HS code 3812.31: Anti-oxidising preparations and other compound stabilisers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
Last updated
Key facts
- HS code
- 3812.31
- Covers
- Anti-oxidising preparations and other compound stabilisers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
- Edition
- HS2022
- Duty rates
- Set by each country’s tariff
Summary
HS code 3812.31 covers anti-oxidising preparations and other compound stabilisers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ). It sits in heading 38.12 (prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; anti-oxidising preparations and other compound stabilisers for rubber or plastics) in chapter 38 (miscellaneous chemical products). Other goods of heading 38.12 are classified under 3812.10 (prepared rubber accelerators), 3812.20 (compound plasticisers for rubber or plastics) and 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics, other).
What this code covers
HS code 3812.31 covers anti-oxidising preparations and other compound stabilisers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ).
The legal text of the subheading is “Anti-oxidising preparations and other compound stabilisers for rubber or plastics: Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)”, read under “Anti-oxidising preparations and other compound stabilisers for rubber or plastics”, in HS2022.
What it doesn’t cover
Other goods of heading 38.12 are classified under 3812.10 (prepared rubber accelerators), 3812.20 (compound plasticisers for rubber or plastics) and 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics, other).
How it is structured
3812.31 is a six-digit subheading. Its first two digits, 38, are the chapter; the first four, 3812, are heading 38.12; the last two, 31, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Chapter 38
- Miscellaneous chemical products
- Within the heading
- Anti-oxidising preparations and other compound stabilisers for rubber or plastics
- Subheading 3812.31
- Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
In other countries
No national tariff lines under 3812.31 are live on border.bot yet. Tariffs built on the Harmonized System (HS2022) use 3812.31 at six digits and add their own digits after it.
Frequently asked questions
What does HS code 3812.31 cover?
HS code 3812.31 covers anti-oxidising preparations and other compound stabilisers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ).
Which heading and chapter is HS code 3812.31 in?
HS code 3812.31 is in heading 38.12 (prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; anti-oxidising preparations and other compound stabilisers for rubber or plastics) in chapter 38 (miscellaneous chemical products).
Where are goods of heading 38.12 classified when 3812.31 doesn’t fit?
Other goods of heading 38.12 are classified under 3812.10 (prepared rubber accelerators), 3812.20 (compound plasticisers for rubber or plastics) and 3812.39 (anti-oxidising preparations and other compound stabilisers for rubber or plastics, other).
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.