Portugal HS Code

HS Code 381231: Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics : Antioxidising preparations and other compound stabilisers for rubber or plastics : Mixtures of oligomers of 2,2,4trimethyl1,2dihydroquinoline (TMQ) in Portugal

Q: Is HS code 381231 the same across all countries?

Yes — up to the 6-digit level, HS code 381231 is the same in every WCO member country. Beyond 6 digits, each country extends the code for national tariff and statistical use. Portugal extends it under CN / TARIC.

Q: What system does Portugal use to classify HS code 381231?

Portugal classifies products under the Combined Nomenclature / TARIC (CN / TARIC; locally Nomenclatura Combinada), which extends HS codes to 10 digits. The first 6 digits align with the WCO Harmonized System, and the rest cover national tariff and statistical needs.

Q: Where can I officially look up HS code 381231 in Portugal?

The official source is https://www.portaldasfinancas.gov.pt/. For faster cross-country lookups, TradeInt's HS Code Tool consolidates classifications across all major countries in one place.

What is HS Code 381231 in Portugal

Under Portugal's Combined Nomenclature / TARIC (Nomenclatura Combinada), HS Code 381231 is the WCO Harmonized System subheading for Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics : Antioxidising preparations and other compound stabilisers for rubber or plastics : Mixtures of oligomers of 2,2,4trimethyl1,2dihydroquinoline (TMQ). This is the most detailed internationally standardized level; Portugal extends classifications to 10 digits under its national tariff system. 381231 belongs to Section VI: Products of the chemical or allied industries, Chapter 38: Miscellaneous chemical products, Heading 3812: Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics.

Explore more 2026 Latest Portugal import export trade data and shipment records for HS Code TMQ Rubber Stabilisers on TradeInt global trade data platform

Classification Path of HS Code 381231 in Portugal

Section VI

Chapters (28-38) Products of the chemical or allied industries

Chapter 38

Miscellaneous chemical products

HS Code 3812

Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics

HS Code 381231

Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics : Antioxidising preparations and other compound stabilisers for rubber or plastics : Mixtures of oligomers of 2,2,4trimethyl1,2dihydroquinoline (TMQ)

HS Code 3812310000

"Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline ""TMQ"""

Portugal Tariff Classification: Combined Nomenclature / TARIC (CN / TARIC)

In Portugal, HS 381231 is classified under the Combined Nomenclature / TARIC (Nomenclatura Combinada) — a 10-digit national extension of the WCO 6-digit Harmonized System.

Tariff schedule Combined Nomenclature / TARIC (CN / TARIC)

Local name Nomenclatura Combinada

Digits 10

Official source https://www.portaldasfinancas.gov.pt/

You know what 381231 means. Now see 2026 latest real trade activity for TMQ Rubber Stabilisers in Portugal.

Buyers, suppliers, origin and destination countries, shipment dates, and quantities direct from customs records.

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Top Trading Product of HS Code 3812

Top Portugal import Product Under HS Code 3812

1 381239: Antioxidising preparations and other compound stabilisers for rubber or plastics : Other $31.0M 2 381220: Compound plasticisers for rubber or plastics $12.2M 3 381210: Prepared rubber accelerators $6.6M

Figures shown for 2025.

For more 2026 recent data, search for Portugal import trade records

Top Portugal export Product Under HS Code 3812

1 381239: Antioxidising preparations and other compound stabilisers for rubber or plastics : Other $2.0M 2 381210: Prepared rubber accelerators $1.1M 3 381220: Compound plasticisers for rubber or plastics $74.0K

Figures shown for 2025.

For more 2026 recent data, search for Portugal export trade records

Related HS Code to Portugal TMQ Rubber Stabilisers (381231)

HS Code 3812310000

"Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline ""TMQ"""

Artificial graphite; colloidal or semicolloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures : Artificial graphite

HS Code 380120

Artificial graphite; colloidal or semicolloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures : Colloidal or semicolloidal graphite

HS Code 380130

Artificial graphite; colloidal or semicolloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures : Carbonaceous pastes for electrodes and similar pastes for furnace linings

HS Code 380190

Artificial graphite; colloidal or semicolloidal graphite; preparations based on graphite or other carbon in the form of pastes, blocks, plates or other semimanufactures : Other

HS Code 380210

Activated carbon; activated natural mineral products; animal black, including spent animal black : Activated carbon

HS Code 380290

Activated carbon; activated natural mineral products; animal black, including spent animal black : Other

Frequently Asked Questions

What is HS code 381231 in Portugal?

HS code 381231 covers Prepared rubber accelerators; compound plasticisers for rubber or plastics, not elsewhere specified or included; antioxidising preparations and other compound stabilisers for rubber or plastics : Antioxidising preparations and other compound stabilisers for rubber or plastics : Mixtures of oligomers of 2,2,4trimethyl1,2dihydroquinoline (TMQ) in Portugal. It sits in Chapter 38 (Miscellaneous chemical products), Heading 3812 of the Harmonized System, and is classified under CN / TARIC.

Is HS code 381231 the same across all countries?

What system does Portugal use to classify HS code 381231?

Where can I officially look up HS code 381231 in Portugal?