# United States tariff line 2827.59.25.00: Of ammonium, of calcium or of zinc

> In the United States tariff, line 2827.59.25.00 covers bromides and bromide oxides, of ammonium, of calcium or of zinc. Goods under this line enter free of general (MFN) duty. It falls under HS subheading 2827.59 in heading 28.27 (chapter 28).

Source: https://border.bot/countries/united-states/hs-codes/2827592500
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) / [2827.59](https://border.bot/countries/united-states/hs-codes/282759) / [2827.59.25.00](https://border.bot/countries/united-states/hs-codes/2827592500)

## Key facts

- Tariff line: 2827.59.25.00
- Covers: Bromides and bromide oxides, of ammonium, of calcium or of zinc
- Duty (MFN): Free
- Additional duties: None recorded
- Restrictions: None recorded
- Tariff: [United States](https://border.bot/countries/united-states)
- HS subheading: [2827.59](https://border.bot/hs-codes/282759)

## What this line covers

In the United States tariff, line 2827.59.25.00 covers bromides and bromide oxides, of ammonium, of calcium or of zinc.

Its legal text is “Of ammonium, of calcium or of zinc”, read under “Bromides and bromide oxides” and “Other”.

## How it is structured

It falls under HS subheading 2827.59 in heading 28.27 (chapter 28). The first six digits are the Harmonized System code; the 4 digits after them are added by the United States tariff.

- Chapter 28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
- Heading 28.27: Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides
- Subheading 2827.59: Bromides and bromide oxides
- Within the subheading: Other
- Line 2827.59.25.00: Of ammonium, of calcium or of zinc

## Duty

Goods under this line enter free of general (MFN) duty.

## In other countries

No other national tariff on border.bot has live lines under 2827.59 yet.

- [The Harmonized System text for 2827.59](https://border.bot/hs-codes/282759)

## Other lines under 2827.59

- [2827.59.51.00](https://border.bot/countries/united-states/hs-codes/2827595100) Other

- Previous line: [2827.51.00.00](https://border.bot/countries/united-states/hs-codes/2827510000) Bromides of sodium or of potassium
- Next line: [2827.59.51.00](https://border.bot/countries/united-states/hs-codes/2827595100) Other

## Frequently asked questions

### What does tariff line 2827.59.25.00 cover in the United States tariff?

In the United States tariff, line 2827.59.25.00 covers bromides and bromide oxides, of ammonium, of calcium or of zinc.

### What is the general (MFN) duty on 2827.59.25.00 in the United States?

Goods under this line enter free of general (MFN) duty.

## 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/2827592500.json