HS Code 3812.31 : Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
MODULE 2: EXTRACTABLE ANSWER (AEO / SPEAKABLE)
EN (Official WCO)
FR (Pending)
ES (Pending)
The 6-digit Harmonized System (HS) code for anti-oxidizing preparations and other compound stabilizers for rubber or plastics, mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (tmq) is 3812.31. Under the 2026 Brazil (RFB / NCM), the representative MFN general duty rate is 12.6% [Receita Federal do Brasil (RFB / NCM)].
MODULE 3: SIGNATURE A: HS DECODE VISUAL HIERARCHY
Chapter 38
Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics
Heading 3812
Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics
Subheading .31
.31
Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
MODULE 4: SIGNATURE B: TARIFF MATRIX
Import Duty Rates by Destination
Brazil (Receita Federal do Brasil / NCM Tariff 2026)
3812.31.00.00
MODULE 5: BRAZIL IMPORT DUTY & COMPOUND TAX BREAKDOWN
MERCOSUR COMMON EXTERNAL TARIFF (CET) PREFERENTIAL ELIGIBILITY
Qualifying originating goods from Mercosur member states (Argentina, Uruguay, Paraguay) satisfying rules of origin enter Brazil under 0% preferential tariffs with a valid Certificate of Origin.
Notice: Brazilian customs clearance, NCM classification, import duties (II), federal taxes (IPI, PIS/COFINS), and state ICMS are governed by Receita Federal do Brasil (RFB) and Portal Único Siscomex. Always verify declarable 8-digit NCM codes with RFB or a licensed Brazilian despachante alfandegário prior to import.
TRACK THIS HS CODE
Get Real-Time Tariff & Trade Remedy Change Alerts for HS 3812.31
Receive an automated email notification whenever USITC or CBP publishes duty rate adjustments or customs notices for 3812.31.
MODULE 6: Mandatory Customs Entry Document Matrix
Rule-Derived Customs Entry Package Checklist
UNIVERSAL DOCUMENT
Commercial Invoice
Itemized description, currency, Incoterms, seller/buyer details, and country of origin.
UNIVERSAL DOCUMENT
Packing List & Bill of Lading
Gross/net weight, container/seal numbers, piece count, and transport B/L or Air Waybill.
AGENCY-CONDITIONAL (PGA)
FDA Prior Notice / USDA Phytosanitary Cert
Rule-derived from verified PGA flag: Mandatory prior notice filing and health certificate.
MODULE 7: Regulatory Compliance & Partner Government Agency (PGA) Flags
ACE PGA Message-Set Flags:
EPA (EP1): EPA Pesticide Notice of Arrival (NOA) Form 3540-1
Official ACE program code: ACE/PGA [FDA 21 CFR 1.276].
MODULE 8: Trade Remedies (Section 301, Section 232, AD/CVD)
China Section 301 Tariff Status
0% Additional Duty (Exempt)
Section 232 Steel/Aluminum Status
Exempt (Non-Metal Commodity)
EU CBAM Carbon Alert
Not in Scope
MODULE 9: Free Trade Agreements (FTA) & Rules of Origin (RoO)
| Agreement Code | Trade Agreement / Program | Preferential Rate | Rules of Origin (RoO) Requirement |
|---|---|---|---|
| P | United States-Mexico-Canada Agreement (USMCA) | Free | Must meet USMCA Regional Value Content (RVC) or tariff shift rules. |
| KR | U.S.-Korea Free Trade Agreement (KORUS) | Free | Direct shipment from South Korea with KORUS Certificate of Origin. |
| AU | U.S.-Australia Free Trade Agreement | Free | Wholly obtained or tariff shift rule under US-Australia FTA. |
| A / D | GSP / African Growth & Opportunity Act (AGOA) | Free | 35% local value-add requirement for beneficiary country origin. |
MODULE 10: Logistics, Freight & Transport Specifications
Standard 20ft Container
~28 CBM / 28,000 kg Payload
Standard 40ft High-Cube
~68 CBM / 28,600 kg Payload
Stowage Factor & Handling
Standard commercial packaging for Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)
MODULE 11: RFB Solução de Consulta (NCM Classification)
Legally binding tariff classification rulings issued by Receita Federal do Brasil (RFB) for HS 3812.31.
