinated isocyanurates, not on pyridine, and stores no cash-deposit percent on those rows. This page is the United States file only. It does not state an Australian duty or a ChAFTA percent.
Rate stored on the pyridine line
Source: USITC Harmonized Tariff Schedule export, updated_at 2026-09-25T11:27:06.251Z, from hts.usitc.gov exportList chapters 28 to 39. The public schedule is at hts.usitc.gov. The file uses one line for pyridine and its salts. HTS 2933.31.00.00 stores the unit kg. It has no statistical suffix. There is no footnote. The special rate is blank.
| HTS | Description | General rate | Additional duties |
|---|---|---|---|
| 2933 | Heterocyclic compounds with nitrogen hetero-atom(s) only | blank | blank |
| 2933.31.00.00 | Pyridine and its salts | Free | blank |
| 2933.32 | Piperidine and its salts | blank | blank |
| 2933.32.10.00 | Piperidine | 6.5% | blank |
The other column is not shown. It does not apply to goods of China.
This page does not treat Free as a China total. HTS 2933.39.20.00 stores 5.8 percent general and an other rate of 15.4 cents per kg plus 39.5 percent. That description is a list of other compounds, including 2-methyl-5-ethylpyridine. It is not the pyridine line, and Free is not copied onto it. The file does not use the words 3-methylpyridine. Confirm the line on hts.usitc.gov before you quote. Section 301 stays on the USTR Section 301 page.
The anti-dumping file, updated_at 2026-05-16T23:32:23.566Z, lists A-570-020 and C-570-021, product Melamine, heading 2933, and A-570-898, product Chlorinated isocyanurates, heading 2933. None of those product texts say pyridine. All three rows set duty_rate_percent to null. The melamine answer is on US duty on melamine from China. The chlorinated isocyanurates answer is on US duty on trichloroisocyanuric acid from China. Check ACCESS before you treat that gap as a clearance.
A list of codes, three free and up to 50 on Pro, is on the China duty list. Subscribe for the longer list and the copyable report. A rate there is shown only when the file stores it.
Frequently asked
What is the US duty on pyridine from China?
The USITC extract imported on 25 September 2026 stores a general rate of Free on HTS 2933.31.00.00, described as Pyridine and its salts. The other rate on that line is also Free. The special rate is blank. There is no footnote. Additional duties are blank, so this file does not store a Section 301 percent.
Does Free mean the China total is zero?
No. This page does not treat Free as a China total. The special rate is blank, so it does not name a China program. Section 301 is not in this extract.
Do the heading 2933 anti-dumping rows cover pyridine?
The file stores three heading 2933 rows, and none of the product text is pyridine. A-570-020 and C-570-021 are melamine. A-570-898 is chlorinated isocyanurates. All three store no cash-deposit percent. A heading tag is not this product.
Is piperidine the same rate?
No. Piperidine, HTS 2933.32.10.00, stores 6.5 percent general and an other rate of 15.4 cents per kg plus 52 percent. HTS 2933.39.20.00 stores 5.8 percent general. Heading 2933 stores no rate. The file does not copy Free onto those lines. It also does not use the words 3-methylpyridine.
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Sourzi shows what official files say. It is not customs or legal advice. For a binding answer, ask a licensed customs broker, a CBP ruling or an Australian Border Force Tariff Advice.
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