2931.53.00.00O- O-[4-nitro-3-phenyl] methylphosphonothionate
Also written 2931530000 and 2931.53.0000
HTS Code 2931.53.00.00 covers any article best defined as Products of the Chemical or Allied IndustriesOrganic chemicalsOther organo-inorganic compounds:Halogenated organo-phosphorous derivatives:O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate in the Harmonized Tariff Schedule.
As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from China pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%).
From China, the total duty on 2931.53.00.00 last changed on Jul 24, 2026, from 3.7% to 16.2%. It has changed 2 times since Nov 17, 2025.
Estimated Duty on 2931.53.00.00
$10,000.00 by ocean, entered Nov 9, 2026
- Total duty
- 16.2%
- $1,620.00 on this shipment
- Fees
- 0.47%
- MPF + HMF · $47.14
- Duty + fees
- 16.67%
- Payable to CBP
- Landed cost
- $11,667.14
- On $10,000.00 customs value
- Base duty3.7%
- Section 301 – Forced Labor12.5%
- Customs fees0.47%
Chapter 99 lines9903.05.31Section 301 Forced Labor – China
6 exemptions could lower this
So could Pharmaceutical products and related appendix. Check them against your real shipment details.
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Base Duty Rates for 2931.53.00.00
From the Harmonized Tariff Schedule
- General Rate of Duty
- 3.7%
- Special Rate of Duty
- Free
- AAUBHCLCODEILJOKKRMAOMPPAPESSG
- Column 2 (Non-NTR)
- 25%
- Units of Quantity
- kg
- China16.2%
- Mexico13.7%
- Canada13.7%
- Vietnam16.2%
- Germany10%
Tariff updates
Recent US tariff actions that name 2931.53.00.00 or its heading.
- Oct 16, 2026 · CBP guidanceCBP issues HSU 2625 with Section 232 pharmaceutical updates and CPSC flag changes
- Sep 23, 2026 · PublishedCommerce defines specialty drugs and lists jurisdictions eligible for 0% Section 232 pharma tariff
- Jul 21, 2026 · CBP guidanceUSTR imposes 25% Section 301 tariff on goods of Brazil, with exemptions, from July 22, 2026
- Dec 18, 2025 · PublishedUS cuts reciprocal tariff on Swiss and Liechtenstein goods to 15% all-in, exempts certain products
- Nov 25, 2025 · CBP guidanceUS exempts certain agricultural products from IEEPA reciprocal tariffs
US Import Duty on HTS 2931.53.00.00 by Country of Origin
As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from China pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%). Of the 20 largest sources of US imports, the lowest total is 10%, from Germany, Taiwan and 3 more.
| Country of origin | Base rate | Additional tariffs | Total duty |
|---|---|---|---|
| China | 3.7% |
| 16.2%12.5% with Pharmaceutical products and related appendix |
| Mexico | 3.7% |
| 13.7%0% with USMCA |
| Canada | 3.7% |
| 13.7%0% with USMCA |
| Vietnam | 3.7% |
| 16.2%12.5% with Pharmaceutical products and related appendix |
| Germany | 3.7% |
| 10%10% with Pharmaceutical products and related appendix |
| Japan | 3.7% |
| 12.5% |
| South Korea | 3.7% |
| 12.5% |
| Taiwan | 3.7% |
| 10%10% with Pharmaceutical products and related appendix |
| India | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
| Ireland | 3.7% |
| 10%10% with Pharmaceutical products and related appendix |
| Italy | 3.7% |
| 10%10% with Pharmaceutical products and related appendix |
| Switzerland | 3.7% |
| 12.5% |
| Thailand | 3.7% |
| 16.2%12.5% with Pharmaceutical products and related appendix |
| Malaysia | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
| United Kingdom | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
| France | 3.7% |
| 10%10% with Pharmaceutical products and related appendix |
| Indonesia | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
| Brazil | 3.7% |
| 41.2%37.5% with Pharmaceutical products and related appendix |
| Bangladesh | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
| Cambodia | 3.7% |
| 13.7%10% with Pharmaceutical products and related appendix |
Duty from each country, in words
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from China pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Mexico pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Canada pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With USMCA, qualifying goods pay 0%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Vietnam pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Germany pay 10% in duties: the 3.7% base rate plus Section 301 – Forced Labor (6.3%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Japan pay 12.5% in duties: the 3.7% base rate plus Section 301 – Forced Labor (8.8%).