Query official RFB Solução de Consulta database:
Search Official RFB Portal for 3812.31 →RFB NCM 8-Digit Commodity Lines (3812.31)
National line-level (8/10-digit) detail for Brazil (RFB / NCM): coverage in progress.
Universal 6-digit WCO backbone applied rate: 12.6%. Confirm the full national commodity code at the official source (Receita Federal do Brasil (RFB / NCM)).
MODULE 12: Candidate Subheadings & Related Codes
| Related HS Code | Heading Category | Action |
|---|---|---|
| 3812.10 | Subheading under Heading 3812 | Compare Subheading 3812.10 → |
| 3812.20 | Subheading under Heading 3812 | Compare Subheading 3812.20 → |
| 3812.39 | Subheading under Heading 3812 | Compare Subheading 3812.39 → |
Official Primary Sources & Authority References
Receita Federal do Brasil (RFB / Siscomex) ↗
Official Brazilian 8-digit NCM tariff items and RFB MFN import duty (II) rates.
RFB Solução de Consulta (COSIT / NCM Classification) ↗
Receita Federal official binding tariff classification rulings database.
MODULE 14: Frequently Asked Questions (FAQ) & Operational Guide
What is the 6-digit WCO tariff classification and Brazil (RFB / NCM) general duty for Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)?
Under WCO Harmonized System 2022 and Brazil (RFB / NCM), Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) is classified under HS 3812.31 (Heading 3812, Chapter 38). The representative BR MFN general duty rate is 12.6%.
How is HS 3812.31 distinguished within Heading 3812 (Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics)?
Heading 3812 covers Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics. Subheading 3812.31 specifically isolates Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ). Importers must verify whether physical characteristics, processing state, or composition require alternative subheadings under Heading 3812.
What are the primary candidate subheadings related to HS 3812.31?
Related subheadings under Heading 3812 include 3812.10, 3812.20, 3812.39. Classification depends on processing stage, decaffeination, purity, or material form.
What mandatory commercial entry documents are required to import Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)?
Commercial Invoice (detailing Incoterms, currency, and origin), Packing List, Bill of Lading (or Air Waybill), CBP Form 7501 Entry Summary, and a continuous customs bond are required for formal entries.
Can goods under HS 3812.31 enter duty-free under USMCA or Free Trade Agreements?
Yes. Eligible goods originating in Mexico, Canada, South Korea, or Australia enter duty-free under preference SPI codes (P, KR, AU) provided they satisfy Regional Value Content (RVC) or tariff-shift rules with a valid Certificate of Origin.
What is the US formal entry threshold for shipments of Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)?
Commercial shipments of Anti-oxidizing preparations and other compound stabilizers for rubber or plastics, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) with a customs value exceeding $2,500 USD require formal customs entry (CBP Form 7501) and a continuous entry bond. Informal entry applies to lower values.
How can an importer obtain a binding CBP classification ruling for HS 3812.31?
Importers may submit an e-Ruling request under 19 CFR Part 177 to CBP National Commodity Specialist Division (NCSD) to obtain a legally binding tariff classification ruling prior to importation.
Does Brazil assess a single import VAT on HS 3812.31?
No. Brazil does not assess a single VAT; imports incur a compound tax stack: II (Import Duty, shown as headline MFN rate) + IPI (federal excise) + PIS/COFINS-Importação + ICMS (state tax ~17%–18%).
What is Brazil's de minimis threshold for express parcel imports?
Under the Remessa Conforme program, compliant e-commerce shipments valued up to US$50 enter free of II (Import Duty), though ICMS state tax still applies.
Which agency regulates customs entry and tariff classification in Brazil?
Customs declarations, NCM 8-digit tariff items, and binding Solução de Consulta rulings are administered by Receita Federal do Brasil (RFB) and Portal Único Siscomex under the Mercosur Common External Tariff (CET).
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