Key facts
- HS subheading
- 3810.90
- National lines
- 3
- Tariff
- United States
- Chapter
- 38: Miscellaneous chemical products
Summary
The United States tariff splits HS 3810.90 (pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods) into 3 national lines: 3810.90.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3810.90.20.00 (consisting wholly of inorganic substances) and 3810.90.50.00 (other). The general (MFN) duty differs by line: 6.5% on 3810.90.10.00, free on 3810.90.20.00 and 5% on 3810.90.50.00.
United States lines under 3810.90
The United States tariff splits HS 3810.90 (pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods) into 3 national lines: 3810.90.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3810.90.20.00 (consisting wholly of inorganic substances) and 3810.90.50.00 (other).
The general (MFN) duty differs by line: 6.5% on 3810.90.10.00, free on 3810.90.20.00 and 5% on 3810.90.50.00.
- 3810.90.10.00Containing 5 percent or more by weight of one or more aromatic or modified aromatic substancesDuty: 6.5%
- 3810.90.20.00Consisting wholly of inorganic substancesDuty: Free
- 3810.90.50.00OtherDuty: 5%
In other countries
No other national tariff on border.bot has live lines under 3810.90 yet.
Frequently asked questions
How many national tariff lines does the United States tariff have under HS 3810.90?
The United States tariff splits HS 3810.90 (pickling preparations for metal surfaces; fluxes and other auxiliary preparations for soldering, brazing or welding; soldering, brazing or welding powders and pastes consisting of metal and other materials; preparations of a kind used as cores or coatings for welding electrodes or rods) into 3 national lines: 3810.90.10.00 (containing 5 percent or more by weight of one or more aromatic or modified aromatic substances), 3810.90.20.00 (consisting wholly of inorganic substances) and 3810.90.50.00 (other).
What is the duty on HS 3810.90 in the United States?
The general (MFN) duty differs by line: 6.5% on 3810.90.10.00, free on 3810.90.20.00 and 5% on 3810.90.50.00.
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: