Dimethyl Phosphate Polyether
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 3907210000 | 41.5% | CN | US | 官方文档 |
| 3907290000 | 41.5% | CN | US | 官方文档 |
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AI分析
🧪 Dimethyl Phosphate Polyether (Bis(polyoxyethylene) Methylphosphonate)
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 I. Product Definition & Classification: What is "Dimethyl Phosphate Polyether"?
Dimethyl Phosphate Polyether, chemically identified in the provided data as Bis(polyoxyethylene) Methylphosphonate, belongs to the broader category of Polyethers. In international trade, it is classified under Chapter 39 (Plastics and Articles Thereof), specifically as a Primary Form of an "Other Polyether."
This substance is typically used as an intermediate chemical, flame retardant, or plasticizer in polymer manufacturing. It is not a finished plastic product but a raw material in liquid or powdered primary form.
⚠️ Critical Classification Point:
- Is it a "Specialty Polyether" (like Bisphenol A polycarbonate)?
- NO. Unless it is explicitly listed as a polycarbonate, alkyd, or polyester, it falls under the generic "Other Polyethers" bucket.
- Specific Derivative: The data specifies Bis(polyoxyethylene) Methylphosphonate. This is a highly specific chemical derivative.
- Differentiation:
- If the chemical structure matches Bis(polyoxyethylene) Methylphosphonate exactly → HS 3907.21.00.00
- If it is a generic polyether resin not fitting the specific phosphonate definition → HS 3907.29.00.00
📦 II. HS Code Classification Details (2026 Latest Tariff Authority Comparison)
| HS Code | Product Description | Applicable Scenario | Specific Chemical Identity |
|---|---|---|---|
3907.21.00.00 |
Other polyethers: Bis(polyoxyethylene) Methylphosphonate | Specific phosphonate-based polyethers used in advanced polymer synthesis or flame-retardant applications. | ✅ Exact Match for the specified chemical name in data. |
3907.29.00.00 |
Other polyethers: Other | Generic polyethers, PEG, PPG, or other polyether resins not specifically identified as Bis(polyoxyethylene) Methylphosphonate. | ❌ Generic (Fallback if specific identity is not confirmed). |
🔍 Key Reminder:
- The term "Dimethyl Phosphate Polyether" in commercial invoices must be carefully matched to the chemical identity.
- If the product is indeed Bis(polyoxyethylene) Methylphosphonate, it MUST be declared under 3907.21.00.00 to avoid misclassification penalties.
- If the chemical composition is uncertain or differs, it defaults to 3907.29.00.00.
💰 III. 2026 Latest Tariff Rate Details (Including Additional Duties & Policy Surcharges)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Time: Based on current trade data (2025-2026 context)
🎯 1. 3907.21.00.00 —— Bis(polyoxyethylene) Methylphosphonate (Specific Polyether)
| Item | Content |
|---|---|
| Basic Tariff | 6.5% (ad valorem) |
| Section 301 Surcharge | +25.0% (Additional duty on Chinese goods) |
| Total Tax Rate | 31.5% |
| Tax Calculation | CIF Value × 31.5% |
| De Minimis Eligibility | ❌ Not Eligible (Section 301 goods are typically exempt from de minimis relief if thresholds are exceeded) |
| Legal Basis Path | USITC:3907.21.00.00 → Section 301: Footnote 9903.01.25 |
📌 Explanation:
- The 6.5% base rate applies to "Other polyethers" under subheading 3907.21.
- The 25% additional duty is a standard Section 301 tariff on specific Chinese-origin plastic materials.
- Total 31.5% is a significant cost driver. Importers must budget accordingly.
🎯 2. 3907.29.00.00 —— Other Polyethers (Generic)
| Item | Content |
|---|---|
| Basic Tariff | 0.0% |
| Section 301 Surcharge | 0.0% |
| Total Tax Rate | 0.0% |
| Tax Calculation | CIF Value × 0.0% |
| De Minimis Eligibility | ✅ Eligible (if value < $800) |
| Legal Basis Path | USITC:3907.29.00.00 → No Section 301 Footnote Applied |
📌 Explanation:
- Generic polyethers under 3907.29 enjoy zero duty and no surcharge.
- Strategic Implication: If the product can be legally classified under "Other" (i.e., it is not Bis(polyoxyethylene) Methylphosphonate), the tariff savings are massive (31.5% vs 0%).
- Warning: Misclassifying a specific chemical as "Other" to avoid duties is fraud. Ensure chemical documentation (COA) supports the classification.
