# United States tariff lines under HS 2853.90

> The United States tariff splits HS 2853.90 (phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals) into 4 national lines: 2853.90.10.00 (of copper (phosphor copper), containing more than 15 percent by weight of phosphorous), 2853.90.50.00 (of other metals or nonmetals), 2853.90.90.10 (gallium arsenide wafers, undoped) and 2853.90.90.90 (other). The general (MFN) duty differs by line: 2.6% on 2853.90.10.00, free on 2853.90.50.00, 2.8% on 2853.90.90.10 and 2.8% on 2853.90.90.90.

Source: https://border.bot/countries/united-states/hs-codes/285390
Last updated: 9 October 2026

[Countries](https://border.bot/countries) / [United States](https://border.bot/countries/united-states) / [Chapter 28](https://border.bot/countries/united-states/hs-codes/28) / [2853.90](https://border.bot/countries/united-states/hs-codes/285390)

## Key facts

- HS subheading: [2853.90](https://border.bot/hs-codes/285390)
- National lines: 4
- Tariff: [United States](https://border.bot/countries/united-states)
- Chapter: 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes

## United States lines under 2853.90

The United States tariff splits HS 2853.90 (phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals) into 4 national lines: 2853.90.10.00 (of copper (phosphor copper), containing more than 15 percent by weight of phosphorous), 2853.90.50.00 (of other metals or nonmetals), 2853.90.90.10 (gallium arsenide wafers, undoped) and 2853.90.90.90 (other).

The general (MFN) duty differs by line: 2.6% on 2853.90.10.00, free on 2853.90.50.00, 2.8% on 2853.90.90.10 and 2.8% on 2853.90.90.90.

- [2853.90.10.00](https://border.bot/countries/united-states/hs-codes/2853901000) Other, Phosphides, whether or not chemically defined, excluding ferrophosphorous, Of copper (phosphor copper), containing more than 15 percent by weight of phosphorous. Duty (MFN): 2.6%
- [2853.90.50.00](https://border.bot/countries/united-states/hs-codes/2853905000) Other, Phosphides, whether or not chemically defined, excluding ferrophosphorous, Of other metals or nonmetals. Duty (MFN): free
- [2853.90.90.10](https://border.bot/countries/united-states/hs-codes/2853909010) Other, Other, Gallium arsenide wafers, undoped. Duty (MFN): 2.8%
- [2853.90.90.90](https://border.bot/countries/united-states/hs-codes/2853909090) Other, Other, Other. Duty (MFN): 2.8%

## In other countries

No other national tariff on border.bot has live lines under 2853.90 yet.

- [The Harmonized System text for 2853.90](https://border.bot/hs-codes/285390)

- Previous subheading: [2853.10](https://border.bot/countries/united-states/hs-codes/285310) Phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals
- Next subheading: [2901.10](https://border.bot/countries/united-states/hs-codes/290110) Saturated

## Frequently asked questions

### How many national tariff lines does the United States tariff have under HS 2853.90?

The United States tariff splits HS 2853.90 (phosphides, whether or not chemically defined, excluding ferrophosphorous; other inorganic compounds (including distilled or conductivity water and water of similar purity); liquid air (whether or not rare gases have been removed); compressed air; amalgams, other than amalgams of precious metals) into 4 national lines: 2853.90.10.00 (of copper (phosphor copper), containing more than 15 percent by weight of phosphorous), 2853.90.50.00 (of other metals or nonmetals), 2853.90.90.10 (gallium arsenide wafers, undoped) and 2853.90.90.90 (other).

### What is the duty on HS 2853.90 in the United States?

The general (MFN) duty differs by line: 2.6% on 2853.90.10.00, free on 2853.90.50.00, 2.8% on 2853.90.90.10 and 2.8% on 2853.90.90.90.

## 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/285390.json