# HS code 2827.31: Other chlorides, of magnesium

> HS code 2827.31 covers other chlorides, of magnesium. It sits in heading 28.27 (chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). Other goods of heading 28.27 are classified under 2827.10 (ammonium chloride), 2827.20 (calcium chloride), 2827.32 (other chlorides, of aluminium), 2827.35 (other chlorides, of nickel) or 6 others. National tariff lines under 2827.31 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/282731
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 28](https://border.bot/hs-codes/28) / [28.27](https://border.bot/hs-codes/2827) / [2827.31](https://border.bot/hs-codes/282731)

## Key facts

- HS code: 2827.31
- Covers: Other chlorides, of magnesium
- Heading: [28.27: Chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides](https://border.bot/hs-codes/2827)
- Chapter: [28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes](https://border.bot/hs-codes/28)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/282731)

## What this code covers

HS code 2827.31 covers other chlorides, of magnesium.

The legal text of the subheading is “Other chlorides: Of magnesium”, read under “Other chlorides”, in HS2022.

## What it doesn’t cover

Other goods of heading 28.27 are classified under 2827.10 (ammonium chloride), 2827.20 (calcium chloride), 2827.32 (other chlorides, of aluminium), 2827.35 (other chlorides, of nickel) or 6 others.

- [2827.10](https://border.bot/hs-codes/282710) Ammonium chloride
- [2827.20](https://border.bot/hs-codes/282720) Calcium chloride
- [2827.32](https://border.bot/hs-codes/282732) Other chlorides: Of aluminium
- [2827.35](https://border.bot/hs-codes/282735) Other chlorides: Of nickel
- [2827.39](https://border.bot/hs-codes/282739) Other chlorides: Other
- [2827.41](https://border.bot/hs-codes/282741) Chloride oxides and chloride hydroxides: Of copper
- [2827.49](https://border.bot/hs-codes/282749) Chloride oxides and chloride hydroxides: Other
- [2827.51](https://border.bot/hs-codes/282751) Bromides and bromide oxides: Bromides of sodium or of potassium
- [2827.59](https://border.bot/hs-codes/282759) Bromides and bromide oxides: Other
- [2827.60](https://border.bot/hs-codes/282760) Iodides and iodide oxides

## How it is structured

2827.31 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2827, are heading 28.27; the last two, 31, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- 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
- Within the heading: Other chlorides
- Subheading 2827.31: Of magnesium

## In other countries

National tariff lines under 2827.31 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/282731): 1 line, used by 1 other country

- Previous subheading: [2827.20](https://border.bot/hs-codes/282720) Calcium chloride
- Next subheading: [2827.32](https://border.bot/hs-codes/282732) Other chlorides: Of aluminium

## Frequently asked questions

### What does HS code 2827.31 cover?

HS code 2827.31 covers other chlorides, of magnesium.

### Which heading and chapter is HS code 2827.31 in?

HS code 2827.31 is in heading 28.27 (chlorides, chloride oxides and chloride hydroxides; bromides and bromide oxides; iodides and iodide oxides) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes).

### Where are goods of heading 28.27 classified when 2827.31 doesn’t fit?

Other goods of heading 28.27 are classified under 2827.10 (ammonium chloride), 2827.20 (calcium chloride), 2827.32 (other chlorides, of aluminium), 2827.35 (other chlorides, of nickel) or 6 others.

### Which countries’ tariffs list national lines under HS code 2827.31?

National tariff lines under 2827.31 are live on border.bot for the United States (1 line, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 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.

Machine-readable: https://border.bot/hs-codes/282731.json