Polyolefin Stabilizer
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3909505000 | 41.3% | CN | US | Official Doc |
| 3812396000 | 41.5% | CN | US | Official Doc |
| 3909501000 | 35.0% | CN | US | Official Doc |
| 3812393000 | 35.0% | CN | US | Official Doc |
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π§ͺ Polyolefin Stabilizer: HS Code Classification & Customs Clearance Guide (US Market)
π HS Code Reference & Customs Strategy | 2026 Tariff Structure | Professional Compliance Guide
π δΈγProduct Definition & Classification: What is a "Polyolefin Stabilizer"?
Polyolefin Stabilizers are chemical additives used to protect polyolefin plastics (such as Polyethylene/PE and Polypropylene/PP) from degradation caused by heat, light, and oxidation during processing and service life.
In international trade, these products are often classified based on two main interpretations: 1. As a Chemical Intermediate/Plastic Material: If the product is viewed primarily as a modified polyurethane or specific resin-based compound. 2. As a Composite Stabilizer/Preparation: If the product is viewed as a mixture (antioxidants, light stabilizers, etc.) designed specifically for the rubber/plastics industry.
β οΈ Key Classification Distinction:
- If the product is identified strictly as a Polyurethane-based compound or raw material β It falls under Chapter 39 (Plastics).
- If the product is identified as a mixture/additive (containing antioxidants/stabilizers) for plastics/rubber β It falls under Chapter 38 (Miscellaneous Chemical Products).
π¦ δΊγHS Code Classification Details (Based on Provided Data)
The following HS Codes are derived from the provided dataset. Note that while "Polyolefin Stabilizer" is the input, the dataset specifically links it to Polyurethane (PU) or Composite Stabilizer categories.
| HS Code | Product Description | Matching Logic (Summary) | Total Tax Rate |
|---|---|---|---|
3909.50.50.00 |
Other Polymers of Epoxidized Polyglycidyl Esters; Polyacetals, Other Polyethers and Their Derivatives; Polyurethanes | Material Match: The product name explicitly contains the material keyword "Polyurethane" (θζ°¨ι ―), fitting the classification for PU products without conflicting morphology or use cases. | 41.3% |
3812.39.60.00 |
Preparations for Improving the Heating of Lubricants or Preventing Their Oxidation; Anti-Oxidants and Other Composite Stabilizers for Rubber or Plastics | Material & Use: Polyurethane belongs to the plastic/synthetic resin category. The stabilizer fits the use case of "Anti-oxidants and other composite stabilizers." Since "ref" falls under "Other" categories with no material conflict, it is deemed compliant. | 41.5% |
3909.50.10.00 |
Polyurethanes, in Primary Forms | Material Match: Matches the material (Polyurethane). Although the form is not explicit, common sense infers it is a chemical additive related to the PU industry chain, with no material conflict in the PU category. | 35.0% |
3812.39.30.00 |
Preparations for Improving the Heating of Lubricants or Preventing Their Oxidation; Anti-Oxidants and Other Composite Stabilizers for Rubber or Plastics | Usage & Material: The material (Polyurethane) and use (Stabilizer) match the definition of composite stabilizers containing PU compounds. The form belongs to the chemical additive category. | 35.0% |
π Critical Note:
- The dataset highlights a tax rate differential between Chapter 39 (Plastics) and Chapter 38 (Chemical Preparations).
- Chapter 39 (3909.50.xx): Lower base tariff (0% or 6.3%) but different additional duties apply.
- Chapter 38 (3812.39.xx): Higher base tariff (6.5%) but similar additional duties.
- Best Option for Cost:3909.50.10.00or3812.39.30.00both result in 35.0% total tax, which is lower than the 41.3%-41.5% options.
π° δΈγ2026 Latest Tariff Rate Breakdown (Including Additional Duties)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 (and subsequent imports)
π― 1. 3909.50.50.00 & 3812.39.60.00 ββ High Tax Tier (41.3% - 41.5%)
| Item | Content |
|---|---|
| Base Tariff | 6.3% (for 3909.50.50.00) / 6.5% (for 3812.39.60.00) |
| Section 301 Duty (USITC) | +25.0% |
| Section 122 Duty (IEEPA) | +10.0% |
| Total Tax Rate | 41.3% (for 3909.50.50.00) 41.5% (for 3812.39.60.00) |
| Tax Calculation | CIF Value Γ Total Rate |
| De Minimis Exemption | β Not Eligible (deny_de_minimis) |
| Legal Basis | USITC:3909.50.50.00 + IEEPA:9903.01.25 + USITC:Footnote |
π Explanation:
- The 25% is the standard Section 301 tariff for many chemical/plastic products from China.
- The 10% is the additional Section 122 tariff (IEEPA) targeting specific Chinese imports.
- These rates are cumulative, leading to a high total cost.
