# United States tariff line 2929.90.50.30: N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts

> In the United States tariff, line 2929.90.50.30 covers N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts. The general (MFN) duty rate is 6.5%. It falls under HS subheading 2929.90 in heading 29.29 (chapter 29).

Source: https://border.bot/countries/united-states/hs-codes/2929905030
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) / [2929.90.50.30](https://border.bot/countries/united-states/hs-codes/2929905030)

## Key facts

- Tariff line: 2929.90.50.30
- Covers: N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts
- Duty (MFN): 6.5%
- Preferential rates: From free (17 programmes or origins)
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2929.90](https://border.bot/hs-codes/292990)

## What this line covers

In the United States tariff, line 2929.90.50.30 covers N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts.

Its legal text is “N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts”, read under “Other”, “Other” and “Other”.

## How it is structured

It falls under HS subheading 2929.90 in heading 29.29 (chapter 29). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 29: Organic chemicals
- Heading 29.29: Compounds with other nitrogen function
- Subheading 2929.90: Other
- Within the subheading: Other
- Within the subheading: Other
- Line 2929.90.50.30: N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts

## Duty

The general (MFN) duty rate is 6.5%.

The rate is published on 2929.90.50.

Duty-free entry applies to goods that qualify under 16 programmes, and to goods from a group of origins (origin group A).

- Free: a group of origins (origin group A) (A)
- Free: United States-Australia Free Trade Agreement (AU)
- Free: United States-Bahrain Free Trade Agreement Implementation Act (BH)
- Free: United States-Chile Free Trade Agreement (CL)
- Free: United States-Colombia Trade Promotion Agreement Implementation Act (CO)
- Free: African Growth and Opportunity Act (D)
- Free: Caribbean Basin Economic Recovery Act (E)
- Free: United States-Israel Free Trade Area (IL)
- Free: United States-Jordan Free Trade Area Implementation Act (JO)
- Free: United States-Korea Free Trade Agreement Implementation Act (KR)
- Free: United States-Morocco Free Trade Agreement Implementation Act (MA)
- Free: United States-Oman Free Trade Agreement Implementation Act (OM)
- Free: Dominican Republic-Central America-United States Free Trade Agreement (P)
- Free: United States-Panama Trade Promotion Agreement Implementation Act (PA)
- Free: United States-Peru Trade Promotion Agreement Implementation Act (PE)
- Free: United States-Mexico-Canada Agreement (S)
- Free: United States-Singapore Free Trade Agreement (SG)

## 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)

## Other lines under 2929.90

- [2929.90.05.00](https://border.bot/countries/united-states/hs-codes/2929900500) 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](https://border.bot/countries/united-states/hs-codes/2929901500) Products described in additional U.S. note 3 to section VI
- [2929.90.20.00](https://border.bot/countries/united-states/hs-codes/2929902000) Other
- [2929.90.50.15](https://border.bot/countries/united-states/hs-codes/2929905015) N,N-Dimethylphosphoramidic dichloride
- [2929.90.50.18](https://border.bot/countries/united-states/hs-codes/2929905018) Other
- [2929.90.50.20](https://border.bot/countries/united-states/hs-codes/2929905020) Dialkyl (methyl, ethyl, n-propyl or isopropyl)-N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidates
- [2929.90.50.40](https://border.bot/countries/united-states/hs-codes/2929905040) 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
- [2929.90.50.95](https://border.bot/countries/united-states/hs-codes/2929905095) Other

- Previous line: [2929.90.50.20](https://border.bot/countries/united-states/hs-codes/2929905020) Dialkyl (methyl, ethyl, n-propyl or isopropyl)-N,N-dialkyl (methyl, ethyl, n-propyl or isopropyl) phosphoramidates
- Next line: [2929.90.50.40](https://border.bot/countries/united-states/hs-codes/2929905040) 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

## Frequently asked questions

### What does tariff line 2929.90.50.30 cover in the United States tariff?

In the United States tariff, line 2929.90.50.30 covers N-(Dialkyl (≤C10, incl. cycloalkyl) amino))alkylidene (H or ≤C10, incl. cycloalkyl) phosphonamidic fluorides and corresponding alkylated or protonated salts.

### What is the general (MFN) duty on 2929.90.50.30 in the United States?

The general (MFN) duty rate is 6.5%. The rate is published on 2929.90.50.

### Which preferential rates apply to 2929.90.50.30?

Duty-free entry applies to goods that qualify under 16 programmes: the United States-Australia Free Trade Agreement, the United States-Bahrain Free Trade Agreement Implementation Act, the United States-Chile Free Trade Agreement, the United States-Colombia Trade Promotion Agreement Implementation Act, African Growth and Opportunity Act, Caribbean Basin Economic Recovery Act, the United States-Israel Free Trade Area, the United States-Jordan Free Trade Area Implementation Act, the United States-Korea Free Trade Agreement Implementation Act, the United States-Morocco Free Trade Agreement Implementation Act, the United States-Oman Free Trade Agreement Implementation Act, the Dominican Republic-Central America-United States Free Trade Agreement, the United States-Panama Trade Promotion Agreement Implementation Act, the United States-Peru Trade Promotion Agreement Implementation Act, the United States-Mexico-Canada Agreement and the United States-Singapore Free Trade Agreement, and to goods from a group of origins (origin group A).

## 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/2929905030.json