# HS code 3823.12: Industrial monocarboxylic fatty acids; acid oils from refining, oleic acid

> HS code 3823.12 covers industrial monocarboxylic fatty acids; acid oils from refining, oleic acid. It sits in heading 38.23 (industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols) in chapter 38 (miscellaneous chemical products). Other goods of heading 38.23 are classified under 3823.11 (industrial monocarboxylic fatty acids; acid oils from refining, stearic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids), 3823.19 (industrial monocarboxylic fatty acids; acid oils from refining, other) or 3823.70 (industrial fatty alcohols). National tariff lines under 3823.12 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/382312
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 38](https://border.bot/hs-codes/38) / [38.23](https://border.bot/hs-codes/3823) / [3823.12](https://border.bot/hs-codes/382312)

## Key facts

- HS code: 3823.12
- Covers: Industrial monocarboxylic fatty acids; acid oils from refining, oleic acid
- Heading: [38.23: Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols](https://border.bot/hs-codes/3823)
- Chapter: [38: Miscellaneous chemical products](https://border.bot/hs-codes/38)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/382312)

## What this code covers

HS code 3823.12 covers industrial monocarboxylic fatty acids; acid oils from refining, oleic acid.

The legal text of the subheading is “Industrial monocarboxylic fatty acids; acid oils from refining: Oleic acid”, read under “Industrial monocarboxylic fatty acids; acid oils from refining”, in HS2022.

## What it doesn’t cover

Other goods of heading 38.23 are classified under 3823.11 (industrial monocarboxylic fatty acids; acid oils from refining, stearic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids), 3823.19 (industrial monocarboxylic fatty acids; acid oils from refining, other) or 3823.70 (industrial fatty alcohols).

- [3823.11](https://border.bot/hs-codes/382311) Industrial monocarboxylic fatty acids; acid oils from refining: Stearic acid
- [3823.13](https://border.bot/hs-codes/382313) Industrial monocarboxylic fatty acids; acid oils from refining: Tall oil fatty acids
- [3823.19](https://border.bot/hs-codes/382319) Industrial monocarboxylic fatty acids; acid oils from refining: Other
- [3823.70](https://border.bot/hs-codes/382370) Industrial fatty alcohols

## How it is structured

3823.12 is a six-digit subheading. Its first two digits, 38, are the chapter; the first four, 3823, are heading 38.23; the last two, 12, identify the subheading within the heading.

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

- Chapter 38: Miscellaneous chemical products
- Heading 38.23: Industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols
- Within the heading: Industrial monocarboxylic fatty acids; acid oils from refining
- Subheading 3823.12: Oleic acid

## In other countries

National tariff lines under 3823.12 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/382312): 1 line, used by 1 other country

- Previous subheading: [3823.11](https://border.bot/hs-codes/382311) Industrial monocarboxylic fatty acids; acid oils from refining: Stearic acid
- Next subheading: [3823.13](https://border.bot/hs-codes/382313) Industrial monocarboxylic fatty acids; acid oils from refining: Tall oil fatty acids

## Frequently asked questions

### What does HS code 3823.12 cover?

HS code 3823.12 covers industrial monocarboxylic fatty acids; acid oils from refining, oleic acid.

### Which heading and chapter is HS code 3823.12 in?

HS code 3823.12 is in heading 38.23 (industrial monocarboxylic fatty acids; acid oils from refining; industrial fatty alcohols) in chapter 38 (miscellaneous chemical products).

### Where are goods of heading 38.23 classified when 3823.12 doesn’t fit?

Other goods of heading 38.23 are classified under 3823.11 (industrial monocarboxylic fatty acids; acid oils from refining, stearic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids), 3823.19 (industrial monocarboxylic fatty acids; acid oils from refining, other) or 3823.70 (industrial fatty alcohols).

### Which countries’ tariffs list national lines under HS code 3823.12?

National tariff lines under 3823.12 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/382312.json