π― 2. 3909.50.10.00 & 3812.39.30.00 ββ Optimized Tax Tier (35.0%)
| Item | Content |
|---|---|
| Base Tariff | 0.0% (ad valorem) |
| Section 301 Duty (USITC) | +25.0% |
| Section 122 Duty (IEEPA) | +10.0% |
| Total Tax Rate | 35.0% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible |
| Legal Basis | USITC:3909.50.10.00 / USITC:3812.39.30.00 + IEEPA:9903.01.24 |
π Advantage:
- By selecting the 0% base tariff codes, you save 6.3%-6.5% compared to the higher base rate options.
- This is the most cost-effective classification within the provided dataset.
π οΈ εγCustoms Clearance Practical Advice (Avoid Pitfalls)
β 1. Documentation Checklist (Essential)
| Document | Required | Explanation |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must clearly state chemical composition, CAS numbers, and function (stabilizer for polyolefin/PU). |
| β Safety Data Sheet (SDS) | βοΈ | Critical for chemical products. Must identify hazard classes and composition. |
| β Certificate of Origin (CO) | βοΈ | To confirm origin as China (subject to tariffs) or other eligible origins for potential exemptions. |
| β Commercial Invoice | βοΈ | Describe as "Polyolefin Stabilizer Additive" or "Composite Chemical Stabilizer," not just "Chemical." |
| β Packing List | βοΈ | Specify net/gross weight carefully for accurate duty calculation. |
β 2. Declaration Tips (Key Strategy)
π₯ βClarify Composition, Avoid Misclassification!β
| Scenario | Correct Declaration | Risk of Error |
|---|---|---|
| Pure Polyurethane Additive | Declare as 3909.50.10.00 |
Misclassifying as 3812.39.xx may incur 6.5% higher base duty. |
| Mixed Stabilizer Formula | Declare as 3812.39.30.00 |
Misclassifying as 3909.50.50.00 may incur higher base duty. |
| Vague Description "Chemical" | β Do Not Use | High risk of audit, delay, or reclassification to highest duty rate. |
β 3. Special Considerations
| Situation | Advice |
|---|---|
| OEM/Custom Formula | Provide a detailed Ingredient Breakdown to justify the 0% base tariff classification if itβs a specific chemical form. |
| Mixed Shipment | If the shipment contains multiple HS codes, declare separately to avoid applying the highest duty rate to the entire batch. |
| Origin Marking | Ensure all packages are marked "Made in China" to comply with US Customs requirements for Section 301/122 duties. |
π δΊγGlobal Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3909.50.10.00 / 3812.39.30.00 |
35.0% (Total) | None Specific | High tariffs due to Section 301 & 122. |
| π¨π³ China | 3909.50.10.00 |
~5-13% | None | Lower duty, standard chemical import rules. |
| πͺπΊ EU | 3909.50.10.00 / 3812.39.30.00 |
0-6.5% | REACH Compliance | REACH registration is critical for chemicals in EU. |
| π¬π§ UK | 3909.50.10.00 |
0-6.5% | UK REACH | Post-Brexit UK REACH registration required. |
π Conclusion:
- The US market imposes the highest burden due to Section 301 (25%) and Section 122 (10%) tariffs.
- EU/UK markets require strict chemical compliance (REACH/UK REACH) but have lower tariff burdens.
- Optimization Strategy: For US imports, strive to classify under3909.50.10.00or3812.39.30.00to minimize the 35% total duty rate.
π ε γCommon Mistakes & Pitfalls (Lessons Learned)
β Mistake 1: Declaring as "Plastic Raw Material" without specifying itβs a Stabilizer/Additive.
π Consequence: Customs may reclassify to a higher duty rate or demand additional chemical data.
β Mistake 2: Ignoring the Section 122 (10%) tariff.
π Consequence: Unexpected tax bill at clearance, as Section 122 applies to all Chinese-origin imports in many chemical categories.
β Mistake 3: Using vague terms like "Chemical Mixture" on the Invoice.
π Consequence: Delayed clearance, possible inspection, and risk of penalty.
β Correct Practice:
"Polyolefin Stabilizer, Composite Chemical Preparation, CAS No. XXXXX-XX-X, Contains Antioxidants, for Use in PE/PP Processing, Made in China."
π― δΈγConclusion: Professional Declaration, Cost Optimization
π― Remember the Key Rule:
πΉ "0% Base is King: Aim for
3909.50.10.00or3812.39.30.00to hit 35% Total Duty."
πΉ "301 + 122 = 35% Minimum for China Origin; Donβt Pay the Extra 6.5% Base Tariff if Unnecessary."
πΉ "Accurate Description Saves Time and Money."
π Pro Tip:
If your product is sourced from Vietnam, Mexico, or Thailand, you may be eligible for IEEPA exemptions or lower Section 301 rates, significantly reducing the total duty.
We recommend applying for a Customs Ruling in advance to confirm the exact HS Code for your specific formulation.
π£ Immediate Action:
π Contact a licensed customs broker
π Provide detailed chemical composition & SDS
π Ensure smooth clearance, optimize costs, and maximize your supply chain efficiency!
β¨ Precision Classification Starts Here!
πΌ Every percentage point matters in international trade!
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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.