# United States tariff lines under HS 2903.42

> The United States tariff splits HS 2903.42 (saturated fluorinated derivatives of acyclic hydrocarbons: Difluoromethane (HFC-32)) into 1 national line: 2903.42.10.00 (difluoromethane (HFC-32)). The general (MFN) duty is 3.7% on this line.

Source: https://border.bot/countries/united-states/hs-codes/290342
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) / [2903.42](https://border.bot/countries/united-states/hs-codes/290342)

## Key facts

- HS subheading: [2903.42](https://border.bot/hs-codes/290342)
- Duty (MFN): 3.7%
- National lines: 1
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 29: Organic chemicals

## United States lines under 2903.42

The United States tariff splits HS 2903.42 (saturated fluorinated derivatives of acyclic hydrocarbons: Difluoromethane (HFC-32)) into 1 national line: 2903.42.10.00 (difluoromethane (HFC-32)).

The general (MFN) duty is 3.7% on this line.

- [2903.42.10.00](https://border.bot/countries/united-states/hs-codes/2903421000) Saturated fluorinated derivatives of acyclic hydrocarbons, Difluoromethane (HFC-32). Duty (MFN): 3.7%

## In other countries

No other national tariff on border.bot has live lines under 2903.42 yet.

- [The Harmonized System text for 2903.42](https://border.bot/hs-codes/290342)

- Previous subheading: [2903.41](https://border.bot/countries/united-states/hs-codes/290341) Halogenated derivatives of hydrocarbons
- Next subheading: [2903.43](https://border.bot/countries/united-states/hs-codes/290343) Halogenated derivatives of hydrocarbons

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2903.42?

The United States tariff splits HS 2903.42 (saturated fluorinated derivatives of acyclic hydrocarbons: Difluoromethane (HFC-32)) into 1 national line: 2903.42.10.00 (difluoromethane (HFC-32)).

### What is the duty on HS 2903.42 in the United States?

The general (MFN) duty is 3.7% on this line.

## 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/290342.json