Natural Polymer Antioxidants
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3812310000 | 41.5% | CN | US | Official Doc |
| 3812396000 | 41.5% | CN | US | Official Doc |
| 2907292500 | 40.5% | CN | US | Official Doc |
| 2907198000 | 40.5% | CN | US | Official Doc |
| 3824999397 | 40.0% | CN | US | Official Doc |
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π‘οΈ Natural Polymer Antioxidants (Synthetic/Hybrid Variants in Trade)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy π I. Product Definition & Classification: What Are "Polymer Antioxidants"?
In international trade, "Natural Polymer Antioxidants" (often referring to phenolic antioxidants used in plastics/rubber) are chemical additives used to prevent degradation of polymers caused by oxidation. Although the term "natural" is used in marketing, these chemicals are typically classified under Chapter 29 (Organic Chemicals) or Chapter 38 (Miscellaneous Chemical Products) based on their chemical structure and formulation.
Key Distinction: * Pure Chemical Entities (Phenols/Polyphenols): If the product is a pure organic compound (e.g., specific phenol derivatives), it falls under Chapter 29. * Preparations/Products: If the product is a mixture, dispersion, or specifically prepared for use as an antioxidant in plastics/rubber, it often falls under Chapter 38.
β οΈ Critical Classification Point:
- If it is a pure organic chemical (phenol-based) β 2907
- If it is a preparation for plastics/rubber β 3812 or 3824
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority Reference)
Based on the provided data, here are the specific HS Codes and their rationales:
| HS Code | Product Description | Chemical Nature | Primary Use |
|---|---|---|---|
| 3812.31.00.00 | Preparations for Preventing Oxidation of Rubber or Plastics | Chemical Preparation (Matched for Rubber/Plastic) | Antioxidant preparations specifically formulated for rubber or plastic industries. |
| 3812.39.60.00 | Other Polymer Antioxidants (Plastic/Rubber Related) | Chemical Preparation (Plastic/Rubber Chemicals) | Broad category for antioxidant preparations not specified elsewhere, linked to plastic/rubber applications. |
| 2907.29.25.00 | Organic Chemicals: Polyphenols/Polyalcohols | Pure Organic Compound (Polyphenol/Polyalcohol Type) | Pure phenolic antioxidants fitting the characteristics of polyphenols or polyalcohols. |
| 2907.19.80.00 | Organic Chemicals: Monophenols | Pure Organic Compound (Monophenol Type) | Phenolic derivatives fitting the characteristics of mono-phenolic substances. |
| 3824.99.93.97 | Other Prepared Chemicals (Non-Specific) | General Chemical Preparation | General chemical preparations not specifically listed elsewhere; "catch-all" for non-specific antioxidant chemicals. |
π Key Insight:
- Chapter 29 (2907) applies to pure organic chemicals (phenols).
- Chapter 38 (3812/3824) applies to prepared mixes or formulations used directly in polymer processing.
- Misclassification Risk: Declaring a pure phenol as a "preparation" (3812) or vice versa can lead to delays or penalties.
π° III. 2026 Latest Tariff Rate Breakdown (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US)
β Country of Origin: China (CN)
β Effective Date: 2025εΉ΄11ζ10ζ₯θ΅· (From Nov 10, 2025)
π― 1. 3812.31.00.00 & 3812.39.60.00 β Polymer Antioxidants (Preparations)
| Item | Detail |
|---|---|
| Base Tariff | 6.5% (Ad Valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10% |
| Total Effective Tax | 41.5% |
| Tax Calculation | CIF Value Γ 41.5% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | Base: 3812 β Section 301: +25% β Section 122: +10% |
π Explanation:
- Base 6.5%: Standard MFN tariff for antioxidant preparations.
- Section 301 (25%): Trump-era tariffs still active for many chemical preparations from China.
- Section 122 (10%): Additional surcharge under specific trade enforcement clauses.
- Total 41.5%: High cost impact; must be factored into pricing.
π― 2. 2907.29.25.00 & 2907.19.80.00 β Pure Phenolic Antioxidants (Organic Chemicals)
| Item | Detail |
|---|---|
| Base Tariff | 5.5% (Ad Valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10% |
| Total Effective Tax | 40.5% |
| Tax Calculation | CIF Value Γ 40.5% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | Base: 2907 β Section 301: +25% β Section 122: +10% |
π Explanation:
- Base 5.5%: Slightly lower base rate for pure organic chemicals compared to preparations.
- Total 40.5%: Still high due to the same surcharges.
- Cost Advantage: Saving 1.0% compared to Chapter 38 codes.
π― 3. 3824.99.93.97 β Other Prepared Chemicals (General)
| Item | Detail |
|---|---|
| Base Tariff | 5.0% (Ad Valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Tariff | +10% |
| Total Effective Tax | 40.0% |
| Tax Calculation | CIF Value Γ 40.0% |
| De Minimis Exemption | β Not Applicable |
| Legal Basis Path | Base: 3824 β Section 301: +25% β Section 122: +10% |
π Explanation:
- Base 5.0%: Lowest base rate among the options.
- Total 40.0%: Lowest total tariff in the dataset, but classification must be justified as "non-specific prepared chemical."
