Key facts
- HS subheading
- 2931.44
- Duty (MFN)
- 3.7%
- National lines
- 1
- Tariff
- United States
- Chapter
- 29: Organic chemicals
Summary
The United States tariff splits HS 2931.44 (non-halogenated organo-phosphorous derivatives: Methylphosphonic acid) into 1 national line: 2931.44.00.00 (methylphosphonic acid). The general (MFN) duty is 3.7% on this line.
United States lines under 2931.44
The United States tariff splits HS 2931.44 (non-halogenated organo-phosphorous derivatives: Methylphosphonic acid) into 1 national line: 2931.44.00.00 (methylphosphonic acid).
The general (MFN) duty is 3.7% on this line.
- 2931.44.00.00Methylphosphonic acidDuty: 3.7%
In other countries
No other national tariff on border.bot has live lines under 2931.44 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have under HS 2931.44?
The United States tariff splits HS 2931.44 (non-halogenated organo-phosphorous derivatives: Methylphosphonic acid) into 1 national line: 2931.44.00.00 (methylphosphonic acid).
What is the duty on HS 2931.44 in the United States?
The general (MFN) duty is 3.7% on this line.
Sources and updates
The tariff lines for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The duty rates for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
The trade programmes for the United States come from border.bot release 1 (edition 2026HTSRev21), read from the publisher’s files, and have been live since 9 October 2026.
This page was last updated on 9 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.
Official source files: