松香酯改性剂
CN → US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 3806300000 | 41.5% | CN | US | Official Doc |
| 3806200000 | 38.7% | CN | US | Official Doc |
| 3506915000 | 37.1% | CN | US | Official Doc |
| 3506990000 | 37.1% | CN | US | Official Doc |
| 3911100000 | 41.1% | CN | US | Official Doc |
AI Analysis
🌲 Rosin Ester Modifiers (Resin Modifiers for Adhesives)
🌐 HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Clearance Strategy
📌 Part I: Product Definition & Classification: Do You Really Understand "Rosin Ester Modifiers"?
Rosin ester modifiers are chemical derivatives of rosin (colophony), produced by reacting rosin acids with alcohols, polyols, or phenols. They are widely used in the adhesive, sealant, printing ink, and coating industries to modify viscosity, improve tack, and enhance thermal stability.
In international trade, these products are often misclassified because they sit at the intersection of chemical products (Chapter 38) and adhesive/resin products (Chapter 35 & 39). The correct classification depends heavily on the chemical structure, state of matter, and primary function.
⚠️ Key Distinction Point:
- If the product is primarily a modified rosin ester (chemical derivative of rosin acid) → Classify under Chapter 38 (Miscellaneous Chemical Products).
- If the product is a chemically modified natural resin specifically formulated as an adhesive → Classify under Chapter 35 (Albuminoidal Substances; Glues).
- If the product is an alkylated rosin or similar petroleum-based resin derivative → Classify under Chapter 39 (Plastics and Articles Thereof).
📦 Part II: HS Code Classification Details (2026 Latest Tariff Authority Comparison)
Based on the provided data, here are the five potential HS codes for "Rosin Ester Modifiers" and why they apply:
| HS Code | Product Description | Applicability & Reason for Classification |
|---|---|---|
3806.30.00.00 |
Modified Rosin Esters | Most Direct Fit. Rosin esters are defined as derivatives of rosin acids. This code explicitly covers "rosin and rosin salts" and their derivatives, including esters formed by modification. The summary states: "Modified rosin esters belong to rosin acid derivatives, morphology conforms to ester glue definition." |
3806.20.00.00 |
Rosin Esters (General) | Alternative for Unmodified/Simple Esters. If the product is a standard rosin ester without significant further chemical modification to alter its core identity from "rosin salt/resinate," it falls here. Summary: "Rosin esters belong to rosin and its derivatives, conforming to characteristics of rosin salts, resinates, or their derivatives." |
3506.91.50.00 |
Adhesives Based on Polymer/Rubber | Function-Based Classification. If the rosin ester is heavily modified and specifically formulated as a "modified natural resin adhesive" that meets the legal definition of an adhesive based on polymers or rubber. Summary: "Modified product of natural resin via chemical modification, conforms to adhesive attributes based on polymers or rubber." |
3506.99.00.00 |
Prepared Adhesives (Other) | Catch-All for Prepared Glues. If the rosin ester is a "prepared glue" (chemically compounded/mixed) but doesn't fit the specific "polymer/rubber" definition of 3506.91, it goes here. Summary: "Chemically compounded resin product, conforms to chemical composition characteristics of prepared adhesives." |
3911.10.00.00 |
Petroleum Resins & Derivatives | Least Likely/Specific Case. Only applies if the "rosin ester" is actually a petroleum resin derivative or alkylated rosin that is chemically classified as a "plastic/resin" rather than a chemical derivative of rosin. Summary: "Belongs to petroleum resins and related resin derivatives, conforms to characteristics of petroleum resins and other unlisted original resin products." |
🔍 Critical Reminder:
- Chapter 38 (3806.xx) is generally preferred for pure chemical derivatives of rosin (esters, glycerides, etc.).
- Chapter 35 (3506.xx) is used when the product is formulated/mixed to function primarily as an adhesive.
- Chapter 39 (3911.xx) is rarely used for standard rosin esters unless they are petroleum-based or heavily alkylated plastics.
- Misclassification Risk: Declaring a modified rosin ester as3506.99(adhesive) instead of3806.30(chemical derivative) can lead to different duty assessments and regulatory scrutiny.
💰 Part III: 2026 Latest Tariff Rate Details (Including Surcharge & Policy Surcharges)
✅ Applicable Country: United States (US)
✅ Country of Origin: China (CN)
✅ Effective Date: 2025/2026 (Current Trade War Era)
🎯 1. 3806.30.00.00 —— Modified Rosin Esters (Most Common)
| Item | Detail |
|---|---|
| Base Duty Rate | 6.5% (ad valorem) |
| Section 301 Surcharge | +25.0% (Due to Trade War List) |
| Section 122 Surcharge | +10.0% (Specific to certain chemical/resin products under 122 rules) |
| Total Tax Rate | 41.5% |
| Tax Calculation | CIF Value × 41.5% |
| De Minimis Exemption | ❌ Not Eligible (Deny de minimis for Section 301/122 items) |
| Legal Basis Path | USITC:3806.30.00.00 → Section 301: +25% → Section 122: +10% |
📌 Explanation:
- 6.5% Base: Standard Most-Favored-Nation (MFN) rate for modified rosin esters.
- 25% Section 301: Applies to most Chinese-origin chemicals and resins.
- 10% Section 122: Specific additional tariff applied to certain resin products.
- Total 41.5% is a very high tariff, significantly impacting profit margins.
🎯 2. 3806.20.00.00 —— Rosin Esters (General)
| Item | Detail |
|---|---|
| Base Duty Rate | 3.7% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Total Tax Rate | 38.7% |
| Tax Calculation | CIF Value × 38.7% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3806.20.00.00 → Section 301: +25% → Section 122: +10% |
📌 Note:
- 3.7% Base: Lower base rate for unmodified or simply processed rosin esters.
- Total 38.7%: Still extremely high due to the flat 35% surcharge (25% + 10%).
- Savings: Choosing3806.20over3806.30saves 2.8% on the total tax burden.
🎯 3. 3506.91.50.00 —— Adhesives Based on Polymer/Rubber
| Item | Detail |
|---|---|
| Base Duty Rate | 2.1% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value × 37.1% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3506.91.50.00 → Section 301: +25% → Section 122: +10% |
📌 Note:
- 2.1% Base: Low base rate for prepared adhesives.
- Total 37.1%: The lowest total tariff among all options.
- Risk: High scrutiny from CBP. You must prove the product is a "prepared adhesive based on polymer/rubber" and not just a chemical intermediate.
🎯 4. 3506.99.00.00 —— Other Prepared Adhesives
| Item | Detail |
|---|---|
| Base Duty Rate | 2.1% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Total Tax Rate | 37.1% |
| Tax Calculation | CIF Value × 37.1% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3506.99.00.00 → Section 301: +25% → Section 122: +10% |
📌 Note:
- Same rate as3506.91.50.00.
- Use this if the product does not meet the "polymer/rubber" definition but is still a prepared adhesive.
🎯 5. 3911.10.00.00 —— Petroleum Resins & Derivatives
| Item | Detail |
|---|---|
| Base Duty Rate | 6.1% (ad valorem) |
| Section 301 Surcharge | +25.0% |
| Section 122 Surcharge | +10.0% |
| Total Tax Rate | 41.1% |
| Tax Calculation | CIF Value × 41.1% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | USITC:3911.10.00.00 → Section 301: +25% → Section 122: +10% |
📌 Note:
- 41.1%: High tariff. Only use if the product is truly a petroleum-based resin derivative, not a natural rosin derivative. Misclassification here is risky.
🛠️ Part IV: Customs Clearance Practical Advice (Avoid Pitfalls)
✅ 1. Required Documentation Checklist (Essential)
| Document | Mandatory? | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Must include INCI name, CAS number, chemical structure, viscosity, melting point, and application. |
| ✅ Formula/Composition Breakdown | ✔️ | Crucial for determining if it's a "chemical derivative" (Ch 38) or "prepared adhesive" (Ch 35). Must show % of rosin acid vs. alcohols. |
| ✅ Product Photos (Label/Packaging) | ✔️ | Clear image of the label, including batch number and manufacturer. |
| ✅ Certificate of Analysis (COA) | ✔️ | Third-party lab report confirming chemical composition and purity. |
| ✅ Commercial Invoice | ✔️ | Must accurately describe the product (e.g., "Modified Rosin Ester, CAS 65996-77-4"). Avoid vague terms like "Adhesive Additive." |
| ✅ Bill of Lading/Air Waybill | ✔️ | Standard shipping documents. |
| ✅ Pre-Ruling Application (Optional but Recommended) | ✔️ | Apply for an Advance Ruling from CBP to confirm the correct HS Code. |
✅ 2. Declaration Strategy (Key Mnemonics)
🔥 "Chemical Structure Rules, Function Follows, Misclassify Pays the Price!"
