# HS code 2810.00: Oxides of boron; boric acids

> HS code 2810.00 covers oxides of boron; boric acids. It sits in heading 28.10 (oxides of boron; boric acids) in chapter 28 (inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes). It is the only subheading of heading 28.10, so every good of the heading is classified here.

Source: https://staging.border.bot/hs-codes/281000
Last updated: 13 October 2026

[HS codes](https://staging.border.bot/hs-codes) / [Chapter 28](https://staging.border.bot/hs-codes/28) / [28.10](https://staging.border.bot/hs-codes/2810) / [2810.00](https://staging.border.bot/hs-codes/281000)

## Key facts

- HS code: 2810.00
- Covers: Oxides of boron; boric acids
- Heading: [28.10: Oxides of boron; boric acids](https://staging.border.bot/hs-codes/2810)
- Chapter: [28: Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes](https://staging.border.bot/hs-codes/28)
- Edition: HS2022
- Duty rates: [Set by each country’s tariff](https://staging.border.bot/countries)

## What this code covers

HS code 2810.00 covers oxides of boron; boric acids.

The legal text of the subheading is “Oxides of boron; boric acids”, in HS2022.

## What it doesn’t cover

It is the only subheading of heading 28.10, so every good of the heading is classified here.

## How it is structured

2810.00 is a six-digit subheading. Its first two digits, 28, are the chapter; the first four, 2810, are heading 28.10; the last two, 00, 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 28.10: Oxides of boron; boric acids
- Subheading 2810.00: Oxides of boron; boric acids

## In other countries

No national tariff lines under 2810.00 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 2810.00 at six digits and add their own digits after it.

- Previous subheading: [2809.20](https://staging.border.bot/hs-codes/280920) Phosphoric acid and polyphosphoric acids
- Next subheading: [2811.11](https://staging.border.bot/hs-codes/281111) Other inorganic acids: Hydrogen fluoride (hydrofluoric acid)

## Frequently asked questions

### What does HS code 2810.00 cover?

HS code 2810.00 covers oxides of boron; boric acids.

### Which heading and chapter is HS code 2810.00 in?

HS code 2810.00 is in heading 28.10 (oxides of boron; boric acids) 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 28.10 classified when 2810.00 doesn’t fit?

2810.00 is the only subheading of heading 28.10, so every good of the heading is classified there.

## Sources and updates

The Harmonized System legal text comes from border.bot release 1 (edition HS 2022), imported from a file, and has been live since 13 October 2026.

This page was last updated on 13 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://staging.border.bot/hs-codes/281000.json