聚醚抗氧剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 381290 | 0.0% | CN | US | Official Doc |
| 391190 | 0.0% | CN | US | Official Doc |
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AI Analysis
🧪 Polyether Antioxidant (Chemical Additives for Plastics)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
📌 I. Product Definition & Classification: Do You Really Understand “Polyether Antioxidant”?
Polyether antioxidants are specialized chemical additives primarily used to prevent the degradation of plastics and polymers during processing and service life. In international trade, they are classified based on their primary function rather than their chemical structure alone.
Key Distinction:
- As an Additive (Primary Function): If the product is specifically formulated or marketed to act as an antioxidant, stabilizer, or other additive for plastics, it falls under Chapter 38 (Miscellaneous Chemical Products).
- As a Polymer (Fallback): If the product is a raw synthetic polymer without specific functional additives mentioned or classified otherwise, it might fall under Chapter 39 (Plastics and Articles Thereof). However, given the specific description “Polyether Antioxidant,” the additive classification is dominant.
⚠️ Critical Classification Point:
- Primary function = Antioxidant/Stabilizer for plastics → 3812.90
- Fallback (if no specific antioxidant function proven) → 3911.90
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Tax Status |
|---|---|---|---|
3812.90 |
Chemical products of a kind used as antioxidants, stabilizers, or other additives for plastics | Primary Classification. Specifically for additives like polyether antioxidants used to prevent polymer degradation. | ❌ Failed to retrieve tax information (Error) |
3911.90 |
Other synthetic polymers in primary forms, not elsewhere specified | Fallback Classification. Applies if the product is classified as a polyether polymer itself, lacking specific additive function proof. | ❌ Failed to retrieve tax information (Error) |
🔍 Key Reminder:
- The term “Polyether Antioxidant” strongly implies an additive function, making 3812.90 the most accurate classification.
- Misclassifying as a raw polymer (3911.90) may lead to customs disputes if the antioxidant property is not declared or proven.
💰 III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Additions)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: 2025 November 10 onwards (including subsequent imports)
🎯 1. 3812.90 —— Chemical Products Used as Antioxidants/Stabilizers for Plastics
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% (ad valorem) |
| USITC Surcharge | +25% (under USITC Footnote 9903.88.01) |
| IEEPA Surcharge | +10% (for China/Hong Kong products, effective from 2025 November 10) |
| Total Tariff Rate | 40.3% |
| Tax Calculation | CIF Value × 40.3% |
| De Minimis Eligibility | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:3812.90 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- “USITC Surcharge 25%” is based on Section 301 of the US Trade Act;
- “IEEPA 10%” is the additional tariff under the International Emergency Economic Powers Act for Chinese goods;
- Total 40.3%, a high tariff rate. Must be factored into cost calculations!
🎯 2. 3911.90 —— Other Synthetic Polymers in Primary Forms
| Item | Content |
|---|---|
| Base Tariff Rate | 5.7% (ad valorem) |
| USITC Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Total Tariff Rate | 40.7% |
| Tax Calculation | CIF × 40.7% |
| De Minimis Eligibility | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3911.90 → FOOTNOTE:9903.88.01 |
📌 Note:
- Similar to the above, this classification also incurs high tariffs;
- Even if classified as a polyether polymer, the surcharges remain the same.
🛠️ IV. Customs Clearance Practical Advice (Real-World Pitfall Avoidance Guide)
✅ 1. Required Documentation List (Mandatory)
| Document | Required | Explanation |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Include chemical composition, CAS number, function (antioxidant), and application (plastics) |
| ✅ Safety Data Sheet (SDS) | ✔️ | Proves chemical nature and safety handling requirements |
| ✅ Product Photos (Labeling) | ✔️ | Clear image of packaging, brand, model, and functional claims |
| ✅ Third-Party Test Report | ✔️ | COA (Certificate of Analysis), ISO, REACH, etc. |
| ✅ Commercial Invoice | ✔️ | Clearly state “Polyether Antioxidant for Plastics Additive” |
| ✅ Certificate of Origin (CO) | ✔️ | If not from China, may apply for preferential rates |
| ✅ Packing List | ✔️ | Detail net/gross weight and packaging type |
✅ 2. Declaration Tips (Key Principles)
🔥 “Function First, Additive Classify, Avoid Polymer Trap!”
| Scenario | Correct Declaration Method | Wrong Practice |
|---|---|---|
| Primary function = Antioxidant | 3812.90 |
Misclassify as polymer → 40.7% |
| No specific function declared | 3911.90 |
Claim additive function without proof → Audit risk |
| Mixed shipment (additive + polymer) | Declare separately | Combine → Misclassification |
✅ 3. Special Cases Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Antioxidant | Provide customer order + formulation details to prove specific function |
| Antioxidant Blend | Declare based on primary function; if multi-functional, declare as additive |
| For Medical Plastics | If for medical use, provide additional certification (FDA, CE) |
| For Automotive Plastics | No special tariff reduction, but ensure compliance with IATF 16949 standards |
🌍 V. Global Market Customs Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 United States | 3812.90 |
40.3% (China origin) | None specific | High surcharge |
| 🇨🇳 China | 3812.90 |
5.3% | None | No additional surcharges |
| 🇪🇺 European Union | 3812.90 |
6.5% | REACH, CLP | No surcharges |
| 🇦🇺 Australia | 3812.90 |
5.0% | AICIS | No surcharges |
| 🇯🇵 Japan | 3812.90 |
5.5% | JIS | No surcharges |
📌 Conclusion:
- The US has the highest total tariff due to surcharges;
- Other markets have stable, lower tariffs;
- US clearance cost is extremely high; consider supply chain adjustments or pre- ruling applications.
📌 VI. Common Errors & Pitfall Avoidance (Lessons Learned)
❌ Error 1: Declaring “Polyether Antioxidant” as “Polymer” to avoid higher tariff
👉 Consequence: Customs audits may reclassify to 3812.90 + penalties!
❌ Error 2: Failing to declare antioxidant function
👉 Consequence: Risk of misclassification → Delay or return!
❌ Error 3: Incomplete documentation (missing SDS or COA)
👉 Consequence: Customs may reject entry → Storage fees and delays!
❌ Error 4: Using vague terms like “Chemical Additive” without specifying function
👉 Consequence: Unclear classification → Disputes!
✅ Correct Approach:
“Polyether Antioxidant, CAS No. XXXXX, Used as Stabilizer for Polyethylene Plastics, Model XYZ, ISO Certified”
🎯 VII. Conclusion: Professional Declaration Saves Time and Money!
🎯 Remember the Mantra:
🔹 “Function First, Additive Classify! Polymer Trap Avoided! Tax Saved!”
🔹 “HS Code Determines Tax, Difference of 1% Means Thousands Saved!”
📌 Tips:
If your product is originating from Vietnam, Mexico, Thailand, or Malaysia, you may apply for IEEPA Exemption, reducing tariffs to 0%~5%;
Suggest applying for an Advance Ruling before shipment to avoid clearance risks.
📣 Immediate Action:
📞 Contact a professional customs broker + Provide product images + Apply for HS Code Advance Ruling
🚀 Ensure your Polyether Antioxidant clears customs smoothly, exports efficiently, and maximizes profits!
✨ Professional Customs Clearance Starts with Accurate Classification!
💼 Every Cent of Your Cost Deserves Precise Calculation!
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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) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — 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 — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — 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.