# United States tariff lines under HS 2929.90

> The United States tariff splits HS 2929.90 (compounds with other nitrogen function) into 9 national lines: 2929.90.05.00 (2,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoro- propane; 2,2-Bis((4-cyanatophenyl) propane; 1,1-Ethylidenebis (phenyl-4-cyanate); 4,4'-Methylene bis(2,6-dimethylphenylcyanate); and 1,3-Phenylenebis (1-methylethylidenebis) cyanic acid, 1,4-phenylene ester), 2929.90.15.00 (products described in additional U.S. note 3 to section VI), 2929.90.20.00 (other), 2929.90.50.15 (N,N-Dimethylphosphoramidic dichloride) and 5 others.

Source: https://border.bot/countries/united-states/hs-codes/292990
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) / [2929.90](https://border.bot/countries/united-states/hs-codes/292990)

## Key facts

- HS subheading: [2929.90](https://border.bot/hs-codes/292990)
- National lines: 9
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2929.90

The United States tariff splits HS 2929.90 (compounds with other nitrogen function) into 9 national lines: 2929.90.05.00 (2,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoro- propane; 2,2-Bis((4-cyanatophenyl) propane; 1,1-Ethylidenebis (phenyl-4-cyanate); 4,4'-Methylene bis(2,6-dimethylphenylcyanate); and 1,3-Phenylenebis (1-methylethylidenebis) cyanic acid, 1,4-phenylene ester), 2929.90.15.00 (products described in additional U.S. note 3 to section VI), 2929.90.20.00 (other), 2929.90.50.15 (N,N-Dimethylphosphoramidic dichloride) and 5 others.

- [2929.90.05.00](https://border.bot/countries/united-states/hs-codes/2929900500) Other, 2,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoro- propane; 2,2-Bis((4-cyanatophenyl) propane; 1,1-Ethylidenebis (phenyl-4-cyanate); 4,4'-Methylene bis(2,6-dimethylphenylcyanate); and 1,3-Phenylenebis (1-methylethylidenebis) cyanic acid, 1,4-phenylene ester. Duty (MFN): free
- [2929.90.15.00](https://border.bot/countries/united-states/hs-codes/2929901500) Other, Other, Aromatic, Products described in additional U.S. note 3 to section VI. Duty (MFN): 6.5%
- [2929.90.20.00](https://border.bot/countries/united-states/hs-codes/2929902000) Other, Other, Aromatic, Other. Duty (MFN): 6.5%
- [2929.90.50.15](https://border.bot/countries/united-states/hs-codes/2929905015) Other, Other, Other, N,N-Dialkyl (methyl, ethyl,n-propyl or isopropyl) phosphoramidic dihalides, N,N-Dimethylphosphoramidic dichloride. Duty (MFN): 6.5%
- [2929.90.50.18](https://border.bot/countries/united-states/hs-codes/2929905018) Other, Other, Other, N,N-Dialkyl (methyl, ethyl,n-propyl or isopropyl) phosphoramidic dihalides, Other. Duty (MFN): 6.5%
- [2929.90.50.20](https://border.bot/countries/united-states/hs-codes/2929905020) Other, Other, Other, Dialkyl (methyl, ethyl, n-propyl or isopropyl)-N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidates. Duty (MFN): 6.5%
- [2929.90.50.30](https://border.bot/countries/united-states/hs-codes/2929905030) Other, Other, Other, N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts. Duty (MFN): 6.5%
- [2929.90.50.40](https://border.bot/countries/united-states/hs-codes/2929905040) Other, Other, Other, O-Alkyl (H or ≤C10, incl. cycloalkyl) N-(dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphoramidofluoridates and corresponding alkylated or protonated salts. Duty (MFN): 6.5%
- [2929.90.50.95](https://border.bot/countries/united-states/hs-codes/2929905095) Other, Other, Other, Other. Duty (MFN): 6.5%

## In other countries

No other national tariff on border.bot has live lines under 2929.90 yet.

- [The Harmonized System text for 2929.90](https://border.bot/hs-codes/292990)

- Previous subheading: [2929.10](https://border.bot/countries/united-states/hs-codes/292910) Isocyanates
- Next subheading: [2930.10](https://border.bot/countries/united-states/hs-codes/293010) Organo-sulfur compounds

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2929.90?

The United States tariff splits HS 2929.90 (compounds with other nitrogen function) into 9 national lines: 2929.90.05.00 (2,2'-Bis(4-cyanatophenyl)-1,1,1,3,3,3-hexafluoro- propane; 2,2-Bis((4-cyanatophenyl) propane; 1,1-Ethylidenebis (phenyl-4-cyanate); 4,4'-Methylene bis(2,6-dimethylphenylcyanate); and 1,3-Phenylenebis (1-methylethylidenebis) cyanic acid, 1,4-phenylene ester), 2929.90.15.00 (products described in additional U.S. note 3 to section VI), 2929.90.20.00 (other), 2929.90.50.15 (N,N-Dimethylphosphoramidic dichloride) 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/292990.json