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from South Korea pay 12.5% in duties: the 3.7% base rate plus Section 301 – Forced Labor (8.8%).
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Taiwan pay 10% in duties: the 3.7% base rate plus Section 301 – Forced Labor (6.3%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from India pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Ireland pay 10% in duties: the 3.7% base rate plus Section 301 – Forced Labor (6.3%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Italy pay 10% in duties: the 3.7% base rate plus Section 301 – Forced Labor (6.3%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Switzerland pay 12.5% in duties: the 3.7% base rate plus Section 301 – Forced Labor (8.8%).
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Thailand pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 12.5%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Malaysia pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from United Kingdom pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from France pay 10% in duties: the 3.7% base rate plus Section 301 – Forced Labor (6.3%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Indonesia pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Brazil pay 41.2% in duties: the 3.7% base rate plus Section 301 – Brazil (25%) and Section 301 – Forced Labor (12.5%). With Pharmaceutical products and related appendix, qualifying goods pay 37.5%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Bangladesh pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
- As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Cambodia pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). With Pharmaceutical products and related appendix, qualifying goods pay 10%.
Duties on goods entered Nov 9, 2026 at the general rate (Column 2 where it applies), with tariff data verified through 2026 HTS Revision 20. Totals are before customs fees (MPF, HMF) and any antidumping or countervailing duties (AD/CVD); with a free account, the calculator checks the AD/CVD cases that may cover your import. Some tariffs and exemptions depend on details such as metal content or end use, which the calculator asks about. See US tariffs for every country.
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Relevant HTS Notes
Official USITC notes that may affect classification under HTS 2931.53.00.00.
Search CROSS Rulings for HTS 2931.53.00.00
See how Customs classified similar products. CBP's CROSS database holds the classification rulings that cite 2931.53.00.
Opens rulings.cbp.gov in a new tab.
What does HTS code 2931.53.00.00 cover?
HTS code 2931.53.00.00 covers O- O-[4-nitro-3-phenyl] methylphosphonothionate (O-(3-chloropropyl) O-[4-nitro-3-(trifluoromethyl)phenyl] methylphosphonothionate), classified under Chapter 29 (Organic chemicals) in the US Harmonized Tariff Schedule. The general duty rate is 3.7%.
What is the duty rate for HTS 2931.53.00.00?
The general (Column 1) rate of duty for HTS 2931.53.00.00 is 3.7%. Goods that qualify for a trade program can enter at the special rate: Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG). The Column 2 rate, for countries without normal trade relations, is 25%. Additional Chapter 99 tariffs, such as Section 301 and Section 232, can apply on top depending on the country of origin.
What is the US tariff on O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from China?
As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from China pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%).
What is the US tariff on O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Vietnam?
As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Vietnam pay 16.2% in duties: the 3.7% base rate plus Section 301 – Forced Labor (12.5%). Goods that qualify for Pharmaceutical products and related appendix pay 12.5%.
What is the US tariff on O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Mexico?
As of Nov 9, 2026, US imports of O- O-[4-nitro-3-phenyl] methylphosphonothionate (HTS 2931.53.00.00) from Mexico pay 13.7% in duties: the 3.7% base rate plus Section 301 – Forced Labor (10%). Goods that qualify for USMCA pay 0%.
Which country has the lowest US duty on HTS 2931.53.00.00?
Of the 20 largest sources of US imports, the lowest total duty on HTS 2931.53.00.00 is 10%, from Germany, Taiwan and 3 more, as of the tariffs in effect on 2026-11-09.
Primary Sources
The official documents behind the rates and tariffs on this page. Duties are worked out from them as of Revision 20 (2026); check the legal text before you file.
- USITCHarmonized Tariff Schedule of the United States: 2931.53.00.00, Revision 20 (2026)
- USITCHTS Chapter 29, with its notes (PDF)
- USITCHTS Section 6 notes, printed with Chapter 28 (PDF)
- Federal RegisterSection 301 – Forced Labor (9903.05.31 and 16 more): USTR, Notice of Actions in Section 301 Investigations (forced labor), 91 FR 47318
- Federal RegisterSection 301 – Brazil (9903.05.01): USTR notice, Notice of Action: Section 301 Investigation of Brazil's Acts, Policies, and Practices, 91 FR 45516 (FR Doc. 2026-14542)
- CBPCROSS classification rulings for 2931.53.00.00