# HS code 3823.19: Industrial monocarboxylic fatty acids; acid oils from refining > HS code 3823.19 covers industrial monocarboxylic fatty acids; acid oils from refining, other than those classified in 3823.11, 3823.12 and 3823.13. 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), 3823.12 (industrial monocarboxylic fatty acids; acid oils from refining, oleic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids) or 3823.70 (industrial fatty alcohols). National tariff lines under 3823.19 are live on border.bot for the United States (2 lines, also used by 1 other country). Source: https://border.bot/hs-codes/382319 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) / [3823.19](https://border.bot/hs-codes/382319) ## Key facts - HS code: 3823.19 - Covers: Industrial monocarboxylic fatty acids; acid oils from refining - 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 2 lines](https://border.bot/countries/united-states/hs-codes/382319) ## What this code covers HS code 3823.19 covers industrial monocarboxylic fatty acids; acid oils from refining, other than those classified in 3823.11, 3823.12 and 3823.13. The legal text of the subheading is “Industrial monocarboxylic fatty acids; acid oils from refining: Other”, 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), 3823.12 (industrial monocarboxylic fatty acids; acid oils from refining, oleic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids) or 3823.70 (industrial fatty alcohols). - [3823.11](https://border.bot/hs-codes/382311) Industrial monocarboxylic fatty acids; acid oils from refining: Stearic acid - [3823.12](https://border.bot/hs-codes/382312) Industrial monocarboxylic fatty acids; acid oils from refining: Oleic acid - [3823.13](https://border.bot/hs-codes/382313) Industrial monocarboxylic fatty acids; acid oils from refining: Tall oil fatty acids - [3823.70](https://border.bot/hs-codes/382370) Industrial fatty alcohols ## How it is structured 3823.19 is a six-digit subheading. Its first two digits, 38, are the chapter; the first four, 3823, are heading 38.23; the last two, 19, 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 3823.19: Other ## In other countries National tariff lines under 3823.19 are live on border.bot for the United States (2 lines, also used by 1 other country). - [United States](https://border.bot/countries/united-states/hs-codes/382319): 2 lines, used by 1 other country - Previous subheading: [3823.13](https://border.bot/hs-codes/382313) Industrial monocarboxylic fatty acids; acid oils from refining: Tall oil fatty acids - Next subheading: [3823.70](https://border.bot/hs-codes/382370) Industrial fatty alcohols ## Frequently asked questions ### What does HS code 3823.19 cover? HS code 3823.19 covers industrial monocarboxylic fatty acids; acid oils from refining, other than those classified in 3823.11, 3823.12 and 3823.13. ### Which heading and chapter is HS code 3823.19 in? HS code 3823.19 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 3823.19 doesn’t fit? Other goods of heading 38.23 are classified under 3823.11 (industrial monocarboxylic fatty acids; acid oils from refining, stearic acid), 3823.12 (industrial monocarboxylic fatty acids; acid oils from refining, oleic acid), 3823.13 (industrial monocarboxylic fatty acids; acid oils from refining, tall oil fatty acids) or 3823.70 (industrial fatty alcohols). ### Which countries’ tariffs list national lines under HS code 3823.19? National tariff lines under 3823.19 are live on border.bot for the United States (2 lines, 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/382319.json