# United States tariff lines under HS 2918.30

> The United States tariff splits HS 2918.30 (carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives) into 7 national lines: 2918.30.10.00 (1-Formylphenylacetic acid, methyl ester), 2918.30.15.00 (2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate), 2918.30.25.10 (methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)), 2918.30.25.50 (other) and 3 others. The general (MFN) duty differs by line: 5.8% on 2918.30.10.00, free on 2918.30.15.00, 6.5% on 2918.30.25.10, 6.5% on 2918.30.25.50, 6.5% on 2918.30.30.00, free on 2918.30.70.00 and 3.7% on 2918.30.90.00.

Source: https://border.bot/countries/united-states/hs-codes/291830
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) / [2918.30](https://border.bot/countries/united-states/hs-codes/291830)

## Key facts

- HS subheading: [2918.30](https://border.bot/hs-codes/291830)
- National lines: 7
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2918.30

The United States tariff splits HS 2918.30 (carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives) into 7 national lines: 2918.30.10.00 (1-Formylphenylacetic acid, methyl ester), 2918.30.15.00 (2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate), 2918.30.25.10 (methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)), 2918.30.25.50 (other) and 3 others.

The general (MFN) duty differs by line: 5.8% on 2918.30.10.00, free on 2918.30.15.00, 6.5% on 2918.30.25.10, 6.5% on 2918.30.25.50, 6.5% on 2918.30.30.00, free on 2918.30.70.00 and 3.7% on 2918.30.90.00.

- [2918.30.10.00](https://border.bot/countries/united-states/hs-codes/2918301000) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Aromatic, 1-Formylphenylacetic acid, methyl ester. Duty (MFN): 5.8%
- [2918.30.15.00](https://border.bot/countries/united-states/hs-codes/2918301500) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Aromatic, 2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate. Duty (MFN): free
- [2918.30.25.10](https://border.bot/countries/united-states/hs-codes/2918302510) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Aromatic, Other, Products described in additional U.S. note 3 to section VI, Methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA). Duty (MFN): 6.5%
- [2918.30.25.50](https://border.bot/countries/united-states/hs-codes/2918302550) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Aromatic, Other, Products described in additional U.S. note 3 to section VI, Other. Duty (MFN): 6.5%
- [2918.30.30.00](https://border.bot/countries/united-states/hs-codes/2918303000) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Aromatic, Other, Other. Duty (MFN): 6.5%
- [2918.30.70.00](https://border.bot/countries/united-states/hs-codes/2918307000) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Dimethyl acetyl succinate; Oxalacetic acid diethyl ester, sodium salt; 4,4,4-Trifluoro-3-oxobutanoic acid, ethyl ester; and 4,4,4-Trifluoro-3-oxobutanoic acid, methyl ester. Duty (MFN): free
- [2918.30.90.00](https://border.bot/countries/united-states/hs-codes/2918309000) Carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Other, Other. Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2918.30 yet.

- [The Harmonized System text for 2918.30](https://border.bot/hs-codes/291830)

- Previous subheading: [2918.29](https://border.bot/countries/united-states/hs-codes/291829) Other
- Next subheading: [2918.91](https://border.bot/countries/united-states/hs-codes/291891) Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2918.30?

The United States tariff splits HS 2918.30 (carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives) into 7 national lines: 2918.30.10.00 (1-Formylphenylacetic acid, methyl ester), 2918.30.15.00 (2-Chloro-4,5-difluoro-ß-oxobenzenepropanoic acid, ethyl ester; and Ethyl 2-keto-4-phenylbutanoate), 2918.30.25.10 (methyl 3-oxo-2-phenylbutanoate (methyl alpha-phenylacetoacetate, MAPA)), 2918.30.25.50 (other) and 3 others.

### What is the duty on HS 2918.30 in the United States?

The general (MFN) duty differs by line: 5.8% on 2918.30.10.00, free on 2918.30.15.00, 6.5% on 2918.30.25.10, 6.5% on 2918.30.25.50, 6.5% on 2918.30.30.00, free on 2918.30.70.00 and 3.7% on 2918.30.90.00.

## 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:

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

Machine-readable: https://border.bot/countries/united-states/hs-codes/291830.json