| Scenario | Correct Declaration Approach | Wrong Approach |
|---|---|---|
| Pure Modified Rosin Ester (e.g., Glycerol Rosin Ester) | Use 3806.30.00.00 (41.5%) |
Declare as "Adhesive" (3506) → High audit risk, penalties |
| Simple Rosin Ester (No major modification) | Use 3806.20.00.00 (38.7%) |
Declare as "Resin" (3911) → Wrong chapter, 41.1% |
| Formulated Adhesive Paste (Rosin + Solvents + Fillers) | Use 3506.91.50.00 or 3506.99.00.00 (37.1%) |
Declare as "Chemical Raw Material" (3806) → Lower duty but risky if not truly adhesive |
| Petroleum-Based Resin (Not rosin-based) | Use 3911.10.00.00 (41.1%) |
Declare as "Rosin Ester" → Customs seizure |
✅ 3. Special Considerations
| Situation | Handling Advice |
|---|---|
| OEM/Custom Formulations | Provide the exact formula. CBP will analyze if the chemical modification changes the essential character. If it's still a rosin derivative, Ch 38 is safer. |
| "Rosin" vs. "Colophony" | Ensure the chemical name matches the HS Code definition. "Colophony" is often raw rosin, while "Rosin Ester" is modified. |
| Blended Products | If mixed with solvents or other resins, the product may become a "Prepared Adhesive" (Ch 35). Consult a customs broker to determine if the primary character is adhesive or chemical. |
| Section 122 Applicability | Verify if the specific product code is subject to the 10% Section 122 surcharge. Some chemical products are exempt. Check the latest CBP notes. |
🌍 Part V: Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (China Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 3806.30.00.00 |
41.5% | REACH (if sold in EU context, but US requires TSCA) | Highest tariff. Section 301 + 122 apply. |
| 🇨🇳 China | 3806.30.00.00 |
6.5% | GB Standards | No surcharge. Lower cost for domestic use. |
| 🇪🇺 EU | 3806.30.00.00 |
5.5% (approx.) | REACH, CLP | No Section 301. Lower duty, but strict REACH compliance needed. |
| 🇯🇵 Japan | 3806.30.00.00 |
6.4% (approx.) | JIS Standards | Moderate duty. No major surcharges. |
| 🇬🇧 UK | 3806.30.00.00 |
6.5% (approx.) | UKCA | Post-Brexit, tariffs similar to EU but no EU trade benefits. |
📌 Conclusion:
- USA is the most expensive market due to the 35% additional tariffs (25% + 10%).
- EU and Japan offer significantly lower duties, but require strict chemical safety compliance (REACH in EU).
- China has the lowest duty (6.5%) but no surcharges, making it the cheapest for domestic or regional use.
📌 Part VI: Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring "Modified Rosin Ester" as 3506.99 (Adhesive) to save 4.4% tax.
👉 Consequence: CBP audits the formula. If it's not a formulated adhesive but a chemical intermediate, you face penalties + back taxes.
❌ Error 2: Ignoring Section 122 surcharge.
👉 Consequence: Underpaying by 10%. CBP will issue a Post-Centry Summary Correction (PCS) and charge interest.
❌ Error 3: Vague description "Adhesive Additive" without CAS number.
👉 Consequence: Customs holds the shipment for 1-3 weeks while requesting more info, causing demurrage fees.
❌ Error 4: Misidentifying "Petroleum Resin" as "Rosin Ester."
👉 Consequence: If the product is petroleum-based but declared as rosin, it may be seized for misrepresentation of origin/nature.
✅ Correct Approach:
"Modified Glycerol Rosin Ester, CAS 65996-77-4, For Adhesive Industry, HS Code 3806.30.00.00"
🎯 Part VII: Conclusion: Professional Classification Saves Money!
🎯 Remember the Mantra:
🔹 "Structure first, function second. Chemical derivative (38) vs. Prepared Adhesive (35)."
🔹 "USA tariffs are brutal (41.5%). Plan early!"
🔹 "Vague declarations lead to delays. Be precise with CAS numbers!"
📌 Pro Tip:
If your supplier is from China, and you are importing to the USA, consider:
1. Applying for an Exclusion (if eligible, though rare for chemicals now).
2. Using a Foreign Trade Zone (FTZ) to defer duties.
3. Consulting a Customs Broker for an Advance Ruling to avoid surprises.
📣 Immediate Action:
📞 Contact your customs broker with the CAS number and formula breakdown.
🚀 Apply for an Advance Ruling before shipping.
💼 Accurate classification is your best defense against high tariffs!
✨ Professional Clearance Starts with Precise Classification!
💼 Every cent saved is profit earned!
Customer Reviews
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.