π οΈ IV. Customs Clearance Practical Advice (Avoid Pitfalls)
β 1. Required Documentation Checklist (All Must Be Provided)
| Document | Required? | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must detail chemical composition (pure vs. mixture), CAS numbers, and concentration. |
| β Certificate of Analysis (COA) | βοΈ | Proves purity (for 2907) or formulation (for 3812/3824). |
| β Product Photos (Label & Container) | βοΈ | Must show chemical name, hazard symbols, and manufacturer. |
| β Third-Party Lab Report | βοΈ | To confirm if it is a "monophenol," "polyphenol," or "preparation." |
| β Commercial Invoice | βοΈ | Must accurately describe the product (e.g., "Phenolic Antioxidant for Plastics"). |
| β Origin Certificate (CO) | βοΈ | If not China-origin, to avoid Section 301/122 surcharges. |
| β Packing List | βοΈ | Details net/gross weight and packaging type. |
β 2. Declaration Tips (Key Mantra)
π₯ "Pure Chemicals Go to 29, Preparations to 38; Accurate CAS Numbers Save Money!"
| Scenario | Correct HS Code | Incorrect Action |
|---|---|---|
| Pure Phenolic Compound (e.g., BHT, Irganox type pure) | 2907.19.80.00 or 2907.29.25.00 |
Misdeclare as "Preparation" (3812) β Pay 1% more unnecessarily |
| Mixture/Formulation for Rubber | 3812.31.00.00 |
Misdeclare as pure chemical β Customs rejection/audit |
| General Chemical Additive | 3824.99.93.97 |
Misdeclare as specific preparation β Classification error |
| Non-China Origin | Check for Exemptions | Declare as China Origin β Pay 41.5% instead of 0-6.5% |
β 3. Special Circumstances Handling
| Situation | Handling Advice |
|---|---|
| OEM Private Label | Provide end-user contract to justify "Preparation" classification if applicable. |
| Mixed Containers | Ensure all items are same HS Code; mixed shipments require separate invoices. |
| Chemical Hazardous Goods | Provide MSDS/SDS to confirm if it is classified as hazardous; affects shipping mode. |
| Origin Diversification | If sourced from Vietnam/Mexico, apply for IEEPA Exemption β Tax drops to ~5-6.5%! |
π V. Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Req. | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3812.31.00.00 / 2907.19.80.00 |
40.0% - 41.5% | None (Standard) | High tariffs due to Section 301 + 122. |
| π¨π³ China | 3812.31.00.00 / 2907.19.80.00 |
5.5% - 6.5% | None | No surcharges; import-friendly. |
| πͺπΊ EU | 2907.19.80 / 3812.31 |
5.3% - 6.5% | REACH Registration | REACH compliance is critical for chemical imports. |
| π¦πΊ Australia | 2907.19.80 |
5.0% | AICIS Registration | AICIS approval needed for industrial chemicals. |
| π―π΅ Japan | 2907.19.80 |
5.0% - 6.0% | JITAC Notification | Standard MFN rates apply; no major surcharges. |
π Conclusion:
- USA is the most expensive market due to 40-41.5% effective tariff.
- EU/Australia/Japan have stable, moderate tariffs (~5-6.5%).
- Supply Chain Strategy: Consider sourcing from non-China origins to avoid US surcharges.
π VI. Common Mistakes & Pitfalls (Lessons Learned)
β Mistake 1: Declaring a pure phenol as a preparation (3812)
π Consequence: Overpaying 1.0% in tariff unnecessarily.
π Fix: Use CAS number and purity data to justify Chapter 29.
β Mistake 2: Declaring a mixture as a pure chemical (2907)
π Consequence: Customs audit, delay, potential penalty for misclassification.
π Fix: Provide COA proving it is a formulated preparation for Chapter 38.
β Mistake 3: Ignoring Section 122 Tariff
π Consequence: Underestimating landed cost by 10%.
π Fix: Always include the 10% surcharge in budget calculations for US imports.
β Mistake 4: Not disclosing Origin clearly
π Consequence: Paying full Chinese tariff when goods are actually from Vietnam.
π Fix: Ensure Certificate of Origin matches the actual manufacturing location.
β Correct Approach:
"Phenolic Antioxidant, Pure, CAS No. XXXXX-XX-X, For Use in Polyethylene Production, Pure Chemical Substance"
π― VII. Conclusion: Precise Classification Saves Money!
π― Remember the Mantra:
πΉ "Pure is 29, Mixed is 38; Section 301 bites, Section 122 adds!"
πΉ "Tax is 41%, Origin is Key; Shift Supply Chain to Save Big!"
π Pro Tip:
If your polymer antioxidants are originally from Vietnam, Mexico, or Thailand, you can apply for IEEPA Exemption, reducing the tariff from 41.5% to ~5-6.5%.
Action: Consult a customs broker for Pre-Ruling (Advance Ruling) to ensure correct HS Code selection and avoid clearance delays.
π£ Take Action Now:
π Contact a professional customs broker + Provide CAS Numbers + Apply for Pre-Ruling
π Ensure your polymer antioxidants clear customs smoothly, save costs, and maximize profits!
β¨ Professional Clearance Starts with Accurate Classification!
πΌ Every cent saved in tariff is pure profit!
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About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.