# United States tariff lines under HS 2918.13

> The United States tariff splits HS 2918.13 (carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Salts and esters of tartaric acid) into 4 national lines: 2918.13.10.00 (potassium antimony tartrate (Tartar emetic)), 2918.13.20.00 (potassium bitartrate (Cream of tartar)), 2918.13.30.00 (potassium sodium tartrate (Rochelle salts)) and 2918.13.50.00 (other). The general (MFN) duty differs by line: free on 2918.13.10.00, free on 2918.13.20.00, free on 2918.13.30.00 and 4.4% on 2918.13.50.00.

Source: https://border.bot/countries/united-states/hs-codes/291813
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) / [2918.13](https://border.bot/countries/united-states/hs-codes/291813)

## Key facts

- HS subheading: [2918.13](https://border.bot/hs-codes/291813)
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2918.13

The United States tariff splits HS 2918.13 (carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Salts and esters of tartaric acid) into 4 national lines: 2918.13.10.00 (potassium antimony tartrate (Tartar emetic)), 2918.13.20.00 (potassium bitartrate (Cream of tartar)), 2918.13.30.00 (potassium sodium tartrate (Rochelle salts)) and 2918.13.50.00 (other).

The general (MFN) duty differs by line: free on 2918.13.10.00, free on 2918.13.20.00, free on 2918.13.30.00 and 4.4% on 2918.13.50.00.

- [2918.13.10.00](https://border.bot/countries/united-states/hs-codes/2918131000) Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of tartaric acid, Potassium antimony tartrate (Tartar emetic). Duty (MFN): free
- [2918.13.20.00](https://border.bot/countries/united-states/hs-codes/2918132000) Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of tartaric acid, Potassium bitartrate (Cream of tartar). Duty (MFN): free
- [2918.13.30.00](https://border.bot/countries/united-states/hs-codes/2918133000) Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of tartaric acid, Potassium sodium tartrate (Rochelle salts). Duty (MFN): free
- [2918.13.50.00](https://border.bot/countries/united-states/hs-codes/2918135000) Carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives, Salts and esters of tartaric acid, Other. Duty (MFN): 4.4%

## In other countries

No other national tariff on border.bot has live lines under 2918.13 yet.

- [The Harmonized System text for 2918.13](https://border.bot/hs-codes/291813)

- Previous subheading: [2918.12](https://border.bot/countries/united-states/hs-codes/291812) Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
- Next subheading: [2918.14](https://border.bot/countries/united-states/hs-codes/291814) 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 2918.13?

The United States tariff splits HS 2918.13 (carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives: Salts and esters of tartaric acid) into 4 national lines: 2918.13.10.00 (potassium antimony tartrate (Tartar emetic)), 2918.13.20.00 (potassium bitartrate (Cream of tartar)), 2918.13.30.00 (potassium sodium tartrate (Rochelle salts)) and 2918.13.50.00 (other).

### What is the duty on HS 2918.13 in the United States?

The general (MFN) duty differs by line: free on 2918.13.10.00, free on 2918.13.20.00, free on 2918.13.30.00 and 4.4% on 2918.13.50.00.

## 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:

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

Machine-readable: https://border.bot/countries/united-states/hs-codes/291813.json