🛠️ IV. Customs Clearance Practical Advice (Battle-Tested Pitfall Guide)
✅ 1. Documentation Checklist (Essential)
| Document | Required? | Explanation |
|---|---|---|
| ✅ Certificate of Analysis (COA) | ✔️ | CRITICAL. Must list exact chemical name (e.g., Bis(polyoxyethylene) Methylphosphonate) to support HS 3907.21.00.00. |
| ✅ Chemical Structure Diagram | ✔️ | Proves the molecular structure. Helps CBP verify if it is a "Polyether" vs. "Ester" or "Ether." |
| ✅ Commercial Invoice | ✔️ | Must state "Bis(polyoxyethylene) Methylphosphonate" or "Generic Polyether Resin" accurately. |
| ✅ Material Safety Data Sheet (MSDS) | ✔️ | For hazard classification (though 3907 is non-hazardous plastic resin, MSDS is often requested). |
| ✅ Proof of Origin (COO) | ✔️ | Required to apply Section 301 surcharges correctly. |
✅ 2. Declaration Strategy (Key Mantra)
🔥 “Chemical Name Matches HS, Specificity Saves or Costs You 31.5%!”
| Scenario | Correct Declaration | Risk if Wrong |
|---|---|---|
| Product is Bis(polyoxyethylene) Methylphosphonate | HS 3907.21.00.00 | If declared as 3907.29 → 25% Penalty + Back Duties |
| Product is Generic Polyether (e.g., PEG) | HS 3907.29.00.00 | If declared as 3907.21 → Overpayment of 31.5% |
| Uncertain Chemical Identity | Request Pre-Ruling | Misclassification leads to Seizure or Delay |
✅ 3. Special Case Handling
| Situation | Handling Advice |
|---|---|
| Mixture with Other Chemicals | If the product is a mixture containing the polyether, it may still fall under 3907 if the polyether is the essential character. Provide formulation details. |
| Importing for R&D | Even for R&D, duties apply. Use HS 3907.29.00.00 if eligible for 0% duty to reduce R&D costs. |
| Re-export from Free Trade Zone | Duties are deferred. Focus on accurate initial classification to avoid re-entry issues. |
🌍 V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Notes |
|---|---|---|---|
| 🇺🇸 United States | 3907.21.00.00 |
31.5% | High cost due to 25% Section 301. |
| 🇺🇸 United States | 3907.29.00.00 |
0.0% | Zero duty if generic. |
| 🇨🇳 China | 3907.21.00.00 |
6.5% | Base rate applies; no Section 301. |
| 🇪🇺 European Union | 3907.21.00 |
6.5% | No US-style surcharges, but verify local anti-dumping. |
| 🇯🇵 Japan | 3907.21.00 |
6.0% | Generally lower base rate than US. |
📌 Conclusion:
- The US market is significantly more expensive (31.5%) for this specific chemical compared to global averages.
- Cost Optimization: If your product is not strictly Bis(polyoxyethylene) Methylphosphonate, negotiate with suppliers to adjust chemical naming or composition to fit 3907.29.00.00 (0% duty), provided it is legally defensible.
📌 VI. Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring "Bis(polyoxyethylene) Methylphosphonate" as "Plastic Pellets" (Generic)
👉 Consequence: CBP may assess 25% penalty + 31.5% back duties for fraud.
❌ Error 2: Using "Dimethyl Phosphate" (an ester) instead of "Polyether"
👉 Consequence: Wrong chapter (Chapter 29 vs 39). 3907 is for polyethers; if it’s primarily an ester, it might be 3907.30 or 2934. Misclassification leads to complex audits.
❌ Error 3: Ignoring the "Methylphosphonate" part in the name
👉 Consequence: Assuming 0% duty when the specific chemical triggers 31.5%.
✅ Correct Practice:
"Bis(polyoxyethylene) Methylphosphonate, Primary Form, CAS No. [Insert CAS], HS 3907.21.00.00"
🎯 VII. Conclusion: Precision in Chemical Classification is Key
🎯 Remember the Mantra:
🔹 "Specific Name, Specific HS. Generic Name, Generic Duty."
🔹 "3907.21 = 31.5% (US). 3907.29 = 0% (US). Know Your Chemical!"
📌 Pro Tip:
- If you are importing Bis(polyoxyethylene) Methylphosphonate, consider applying for an HTS Exclusion under Section 301 if your product is on the exclusion list (check USTR website periodically).
- Pre-clearance: Submit a Binding Ruling Request to CBP with full chemical documentation to lock in the HS code and duty rate.
📣 Immediate Action:
📞 Consult with a customs broker + Provide CAS Number + Verify Section 301 Exclusions
🚀 Protect Your Margin: Get the HS Code Right the First Time!
✨ Professional Customs Clearance Starts with Accurate Classification!
💼 Your Cost Efficiency Depends on Chemical Precision!
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- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
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