HS code · 6-digit subheading
HS Code 3812.39 – Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, other than mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
HS code 3812.39 is the 6-digit subheading for anti-oxidising preparations and other compound stabilisers, for rubber or plastics, other than mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ). It is used for hindered amine light stabilizers (HALS), UV absorbers, phosphite antioxidants, phenolic antioxidants and thioester antioxidants.
What HS 3812.39 covers
This broad category encompasses a wide array of anti-oxidising preparations and compound stabilisers for rubber or plastics, excluding the specific TMQ oligomers covered by 381231. These additives are crucial for protecting polymers from degradation caused by heat, light, oxygen, and other environmental factors, thereby preserving their mechanical properties, color, and overall lifespan. They are indispensable in virtually every sector that uses plastics and rubber, including packaging, automotive, construction, electronics, and consumer goods. Importers and exporters include major chemical producers, specialized additive manufacturers, and distributors serving a diverse range of industries. Key considerations involve selecting the appropriate stabilizer system for the specific polymer (e.g., PVC, PE, PP, ABS), processing conditions, and end-use application requirements. The market is driven by continuous innovation in performance, cost-effectiveness, and compliance with evolving environmental and health regulations, particularly regarding heavy metals and certain organic compounds.
- Covers
- Hindered amine light stabilizers (HALS)
- UV absorbers
- Phosphite antioxidants
- Phenolic antioxidants
- Thioester antioxidants
- Metal deactivators
- Hydrotalcite stabilizers
- Calcium-zinc stabilizers
- Examples
- Irganox 1010
- Tinuvin 770
- Weston 618
- Songnox 1076
- Doverphos S-9228
Codes often confused with 3812.39
Common mistake. This code is often confused with 381231 if the specific TMQ oligomers are not correctly identified, or with primary forms of individual chemical compounds (e.g., 2933.99 for specific heterocyclic compounds) if they are not prepared mixtures for stabilization.
Top exporters and importers of HS code 381239, 2025
In 2025, the largest exporter of HS code 381239 in UN Comtrade data was China, with 19% of world exports; the largest importer in UN Comtrade data was the United States, with 8.7% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $598M 19% of world exports
- 2 Germany $420M 13% of world exports
- 3 United States $296M 9.3% of world exports
World total: $3.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $316M 8.7% of world imports
- 2 Germany $252M 7.0% of world imports
- 3 China $239M 6.6% of world imports
World total: $3.6B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM codes for 3812.39 5
Brazil splits HS 3812.39 into 5 NCM codes, Mercosur's 8-digit tariff lines.
- 3812.39.1 For rubberPara borracha Group
- 3812.39.11 N-substituted p-phenylenediamines for rubberQue contenham derivados N-substituídos de p-fenilenodiamina
- 3812.39.12 Phosphite antioxidants for rubberQue contenham fosfitos de alquila, de arila ou de alquil-arila
- 3812.39.19 Other rubber antioxidants and stabilisersOutros
- 3812.39.2 For plasticsPara plástico Group
- 3812.39.21 N-substituted p-phenylenediamines for plasticsQue contenham derivados N-substituídos de p-fenilenodiamina
- 3812.39.29 Other plastics antioxidants and stabilisersOutros
All Brazil NCM codes in heading 38.12 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3812.39
What is HS code 381239?
HS code 381239 is a 6-digit subheading in the Harmonized System that covers: Anti-oxidising preparations and other compound stabilisers; for rubber or plastics, other than mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ). This broad category encompasses a wide array of anti-oxidising preparations and compound stabilisers for rubber or plastics, excluding the specific TMQ oligomers covered by 381231. These additives are crucial for protecting polymers from degradation caused by heat, light, oxygen, and other environmental factors, thereby preserving their mechanical properties, color, and overall lifespan. They are indispensable in virtually every sector that uses plastics and rubber, including packaging, automotive, construction, electronics, and consumer goods. Importers and exporters include major chemical producers, specialized additive manufacturers, and distributors serving a diverse range of industries. Key considerations involve selecting the appropriate stabilizer system for the specific polymer (e.g., PVC, PE, PP, ABS), processing conditions, and end-use application requirements. The market is driven by continuous innovation in performance, cost-effectiveness, and compliance with evolving environmental and health regulations, particularly regarding heavy metals and certain organic compounds.
What products fall under HS code 381239?
Hindered amine light stabilizers (HALS), UV absorbers, Phosphite antioxidants, Phenolic antioxidants, Thioester antioxidants, Metal deactivators, Hydrotalcite stabilizers, Calcium-zinc stabilizers
What are common misclassifications for HS code 381239?
This code is often confused with 381231 if the specific TMQ oligomers are not correctly identified, or with primary forms of individual chemical compounds (e.g., 2933.99 for specific heterocyclic compounds) if they are not prepared mixtures for stabilization.
Which countries are the top exporters of goods under HS code 381239?
In 2025, the top exporters of HS code 381239 in UN Comtrade data were China ($598M, 19% of world exports), Germany ($420M) and the United States ($296M). World exports came to about $3.2B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of goods under HS code 381239?
In 2025, the top importers of HS code 381239 in UN Comtrade data were the United States ($316M, 8.7% of world imports), Germany ($252M) and China ($239M). World imports came to about $3.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 381239 structured?
HS code 381239 is a 6-digit subheading under the Harmonized System. The first 2 digits (38) identify the chapter, digits 3-4 (12) identify the heading, and digits 5-6 (39) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 381239?
Brazil splits HS code 381239 into 5 NCM codes: 3812.39.11 (N-substituted p-phenylenediamines for rubber), 3812.39.12 (Phosphite antioxidants for rubber), 3812.39.19 (Other rubber antioxidants and stabilisers), 3812.39.21 (N-substituted p-phenylenediamines for plastics), 3812.39.29 (Other plastics antioxidants and stabilisers). The first 6 digits of each match the HS code.