# United States tariff lines under HS 2929.10

> The United States tariff splits HS 2929.10 (isocyanates) into 9 national lines: 2929.10.10.00 (toluenediisocyanates (unmixed)), 2929.10.15.00 (mixtures of 2,4- and 2,6-toluenediisocyanates), 2929.10.20.00 (bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate), 2929.10.27.00 (N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate) and 5 others.

Source: https://border.bot/countries/united-states/hs-codes/292910
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 29](https://border.bot/countries/united-states/hs-codes/29) / [2929.10](https://border.bot/countries/united-states/hs-codes/292910)

## Key facts

- HS subheading: [2929.10](https://border.bot/hs-codes/292910)
- National lines: 9
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2929.10

The United States tariff splits HS 2929.10 (isocyanates) into 9 national lines: 2929.10.10.00 (toluenediisocyanates (unmixed)), 2929.10.15.00 (mixtures of 2,4- and 2,6-toluenediisocyanates), 2929.10.20.00 (bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate), 2929.10.27.00 (N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate) and 5 others.

- [2929.10.10.00](https://border.bot/countries/united-states/hs-codes/2929101000) Isocyanates, Toluenediisocyanates (unmixed). Duty (MFN): 6.5%
- [2929.10.15.00](https://border.bot/countries/united-states/hs-codes/2929101500) Isocyanates, Mixtures of 2,4- and 2,6-toluenediisocyanates. Duty (MFN): 6.5%
- [2929.10.20.00](https://border.bot/countries/united-states/hs-codes/2929102000) Isocyanates, Bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate. Duty (MFN): 5.8%
- [2929.10.27.00](https://border.bot/countries/united-states/hs-codes/2929102700) Isocyanates, N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate. Duty (MFN): free
- [2929.10.30.00](https://border.bot/countries/united-states/hs-codes/2929103000) Isocyanates, 3,4-Dichlorophenylisocyanate. Duty (MFN): 6.5%
- [2929.10.35.00](https://border.bot/countries/united-states/hs-codes/2929103500) Isocyanates, 1,6-Hexamethylene diisocyanate. Duty (MFN): 6.5%
- [2929.10.55.00](https://border.bot/countries/united-states/hs-codes/2929105500) Isocyanates, Other, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2929.10.80.10](https://border.bot/countries/united-states/hs-codes/2929108010) Isocyanates, Other, Other, Methylenedi-p-phenylene isocyanate (MDI). Duty (MFN): 6.5%
- [2929.10.80.90](https://border.bot/countries/united-states/hs-codes/2929108090) Isocyanates, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2929.10 yet.

- [The Harmonized System text for 2929.10](https://border.bot/hs-codes/292910)

- Previous subheading: [2928.00](https://border.bot/countries/united-states/hs-codes/292800) Organic derivatives of hydrazine or of hydroxylamine
- Next subheading: [2929.90](https://border.bot/countries/united-states/hs-codes/292990) Other

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2929.10?

The United States tariff splits HS 2929.10 (isocyanates) into 9 national lines: 2929.10.10.00 (toluenediisocyanates (unmixed)), 2929.10.15.00 (mixtures of 2,4- and 2,6-toluenediisocyanates), 2929.10.20.00 (bitolylene diisocyanate (TODI);o-Isocyanic acid, o-tolyl ester; and Xylene diisocyanate), 2929.10.27.00 (N-Butylisocyanate; Cyclohexyl isocyanate; 1-Isocyanato-3-(trifluoromethyl) benzene; 1,5-Naphthalene diisocyanate; and Octadecyl isocyanate) and 5 others.

## 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:

- https://hts.usitc.gov/reststop/exportList?from=0000000000&to=9999999999&format=CSV&styles=false

Machine-readable: https://border.bot/countries/united-states/hs-codes/292910.json